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Q.

If two gases have same value of a but different values of b (a and b are van der Waal's constant) which of the following statement is wrong ?

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a

The gas having smaller value of b has larger compressibility

b

The gas having smaller value of b will occupy lesser volume 

c

The gas having smaller value of b has lesser compressibility

 

d

Both (a) and (b)

answer is C.

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Detailed Solution

The gas molecules' effective size is represented by the value of b. Smaller size and more compressible volume are indicated by a smaller value of b.

As a result, the gas will be more compressible if b is less.

So, option C is correct.

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