Chemistry question, I’ve already started it but i don’t know how to come up with the final answer. please help, i have zero points left

The volume of the gas = 9.14 L

Given

Kb = 6.3 x 10⁻⁵

2.5 L solution

pOH= 2.5

Required

Volume of gas

Solution

pOH = 2.5

For weak base :

( 3.2 x 10⁻³)² = 6.3 x 10⁻⁵  x M

M = 0.163

mol = M x V

mol = 0.163 x 2.5 L

mol = 0.408

At STP(1 atm, 273 K) 1 mol = 22.4 L

so the volume = 0. 408 x 22.4 L = 9.14 L

answer is a

explanation:

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.