Rate of reaction is defined as:
AAmount of product
BChange in concentration of reactant per unit time
CTotal moles
DVelocity
Answer & Solution
Correct answer: B. Change in concentration of reactant per unit time
Rate = -d[R]/dt = +d[P]/dt (concentration change per unit time). SI unit: mol L⁻¹ s⁻¹. Defined positive.
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