AIIMS2014Chemistry-Stoichiometry
AIIMS 2014 Chemistry Stoichiometry MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The stoichiometry of the following reaction is K2S2O8(aq) + 2KI(aq) → 2K2SO4(aq) + I2(aq)
A
2 : 1
B
1 : 2
C
2 : 2
D
1 : 3
Correct Answer
Option A
Detailed Explanation
The correct answer is B) 1 : 2 because the balanced chemical equation shows that one mole of potassium persulfate (K2S2O8) reacts with two moles of potassium iodide (KI). This 1:2 ratio directly reflects the stoichiometry of the reactants in the reaction, indicating that for every mole of K2S2O8, two moles of KI are required.
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