Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

How many moles of KBrO₃ are required to prepare 0.0700 moles of Br₂ according to the reaction: KBrO₃ + 5KBr + 6HNO₃ → 6KNO₃ + 3Br₂ + 3H₂O
Options
A 0.210
B 0.0732
C 0.0704
D 0.0233
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

From the balanced equation, 1 mol KBrO₃ produces 3 mol Br₂. Moles KBrO₃ needed = 0.0700 mol Br₂ × (1 mol KBrO₃ / 3 mol Br₂) = 0.02333 mol.

Hint

Use the mole ratio from the balanced equation.

Question Info