Multiple Choice
When 0.100 mole of BaCl_2 reacts completely with excess Na_2SO_4 according to the equation BaCl_2 + Na_2SO_4 → BaSO_4 + 2NaCl, how many moles of BaSO_4 are produced?
14
views
3. Chemical Reactions
Stoichiometry
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
According to the reaction Fe + CuSO4 → Cu + FeSO4, how many moles of CuSO4 are required to completely react with 2 moles of Fe?
A
1 mole
B
0.5 moles
C
2 moles
D
4 moles
Verified step by step guidance1
Write the balanced chemical equation for the reaction: \(\mathrm{Fe} + \mathrm{CuSO_4} \rightarrow \mathrm{Cu} + \mathrm{FeSO_4}\).
Identify the mole ratio between Fe and CuSO_4 from the balanced equation. Here, 1 mole of Fe reacts with 1 mole of CuSO_4.
Given that you have 2 moles of Fe, use the mole ratio to find the moles of CuSO_4 required: multiply 2 moles of Fe by the ratio \(\frac{1 \text{ mole CuSO}_4}{1 \text{ mole Fe}}\).
Calculate the moles of CuSO_4 needed to completely react with 2 moles of Fe based on the mole ratio.
Conclude that the number of moles of CuSO_4 required is equal to the number of moles of Fe, which is 2 moles.
Related Videos
Related Practice
