The active agent in many hair bleaches is hydrogen peroxide. The amount of H,O, in 14.6-g of hair bleach was determined by titration with a standard potassium permanganate solution: 2 MnO, (aq) + 5 H,O2(aq) + 6 H*(aq)→50½(g) + 2 Mn²*(aq) + 8 H,0(1) (a) For the titration, how many moles of MnO, were required if 46.1 mL of 0.154 M KMNO, 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 MnO, (b) How many moles of H,0, were present in the 14.6 g sample of bleach? Write your answer to the correct number of significant figures. mol H;O2

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Chapter4-Three Major Classes of Chemical Reactions A
Saved
15
Be sure to answer all parts.
The active agent in many hair bleaches is hydrogen peroxide. The amount of H,O, in 14.6-g of hair
bleach was determined by titration with a standard potassium permanganate solution:
Would
try ano
of this q
2 MnO, (aq) + 5 H,02(aq) + 6 H*(aq) → 5 O2(g) + 2 Mn²*(aq) + 8 H,0(1)
By doing
start from
and lose
(a) For the titration, how many moles of MnO were required if 46.1 mL of 0.154 M KMNO, was
needed to reach the end point? Write your answer to the correct number of significant figures. Enter
your answer in scientific notation.
associated
question.
10
mol MnO
Try an
(b) How many moles of H,0, were present in the 14.6 g sample of bleach? Write your answer to the
correct number of significant figures.
mol H2O2
Mc
Graw
Hill
15 of 30
< Prev
Next >
O Type here to search
Transcribed Image Text:8 https://ezto.mheducation.com/ext/map/index.html?_con=Dcon&external_browser%3D0&launch- Chapter4-Three Major Classes of Chemical Reactions A Saved 15 Be sure to answer all parts. The active agent in many hair bleaches is hydrogen peroxide. The amount of H,O, in 14.6-g of hair bleach was determined by titration with a standard potassium permanganate solution: Would try ano of this q 2 MnO, (aq) + 5 H,02(aq) + 6 H*(aq) → 5 O2(g) + 2 Mn²*(aq) + 8 H,0(1) By doing start from and lose (a) For the titration, how many moles of MnO were required if 46.1 mL of 0.154 M KMNO, was needed to reach the end point? Write your answer to the correct number of significant figures. Enter your answer in scientific notation. associated question. 10 mol MnO Try an (b) How many moles of H,0, were present in the 14.6 g sample of bleach? Write your answer to the correct number of significant figures. mol H2O2 Mc Graw Hill 15 of 30 < Prev Next > O Type here to search
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