Now, the base dissociation constant of the hypochlorite anions is calculated using the equation. So if you start with "0.
If x "M" of hypochlorite anions ionize, then you get x "M" of hypochlorous acid and x "M" of hydroxide anions.
If x "M" of hypochlorite anions ionize, then you are left with 0. Now, you didn't provide a value for the base dissociation constant, but I can tell you that it's small enough to allow you to use the approximation.
Since we've said that x "M" represents the equilibrium concentration of hydroxide anions, you will have. Now all you have to do is to use the value of the base dissociation constant given to you--or you can simply do a quick search for the base dissociation constant of the hypochlorite anion--and plug it into the equation to find the "pH" of the solution.
The answer should be rounded to two decimal places because you have two sig figs for the concentration of the solution. What is the "pH" of a "0. Chemistry Acids and Bases pH. Stefan V. Apr 3, Related questions How do you determine pH from pKa? How do pH values of acids and bases differ?
How do you calculate something on a pH scale? How do you calculate pH diprotic acid? How do you calculate pH from acid dissociation constant? How do you calculate pH of acid and base solution? Why is the pH scale ? Is pH a measure of the hydrogen ion concentration?
How does solubility affect pH?
How does pH relate to pKa in a titration? See all questions in pH. Impact of this question views around the world. You can reuse this answer Creative Commons License.Investigations have shown sodium hypochlorite to be an effective disinfectant having broad applications. Although a number of other disinfectants calcium hypochlorite, ozone, UV, solar disinfection and treatment processes filters, slow sand filtration have been investigated, sodium hypochlorite appears to offer the best mix of low cost, ease of use, safety, and effectiveness in areas where there is enough water to drink and water is not excessively turbid.
These characteristics are the reasons why most water treatment systems in the US and Europe have been using chlorine for disinfecting drinking water for nearly years. The other disinfection methods noted above also effectively disinfect water and are useful in a number of settings. A number of potential users of the SWS know that these tablets are used to disinfect water.
Unfortunately, we have also found that many people have different levels of knowledge regarding appropriate dosing instructions, which is a concern because the tablets vary significantly in strength.
In Haiti, a small saran wrap bag of approximately HTH pellets is widely available and inexpensive. However, the pellets vary in size, the quality of the pellets is unknown, and, depending on impurities in the manufacturing process, they can degrade quickly. In other countries, very high strength tablets may be sold which, when added to water for disinfection, leave a strong, unpleasant taste. For these reasons, hypochlorite solution is likely to be a better option.
First, it is important that the concentration of the SH solution produced is correct usually 0. A concentration that is too low requires too high a volume to adequately treat enough water to be practical. A concentration that is too high is difficult to accurately dose, raising the risk of too high a dose which is unpalatableor too low a dose which might not effectively disinfect the water.
Second, it is important that the pH level of the solution be at least This increases the shelf life of the solution. The hypochlorite dose will depend on the characteristics of the local water. Usually an amount in the range of 5 to 10 milliliters added to 20 liters of water is sufficient to inactivate the disease-causing organisms, but not leave an unpleasant taste. Once the size of the cap for your project has been determined, some simple experiments can be used to determine the appropriate dose.
To conduct the experiments, you will need locally available SH, source water in your area, and a kit that measures the amount of free and combined chlorine. Please contact healthywater cdc. Sodium hypochlorite is highly reactive and volatile. At normal pHsodium hypochlorite can degrade substantially within weeks.
This shelf life is not adequate for use in the SWS, which requires that the hypochlorite remain at a high enough concentration to inactivate disease-causing organisms. By raising the pH of the hypochlorite solution, you stabilize the solution.
The pH can be raised by the addition of sodium hydroxide, which is widely available. In order to determine the amount of sodium hydroxide to add to your sodium hypochlorite solution, you will need to complete trial-and-error testing. Add a known volume of sodium hydroxide to a known volume of sodium hypochlorite, and then measure the pH with a meter or kit. Because source water quality is different in each location, there is not one standard volume of sodium hydroxide to add to ensure pH is above You will have to start with a known volume perhaps 1 tablespoon in 1 gallon, or 5 ml in 1 liter and complete repeat trial-and-error testing.
The exact pH is not important in this context—you simply need to ensure that the pH level is above No, because when the sodium hypochlorite solution is added to water, the water decreases the pH and the sodium hypochlorite becomes more active. The chemistry behind this is: the pH scale is from 0 to Commercial Bleach is compared by the reaction of Cl2 with a base usually a strong one.
When you bleach something, the ClO- ion is used in an oxidation-reduction change of ionic charge reaction, and is reduced to Cl. The reducing agent being oxidized is the stain being acted on by the bleach.
Thus, we can easily find the concentration of OCl- in a solution by reacting a known mass of solution commonly halide ions, for this we will use an Iodine ion in an acidic solution. As the iodine is in excess, the reaction of OCl- goes to completion. Now, we must determine the amount of I2 formed by means of titration with Na2S2O3, sodium thiosulfate.
S2O3 2- thiosulfate ion is reducing the iodine I2 in order to form the polythionate tetrathionate ion S4O6 As the titration reaches the endpoint point where the reactions are stoichiometrically equalthe I2 concentration decreases as it is converted to the Iodine ion. This is marked by a change in color from a brown to a pale yellow amber color, and then finally to a colorless solution.
This may be difficult to determine when the colorless solution is reached, so usually the addition of a starch glucose joined together by glysodic bonds is done when the color is that of a light yellow as starch decomposes in the presence of an acid, and the loss of iodine as the attachment of I2 to the starch decomposes would be irreversible, it is imperative that this not be done until the color of the titration is that of a light amber.
The addition of this starch will yield a blue color. We can determine the amount of moles of thiosulfate required to titrate x moles of Sodium Thiosulfate. Then we can use our balanced chemical reaction to find moles of I2 produced, then from that moles of ClO- which would equal moles of NaClO. Usually, measuring small amounts causes greater error than measuring in large amounts. To alleviate this, we can dilute the commercial bleaching solution by adding more water.
We will dilute 10ml of commercial bleach into ml of total solution. Then, we will add ml distilled water, 25ml of the diluted bleach solution, 10ml of Potassium Iodide KI; source of Iodide ion and 4ml of 6M HCl hydrochloric acid.
When then titrate this to find the amount of ClO- ion is in the original concentration. Then, we add starch 1ml for the excess iodide to bind too after the titration goes from a brown to a light amber think light beer color. After we figure out the amount of S2O3 -2 concentrated, we can then figure out the mass of ClO- ion in the original solution.It means that 9.
Hence the volume of solution is calculated as. Hence the volume of solution is 0. The molar concentration can be calculated by calculating the number of moles of sodium hypochlorite NaClO. Given mass No. Questions are typically answered within 1 hour. Q: Q: 36 ouncew of beer is equivalent to how many standard drinks? Q: Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction: 8.
A: a Number of moles of reactants is calculated. Q: What will the concentrations be for a, b, and c? What is the pH of the solution? Electron with What is the volume of the solution? Q: What volume of0. A: The molarity of a solution is defined as the ratio of the number of moles of solute that are present Q: Combining 0.
A: Given Balanced chem A: Hello. Since you have posted multiple questions and not specified which question needs to be solved, A: Electron affinity:It is the energy released when an electron adds to the neutral gaseous atom F. A: For a given chemical species, the number of moles is defined as the ratio of its mass to molar mass Q: A sample of a compound is found to contain Q: A Q: A mixture of nitrogen and argon gas is compressed from a volume of Q: From the following data, AH Q: Could you draw all valid resonance structrues for these two?
I understand the rules for drawing resoMedically reviewed by Drugs. Last updated on Aug 25, Tell your doctor and pharmacist about all of your drugs prescription or OTC, natural products, vitamins and health problems. You must check to make sure that it is safe for you to take sodium hypochlorite with all of your drugs and health problems.
Do not start, stop, or change the dose of any drug without checking with your doctor. Use sodium hypochlorite as ordered by your doctor. Read all information given to you. Follow all instructions closely. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:. All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects. You may report side effects to the FDA at Sodium hypochlorite topical side effects in more detail. If you think there has been an overdose, call your poison control center or get medical care right away.
Be ready to tell or show what was taken, how much, and when it happened. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. Sodium hypochlorite topical reviews. The easiest way to lookup drug information, identify pills, check interactions and set up your own personal medication records. Available for Android and iOS devices.Why don't fictional characters say "goodbye" when they hang up a phone?
All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Hottest Questions. Previously Viewed. Unanswered Questions. Elements and Compounds. What is the molar mass of sodium hypochlorite? Wiki User To find a molar mass, add the molar weight frequently called the atomic mass of each element of the formula.
About Sodium Hypochlorite Bleach
The formula for sodium hypochlorite is NaOCl. Use a periodic table. You can also look up the molar mass of compounds in many reference books for example, the CRC Handbook of Chemistry and Physics.
You may be able to find a copy in your local or school library. If you have access to a computer you can search for the compound on WolframAlpha.Make concentrated sodium hypochlorite (bleach)
If we do a search for sodium hypochlorite, we can see that the molar mass is The molar mass of sodium is The molar mass of sodium chloride is 58, O Oxygen has a molar mass of Na Sodium has a molar mass of H Hydrogen has a molar mass of 1. Asked in Metal and Alloys What is larger sodium or potassium? Asked in Chemistry What is the molar mass of a hydrated sodium carbonate?
The molar mass of the hydrated sodium carbonate - Na2CO3. Figure the molar mass of sodium carbonate to the nearest gram? The molar mass of anhydrous sodium carbonate is g.How many grams Sodium Hypochlorite in 1 mol?
The answer is We assume you are converting between grams Sodium Hypochlorite and mole. You can view more details on each measurement unit: molecular weight of Sodium Hypochlorite or mol The molecular formula for Sodium Hypochlorite is NaClO. The SI base unit for amount of substance is the mole. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between grams Sodium Hypochlorite and mole. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from moles Sodium Hypochlorite to gramsor enter other units to convert below:. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight in atomic mass units of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.
If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom or group of atoms in the formula by the formula weight and multiplying by We use the most common isotopes.
This is how to calculate molar mass average molecular weightwhich is based on isotropically weighted averages. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.
A common request on this site is to convert grams to moles. To complete this calculation, you have to know what substance you are trying to convert. The reason is that the molar mass of the substance affects the conversion. This site explains how to find molar mass.
Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.
Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.
You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!