The correct statement regarding the functioning of a catalyst is that it- I - alters the energy levels of the reactants and products II - provides an alternate path for climbing the activation energy barrier III - makes the reaction thermodynamically feasible IV - provides a different mechanism for the reaction

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Standard XII

Chemistry

Effect of Catalyst

The correct s...

Question

The correct statement regarding the functioning of a catalyst is that it:
$I \to$ alters the energy levels of the reactants and products
$I I \to$ provides an alternate path for climbing the activation energy barrier
$I I I \to$ makes the reaction thermodynamically feasible
$I V \to$ provides a different mechanism for the reaction

I

and

I I

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I

and

I I I

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I I

and

I V

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I I I

and

I V

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Solution

The correct option is C $I I$ and $I V$
A catalyst provides an alternate path for the reaction which has lower activation energy. It provides a different mechanism for the reaction.

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Similar questions

Q. A catalyst:
(i) increases the average kinetic energy of reacting molecules
(ii) decrease the activation energy
(iii) alters the reaction mechanism
(iv) increases the frequency of collisions of reacting species.
The true statements are:

Which of the following statement is not correct for the catalyst?
(a) It catalysts the forward and backward reactions to the same extent
(b) It alters $Δ G$ of the reaction
(c) It is a substance that does not change the equilibrium constant of the reaction
(d) It provides an alternate mechanism by reducing activation energy between reactants and products

Q. Match the following

\begin{matrix} a) & a & (i) & A c t i v a t i o n e n e r g y o f f o r w a r d r e a c t i o n b) & b & (i i) & C h a n g e i n e n t h a l p y c) & c & (i i i) & A c t i v a t i o n e n e r g y o f b a c k w a r d r e a c t i o n d) & d & (i v) & P o t e n t i a l E n e r g y o f R e a c t a n t s e) & e & (v) & P o t e n t i a l e n e r g y o f P r o d u c t s \end{matrix}

Q. Question 4
Breathing is a process that
(i) provides

O_{2}

to the body.
(ii) breaks down food to release energy.
(iii) helps the body to get rid of

C O_{2}

.
(iv) produces water in the cells.
Which of the following gives the correct combination of functions of breathing?

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)

Q. Match the following

\begin{matrix} a) & a & (i) & A c t i v a t i o n e n e r g y o f f o r w a r d r e a c t i o n b) & b & (i i) & C h a n g e i n e n t h a l p y c) & c & (i i i) & A c t i v a t i o n e n e r g y o f b a c k w a r d r e a c t i o n d) & d & (i v) & P o t e n t i a l E n e r g y o f R e a c t a n t s e) & e & (v) & P o t e n t i a l e n e r g y o f P r o d u c t s \end{matrix}

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The correct option is C II and IVA catalyst provides an alternate path for the reaction which has lower activation energy. It provides a different mechanism for the reaction.

The correct option is C $I I$ and $I V$
A catalyst provides an alternate path for the reaction which has lower activation energy. It provides a different mechanism for the reaction.