Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

1. A 34.32 mL sample of O 2 gas was collected over water at 24 o C from the deco

ID: 815187 • Letter: 1

Question

1. A 34.32 mL sample of O2 gas was collected over water at 24 oC from the decomposition of hydrogen peroxide. The barometric pressure in the room that day was 746.32 torr.

A. Calculate the pressure of O2 gas in the system.

B. Calculate the moles of gas collected.

C. Calculate the moles of H2O2 initially present in the sample.

2. Hydrogen peroxide is sold commercially as containing a maximum of 3% H2O2 by volume. Assuming that the density of Hydrogen peroxide solution is 1 g/ml, calculate the moles of H2O2 that would be present in 3.6 mL of 3% H2O2 solution.

Explanation / Answer

V1 = 34.32 ml of O2

T= 24