Question

NEED ASSISTANCE TO CHECK MY WORK

The goal for Experiment 1: Ideal Gas Law - Finding Percent H2O2 with Yeast is to find the percentage of hydrogen peroxide in the solution. To determine percentage, you need to first determine how many moles of hydrogen peroxide are present. Rearrange PV=nRT to solve for n, then plug in your known values for P, V, R, and T. Show your rearrangement of the ideal gas law equation from Experiment 1 to solve for n. Then plug in your P, V, R, and T values (using proper units) and solve. NOTE: All work must be shown.

Show your calculations from Experiment 1: Ideal Gas Law - Finding Percent H2O2 with Yeast for determining the theoretical number of moles of O2 if the hydrogen peroxide were a 100% solution. NOTE: All work must be shown.

Using the actual moles of O2 you determined from your experiment (n) and the theoretical moles of O2 you just calculated, show your calculations from Experiment 1: Ideal Gas Law - Finding Percent H2O2 with Yeast for determining the percent hydrogen peroxide in your experimental sample. NOTE: All work must be shown.

The bottle of hydrogen peroxide you used in Experiment 1: Ideal Gas Law - Finding Percent H2O2 is labeled as a 3% solution (the same as store-bought hydrogen peroxide). Do your experimental results support this (with consideration given to experimental error)? Show your calculations for your percent error of your results. NOTE: All work must be shown.

P= .998 atm

V= 50ml

R= (constant) 0.0821

T= 293 Kelvin

5ML of 3% H2O2 were used.

Answer 1

P = 0.998 atm ; V = 50 mL = 0.05 L ; R= (constant) 0.0821 Latm/molK ; T= 293 Kelvin

Now, PV = nRT

Here, = Actual moles of O₂

Now, Theoretical moles of O₂ = H₂O₂ used * H₂O₂ density *

= 5mL * 1.02g/mL * = 0.075 moles O₂

Now, % H₂O₂ =

= =Actual percent of H₂O₂

Given, Theoretical percent of H₂O₂ = 3%

Percent error = %