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Topic: Stoichiometry  (Read 160 times)

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Offline RealRock3t

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Stoichiometry
« on: November 20, 2019, 07:50:51 PM »
Could anybody help with this question?

Bismuth oxide reacts with carbon to form bismuth metal

Bi2O3(s) + 3C(s)  :rarrow: 2 Bi(s) + 3CO(g)

When 50.7g Bi2O3 reacts with excess C,
a) How many moles of Bi2O3 react?
b)How many moles of Bi form?

Offline AWK

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Re: Stoichiometry
« Reply #1 on: November 21, 2019, 12:50:37 AM »
AWK

Offline Enthalpy

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Re: Stoichiometry
« Reply #2 on: November 21, 2019, 05:33:31 AM »
You must determine how many moles of Bi2O3 are in 50.7g, using the molar masses of Bi and O (or O2, but don't confuse them). Then, this balanced equation lets you count moles and answer b).

It doesn't matter to the answers here, but I expect Bi to be formed liquid or gaseous, not solid. More heat produced than for iron, which is produced liquid, and bismuth melts more easily.

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