For the reaction \[{{H}_{2}}(g)+{{I}_{2}}(g)\]⇌\[2HI(g)\], the rate of reaction is expressed as [CBSE PMT 1997; AIEEE 2002]

\[\frac{\Delta [{{I}_{2}}]}{\Delta t}=\frac{\Delta [{{H}_{2}}]}{\Delta t}=\frac{\Delta [HI]}{2\Delta t}\]

\[-\frac{\Delta [{{I}_{2}}]}{\Delta t}=-\frac{\Delta [{{H}_{2}}]}{\Delta t}=\frac{1}{2}\frac{\Delta [HI]}{\Delta t}\]

\[\frac{\Delta [{{H}_{2}}]}{\Delta t}=\frac{1}{2}\frac{\Delta [{{I}_{2}}]}{\Delta t}=-\frac{\Delta [HI]}{\Delta t}\]

For the reaction \[{{H}_{2}}(g)+{{I}_{2}}(g)\]⇌\[2HI(g)\], the rate

1.	For the reaction \[{{H}_{2}}(g)+{{I}_{2}}(g)\]⇌\[2HI(g)\], the rate of reaction is expressed as [CBSE PMT 1997; AIEEE 2002]
A.	\[-\frac{\Delta [{{I}_{2}}]}{\Delta t}=-\frac{\Delta [{{H}_{2}}]}{\Delta t}=\frac{1}{2}\frac{\Delta [HI]}{\Delta t}\]
B.	\[\frac{\Delta [{{I}_{2}}]}{\Delta t}=\frac{\Delta [{{H}_{2}}]}{\Delta t}=\frac{\Delta [HI]}{2\Delta t}\]
C.	\[\frac{\Delta [{{H}_{2}}]}{\Delta t}=\frac{1}{2}\frac{\Delta [{{I}_{2}}]}{\Delta t}=-\frac{\Delta [HI]}{\Delta t}\]
D.	None of these
Answer» B. \[\frac{\Delta [{{I}_{2}}]}{\Delta t}=\frac{\Delta [{{H}_{2}}]}{\Delta t}=\frac{\Delta [HI]}{2\Delta t}\]

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For the reaction \[{{H}_{2}}(g)+{{I}_{2}}(g)\]⇌\[2HI(g)\], the rate of reaction is expressed as [CBSE PMT 1997; AIEEE 2002]

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