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The answer to each of the following ques...

The answer to each of the following questions is a single digit integer, ranging from 0 to 9. If the correct answer to the question numbers A,B,C and D (say) are 4,0,9, and 2 respectively. Then the correct darkening of bubbles should be as shown on the slide.
If the temperature of a reaction is increased from `20^(@)C` to `50^(@)C` the rate of reaction will become.....times.

Text Solution

Verified by Experts

The correct Answer is:
`(C) rarr 8`
Amount left after on half lives `= ([A]_(0))/(2^(n))`
`=3.125% "of"|A|_(6)`
`=0.03125" of "|A|_(0)`
`:. (1)/(2^(n))=0.03125=(3125)/(100000) |A|_(0)`
`:. n=5`
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