Answer to Question #113931 in General Chemistry for Jonathan

Question

7.) A 24.6 ml solution of unknown acid has 0.504 g/L of acid in solution. Calculate the molar mass of the solution, and use that to calculate the concentration and pH of the solution.

Answer 1

Solution.

$C = \frac{m}{M \times V} = \frac{\rho}{M}$

$M = \frac{\rho}{(\frac{V}{Vm})} = 458.18 \ g/mol$

$C = 0.0011 \ M$

$pH = -lg[H^+] = 2.96$

Answer:

M = 458.18 g/mol

C = 0.0011 M

pH = 2.96