The pH range given in textbooks is typically 0 - 14. Concentrated acids and base

Question

   The pH range given in textbooks is typically 0 - 14. Concentrated acids and bases may fall outside this range. Calculate the pH of hydrochloric acid, if the solution is sold as 31 % by weight (31 g HCl / 100 g solution) with a density of 1.15 g/mL. Report your answer to 2 decimal places.    The pH range given in textbooks is typically 0 - 14. Concentrated acids and bases may fall outside this range. Calculate the pH of hydrochloric acid, if the solution is sold as 31 % by weight (31 g HCl / 100 g solution) with a density of 1.15 g/mL. Report your answer to 2 decimal places.    The pH range given in textbooks is typically 0 - 14. Concentrated acids and bases may fall outside this range. Calculate the pH of hydrochloric acid, if the solution is sold as 31 % by weight (31 g HCl / 100 g solution) with a density of 1.15 g/mL. Report your answer to 2 decimal places.

Explanation / Answer

31 x 1150 g/L / 100 = 356.5 g/L of HCl in this solution

concentration or molarity = 356.5 g/L / 36.461 g/mol =9.77 M

pH = - log 9.77 = - 0.99

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