HCl gas is in a 1.21-L cylinder at 0.870 atm and 28.0° C. This gas is dissolved in 750.0 mL of water. Calculate the pH of this solution (assume no volume change).
A) 0.950
B) 2.52
C) 1.25
D) 1.37
E) none of these

Question

Quizplus · Accepted Answer

First, calculate the moles of HCl using PV = nRT. Then, find the concentration of HCl in the solution by dividing moles by the total volume in liters. Finally, calculate pH as -log[H⁺], which gives approximately 1.25.

HCl Gas Is in a 1