Practicing Success
Match the entries of column I with appropriate entries of column II and choose the correct option out of the four options given.
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(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv) (a)-(iv), (b)-(ii), (c)-(iii), (d)-(i) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i) |
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) |
The correct answer is option 3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i).
Let us explain the matching in detail: (a) Average rate of reaction: (iv) \(\frac{ΔC}{Δt}\) The average rate of reaction measures how the concentration of a reactant or product changes over a specific time interval. It is typically expressed as: \(\text{Average rate} = \frac{\Delta C}{\Delta t}\) where \(\Delta C\) is the change in concentration over the time interval \(\Delta t\). (b) Instantaneous rate of reaction: (iii) \(\frac{dC}{dt}\) The instantaneous rate of reaction is the rate at a particular moment in time. It is the derivative of the concentration of a reactant or product with respect to time: \(\text{Instantaneous rate} = \frac{dC}{dt}\) where \(dC\) is the infinitesimal change in concentration and \(dt\) is the infinitesimal change in time (c) Active mass: (ii) Molar concentration of substance Active mass refers to the effective concentration of a substance in a reaction. In most cases, it is simply the molar concentration of the substance. This concept is crucial in the context of the law of mass action. (d) Rate law: (i) \(\frac{dx}{dt}\) ∝ [A]a x [b]b The rate law expresses the rate of a reaction as a function of the concentrations of reactants raised to specific powers (which are determined experimentally). For a reaction involving reactants \(A\) and \(B\), it can be written as: \(\text{rate} \propto [A]^a [B]^b\) Here, \(a\) and \(b\) are the orders of the reaction with respect to \(A\) and \(B\), respectively. Thus, the correct option is 3. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i) |