Find [H+] and the pH of the following solutions.
(a) A 456-mL sample of a 12.0% (by mass) solution of HNO3 (d = 1.00 g/mL). What is the pH of 10.0 mL of the same sample?
(b) A solution made up of 1.0 g of HCl dissolved in enough water to make 1.28 L of solution. What is the pH of the solution? If the same mass of HCl is dissolved in enough water to make 128 mL of solution, what would the pH be?
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