500.0 mL of 0.10 M hydrochloric acid and 0.10 M potassium hydroxide are mixed.

Question

How many grams of water are produced? How many mL of water are produced?

Answer 1

The eq is  HCl + KOH ---> KCl + H2O...which tells us that one mol of water is formed for each mol of acid or base.

Problem states that 500/1000 x 0.10 ( = 0.05) mols of each are used...so 0.05 mols H2O are formed.

0.05 mols x 18 (MW) = 0.90g = 0.90mL (density of water is 1.00 near RT)...within the significant figures given.

This is a simple problem, and you should learn to do these quickly...before you get to more complex ones  :-))...practice makes perfect, more or less, we are told.

Answer 2

on s'en branle