Saturday
April 18, 2015

Homework Help: chemistry

Posted by angela on Wednesday, August 4, 2010 at 8:17pm.

A stock solution's hypochlorite activity was determined as follows: . -
2.00g of liquid sodium hypochlorite (NaOCl) was weighed into a flask and diluted with 50mL deionized water.10mL of 10% sulfuric acid and 10mL of 10% potasssium iodide were added, followed by titration with 0.1N sodium thiosulfate (Na2S2O3) until colorless.
% sodium hypochlorite
= (mL Na2S2O3)(0.1N)(0.03722)/2.00gNaOCl X 100

[The factor 0.03722 was derived by multiplying molecular weight of NaOCl (74.45g/mol) by 0.001 (mL to L conversion) and dividing by 2(mols of thiosulfate per hypochlorite).]

Please explain why we need to multiply by 0.1N? Thanks.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - You weigh out 196.07mg ferrous ammounium sulfate (FW 392.14) to ...
Chemistry Help Please - Titration of a Sample of Household bleaches: The ...
science(chem) - I'm making different concentrations of ethanol and I just wanted...
Chemistry - The activity of a stock isotope is 10,000 DPM/0.10mL. If 0.25 ml of ...
Chemistry - A solution of household bleach contains 5.25% sodium hypochlorite, ...
chemistry - A solution of household bleach contains 5.25% sodium hypochlorite, ...
Chemistry - A solution of household bleach contains 5.25% sodium hypochlorite, ...
organic chemistry - in a reaction with 9-fluorenol and sodium hypochlorite (with...
college chemistry - How do you calculate the pH when the following substances ...
college chemistry - How do you calculate the pH difference when the following ...

Members