ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Chemistry Chemical Equilibrium 1

Question:
Law of mass action states that rate of chemical reaction is directly proportional to the product of active masses of the reactants. The term active mass means

Option A):
Mass in grams converted to products
Option B):
Number of moles per dm³ of reactants
Option C):
Total pressures of the reactants
Option D):
Number of moles

Correct Answer is Option B):
Number of moles per dm³ of reactants