February 27, 2017

Homework Help: Chemistry help please!!!

Posted by john on Thursday, January 27, 2011 at 2:38pm.

Experimental Procedure, Part F. A 1.0- mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.01 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. A color change in the reaction mixture occured in 40 seconds.

a. Assuming 25 drops per milliliter, determine the initial molar concentration of IO3- after the mixing but before any reaction occurs (at time = 0).

b. At the same point in time, what is the molar concentration of H2SO3?

c. The rate of the reaction is measured by the disappearance of H2SO3. For the reaction mixture in this question, what is the reaction rate? Express the reaction rate with appropriate units.

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