Which statement is correct regarding a cataly | vedclass

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(C) catalyst is a substance that alters the rate of a chemical reaction without itself undergoing any permanent chemical change.
$1$. $A$ catalyst ca

Vedclass · Accepted Answer

$C$. $A$ catalyst cannot change the enthalpy of reaction.

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(C) catalyst is a substance that alters the rate of a chemical reaction without itself undergoing any permanent chemical change.
$1$. $A$ catalyst cannot initiate a reaction that is not thermodynamically feasible.
$2$. $A$ negative catalyst (inhibitor) increases the activation energy; it does not decrease it.
$3$. $A$ catalyst provides an alternative pathway with lower activation energy,but it does not change the initial and final energy states of the reactants and products; hence,the enthalpy of reaction $(\Delta H)$ remains unchanged.
$4$. In a reversible reaction,a catalyst increases the rate of both the forward and backward reactions to the same extent,thereby helping the system reach equilibrium faster without changing the equilibrium constant.

Catalyst	Process
$i. Na_{2}O$	$a. \text{Oxidation of } SO_{2} \text{ in the manufacture of } H_{2}SO_{4}$
$ii. TiCl_{4} + Al(CH_{3})_{3}$	$b. \text{Polymerisation of ethylene}$
$iii. PdCl_{2}$	$c. \text{The oxidation of ethyne to ethanal}$
$iv. \text{Nickel complexes}$	$d. \text{Polymerisation of alkynes}$

Column-$I$ Catalyst	Column-$II$ Product
$(a)$ $V_2O_5$	$(i)$ Polyethylene
$(b)$ $TiCl_4/Al(Me)_3$	$(ii)$ Ethanal
$(c)$ $PdCl_2$	$(iii)$ $H_2SO_4$
$(d)$ Iron oxide	$(iv)$ $NH_3$

Which statement is correct regarding a catalyst?

Similar Questions

In the case of autocatalysis,..........

Explain the process in which a biocatalyst is used in the industrial preparation of a compound known to you.

Match the catalyst (Column-$I$) with products (Column-$II$)

Column-$I$ Catalyst Column-$II$ Product

$(a)$ $V_2O_5$ $(i)$ Polyethylene

$(b)$ $TiCl_4/Al(Me)_3$ $(ii)$ Ethanal

$(c)$ $PdCl_2$ $(iii)$ $H_2SO_4$

$(d)$ Iron oxide $(iv)$ $NH_3$

In this reaction,dilute $H_2SO_4$ is called
$\underset{\text{Sucrose}}{\mathop{C_{12}H_{22}O_{11}}}+H_2O$ $\xrightarrow{dil. H_2SO_4}\underset{\text{Fructose}}{\mathop{C_6H_{12}O_{6(aq)}}}+\underset{\text{Glucose}}{\mathop{C_6H_{12}O_{6(aq)}}}$

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