The rate constant for disappearance of reactant as mentioned in is 2×10−2molL−1sec−1, if the concentration of the reactant after 25 sec is 0.25M, the initial concentration is:
0.75 M
1.46 M
0.89 M
1.03 M
A
0.75 M
B
1.46 M
C
1.03 M
D
0.89 M
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Solution
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From rate constant it can be seen that it is zero order reaction and a−x=kt;a=x+kt=0.25+2×10−2×25=0.75 M.
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