What is the minimum number of moles of sodium borohydride required to fully reduce 0.55 grams of benzophenone? Enter only the number with two significant figures.

Question

Chemistry

Marco

17 August, 14:10

What is the minimum number of moles of sodium borohydride required to fully reduce 0.55 grams of benzophenone? Enter only the number with two significant figures.

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Answers (1)

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Leslie Marquez · Answer 1

see explanation below

Explanation:

In this case, is pretty easy. This is a reduction reaction to form the respective alcohol.

Now for each mole of benzophenone that it's present, reacts with 1 mole of Sodium borohydryde, so, all we need to do, is to calculate the moles of benzophenone presents and these, would be the same moles of NaBH4 so:

moles Benzophenone : m/MM

The molar mass of benzophenone reported is 182.22 g/mol so:

moles Benzophenone = 0.55/182.22 = 3.02x10⁻³ moles

so the moles of NaBH₄ = 3.02x10⁻³ moles