Be sure to answer all parts. The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O₂ in 14.1-g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO4 (aq) +5 H,O,(aq) +6 H*(aq) → 5 0,(g) + 2 Mn→+(aq) +8 H,O(D) (a) For the titration, how many moles of MnO4 were required if 37.9 mL of 0.189 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation. x 10 mol MnO4 (b) How many moles of H₂O₂ were present in the 14.1 g sample of bleach? Write your answer to the correct number of significant figures. mol H₂O₂
Be sure to answer all parts. The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O₂ in 14.1-g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO4 (aq) +5 H,O,(aq) +6 H*(aq) → 5 0,(g) + 2 Mn→+(aq) +8 H,O(D) (a) For the titration, how many moles of MnO4 were required if 37.9 mL of 0.189 M KMnO4 was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation. x 10 mol MnO4 (b) How many moles of H₂O₂ were present in the 14.1 g sample of bleach? Write your answer to the correct number of significant figures. mol H₂O₂
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.146QP
Related questions
Question
![Be sure to answer all parts.
The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O₂ in 14.1-g of hair
bleach was determined by titration with a standard potassium permanganate solution:
2 MnO4 (aq) +5 H,O,(aq) +6 H*(aq) → 5 0,(g) + 2 Mn→+(aq) +8 H,O(D)
(a) For the titration, how many moles of MnO4 were required if 37.9 mL of 0.189 M KMnO4 was
needed to reach the end point? Write your answer to the correct number of significant figures. Enter
your answer in scientific notation.
x 10 mol MnO4
(b) How many moles of H₂O₂ were present in the 14.1 g sample of bleach? Write your answer to the
correct number of significant figures.
mol H₂O₂](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F15c022aa-6711-4b29-ab7f-4e5d70ca82f7%2F5bb12907-6cbf-4abd-9f7c-e23b097439f4%2F164b3km_processed.png&w=3840&q=75)
Transcribed Image Text:Be sure to answer all parts.
The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O₂ in 14.1-g of hair
bleach was determined by titration with a standard potassium permanganate solution:
2 MnO4 (aq) +5 H,O,(aq) +6 H*(aq) → 5 0,(g) + 2 Mn→+(aq) +8 H,O(D)
(a) For the titration, how many moles of MnO4 were required if 37.9 mL of 0.189 M KMnO4 was
needed to reach the end point? Write your answer to the correct number of significant figures. Enter
your answer in scientific notation.
x 10 mol MnO4
(b) How many moles of H₂O₂ were present in the 14.1 g sample of bleach? Write your answer to the
correct number of significant figures.
mol H₂O₂
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