Match the appropriate units with the term: 1/M.s, M, s-1, M/s ___ The rate const

Question

Match the appropriate units with the term: 1/M.s, M, s-1, M/s

___ The rate constant for a reaction with the rate equation; Rate = k[Y]

___ The rate constant for a 1st order rate equation

___ The rate constant for a reaction with the rate equation; Rate=k

___  The concentration of 'X' in a reaction with the rate equation; Rate = k[X][Y]

___ The rate of a reaction with the rate equation; Rate = k[Y]

___ The rate constant for a reaction with the rate equation; Rate = k[X][Y]

___  The rate constant for a second order rate equation

___  The rate constant for a reaction with the rate equation; Rate = k[Z]^2

Explanation / Answer

Rate constant (k) = (moles/lit)1-n time-1

where n = overall order of the reaction.

1) The rate constant for a reaction with the rate equation; Rate = k[Y] is the k whose units is s-1 . Because it is a first-order reaction and the order depends on only the concentration of Y.

2) take a general reaction A -----------> P whose order with respect to A is 1. the rate law is defined as Rate = k [A]

The rate constant (k) = rate / [A] and the units are time-1 i .e s-1

3) The rate constant for a reaction with the rate equation; Rate=k, since the rate of reaction is equal to the rate constant, it is a zero order reaction. the units of rate constant are moles .lit-1 Time-1 i.e M.s-1

4)   The concentration of 'X' in a reaction with the rate equation; Rate = k[X][Y],

[X] = Rate/k[Y], it is a second-order reaction and the units of rate constants are lit.mol-1.time-1 i.e M-1 s-1

5)  The rate of a reaction with the rate equation; Rate = k[Y] units of rate constants are time-1 i.e s-1

6) The rate constant for a reaction with the rate equation; Rate = k[X][Y] , since the overall order of the reaction from this rate equation is 2. therefore, the units of rate constant k is lit.mol-1.time-1 i.e M-1 s-1

7) The rate constant for a second order rate equation lit.mol-1.time-1 i.e M-1 s-1

8) The rate constant for a reaction with the rate equation; Rate = k[Z]2 , since it is a second order reaction, the units of second order rate constant would be lit.mol-1.time-1 i.e M-1 s-1

Thanks and I hope u like the answer

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