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Q.

The instantaneous rate of disappearance of the MnO4 ion in the following reaction is 4.56×103 Ms1 Then, the rate of appearance of I2 is:

2MnO4+10I+16H+2Mn2++5I2+8H2O

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a

5.7×103Ms1

b

1.14×103Ms1

c

1.14×102Ms1

d

4.56×104Ms1

answer is D.

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Detailed Solution

Given reaction is,

2MnO4+10I+16H+2Mn2++5I2+8H2O

Disappearance of the MnO4 ion,

12dMnO4dt=+15dI2dt

So, the rate of appearance of I2 is:

dI2dt=52×4.56×103

dI2dt=1.14×102Ms1

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