Chemical Kineti...

$${ T }_{ 50\% }$$ of first order reaction is $$10$$ min. Starting with $$10$$ $$mol$$ $${ L }^{ -1 }$$, rate after $$20$$ min is:

A substance reacts with initial concentration of $$a$$ $$mol$$ $${ dm }^{ -3 }$$ according to zero order kinetics. The time it takes for the completion of the reaction is: ($$k=$$ rate constant)

Under the same reaction conditions, initial concentration of $$1.386$$ $$mol$$ $${ dm }^{ -3 }$$ of a substance becomes half in $$40$$ seconds and $$20$$ seconds through first order and zero order kinetics respectivley. Ratio $$\left( \dfrac { { k }_{ 1 } }{ { k }_{ 0 } }  \right) $$ of the rate constant for first order $$\left( { k }_{ 1 } \right) $$ and zero order $$\left( { k }_{ 0 } \right) $$ of the reaction is:

The decomposition of $$HI$$ on the surface of gold is:

A drop of solution (volume $$0.05$$ $$mL$$) contains $$3\times { 10 }^{ -6 }$$ mole of $${ H }^{ + }$$. If the rate constant of disappearance of $${ H }^{ + }$$ is $${ 10 }^{ 7 }$$ $$mol$$ $${ litre }^{ -1 }$$ $${ sec }^{ -1 }$$, how long would it take for $${ H }^{ + }$$ in the drop to disappear?

The rate constant of a reaction is found to be $$3\times { 10 }^{ -3 }$$ $$mol$$ $${ L }^{ -1 }$$ $${ min }^{ -1 }$$. The order of the reaction is:

The hydrolysis of ethyl acetate is a reaction of:
$$C{ H }_{ 3 }COO{ C }_{ 2 }{ H }_{ 5 }+{ H }_{ 2 }O\xrightarrow [  ]{ \quad { H }^{ + }\quad  } C{ H }_{ 3 }COOH+{ C }_{ 2 }{ H }_{ 5 }OH$$

Graph between the concentration of the product '$$x$$' and time '$$t$$' for $$A\rightarrow B$$ is given above.
The graph between $$-\dfrac { d\left[ A \right]  }{ dt } $$ and time $$'t'$$ will be of the type:

For a zero order reaction, $$A\longrightarrow P$$, $${ t }_{ { 1 }/{ 2 } }$$ is: 

Following is the graph between $$\log{{ t }_{ { 1 }/{ 2 } }}$$ and $$\log { a } $$ ($$a=$$ initial concentration) for a given reaction at $${ 27 }^{ o }C$$. Hence, order of the reaction is: