Question

Match the graph given in Column I with the order of reaction given in Column II.
More than one item in Column I may link to the same item of Column II. [NCERT Exemplar]

Answer 1

Answer:

CHEMISTRY

Match the graphs given in column I with the order given in column II and mark the appropriate choice.

Column II

(i) Third order

(ii) First order

(iii) Zero order

(iv) Second order

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ANSWER

Formula that relate concentration and time is:-

Kt=

n−1

1

[

Ao

n−1

1

−

At

n−1

1

],

t∝

Ao

1

n−1

For zero order reaction, this equation will be

At=Ao−Kt

Y=+c−mx so the first is zero order reaction graph,

[slope is negative]

For first order reaction, this equation will be

log[At]=log[Ao]−Kt

Y=+c−mx so the second is first order reaction graph,

[slope is negative]

For C and D there is direct relation between time and concentration

t∝

Ao

1

n−1

for C power of {A} is −1 that means 1−n=−1

So order(n)=1+1=2

for D power of {A} is −2that means 1−n=−2

So order(n)=2+1=3.

So the correct option is [B].