Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
Related questions
Question
using the given values for trial 1, how would you find the mass of pure liquid H2O2?
Transcribed Image Text:The process that occurs in this titration is a redox reaction that occurs in an acidic solution, via the balanced
equation shown below. You will need the coefficients from this reaction for your calculations below.
H₂SO4 (aq) + 2 KMnO4 (aq) + 5 H₂O2 (1)→ 5 O2 (g) + 2 MnSO4 (aq) + K2SO4 (aq) + 8 H₂O (1)
Calculation for Mass Percentage of pure liquid H₂O2 in store-bought H₂O2 solution:
Using the volume and molarity of KMnO4 used in the trial, calculate the mass of
pure liquid H₂O2 in grams present in the titration. You will need the coefficients
from the balanced reaction shown above.
= 9.91 mL
У кмпон
Trial 1
Calculations
84
Because the store-bought hydrogen peroxide solution is mostly water, the density of
the solution is assumed to be the same as water, 1.00 g/mL. Using your exact
volume of store-bought H₂O2 solution, determine the mass of store-bought H₂O2
solution. You do not need to show any work for this step.
Using the mass of pure liquid H₂O2 calculated and the mass of store-bought H₂O₂
solution, determine the mass percentage of pure H₂O2 in the solution.
A colebizo tapt o
KMnO
Mass of pure
liquid H₂O₂:
Mass of H₂O₂
solution:
Mass
Percentage of
H₂O₂:
Transcribed Image Text:DATA TABLE
Exact Volume of store-bought
H2O2 Solution Used
Initial Buret Reading of KMnO4
Final Buret Reading of KMnO4
Volume of KMnO4 Used
Molarity of KMnO4 Used
(class average from first titration)
1000er Tr
Trial 1
2.1
13.42 mb
23.32 mL
9.91 mL
0582M
ML
Trial 2
2.0 mL
23.32 ML
33.98 mL
10.66 mL
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