The gaseous reaction Ag→2B(g)+C(g) obeys first order kinetics. The initial pressure is 90 mm and after 10 minutes it is 180 mm. The velocity constant ‘k’ of the reaction is:
A
1.15×103s−1
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B
2.30×103s−1
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C
3.45×10−3s−1
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D
1.15×10−3s−1
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Solution
The correct option is D1.15×10−3s−1 A→2B+C Pi9000 Pt=18090−p2pp 180=90−p+2p+p by calculating we get p=45 −ln(PA)t(PA)0=kt −ln4590=k×60×10 k=1.15×10−3s−1