Question

ASAP! A 11.9 g sample of an aqueous solution of hydrobromic acid contains an unknown amount of the acid.
If 25.1 mL of 0.593 M barium hydroxide are required to neutralize the hydrobromic acid, what is the percent by weight of hydrobromic acid in the mixture?

Answer 1

Determine the moles of HBr in the 11.9 g sample.

You can do this by determining the moles of OH produced by barium hydroxide, which are equal to the moles of \(H^+\) and equivalently, HBr.

From here, convert the moles to mass, then find the percentage of the sample this weighs.