Q.
10ml of a mixture of H2 and O2 is exploded. If the final volume of gas becomes 1ml, then the composition of original mixture may be,
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a
7mlH2,3mlO2
b
6mlH2,4mlO2
c
5mlH2,5mlO2
d
8mlH2,2mlO2
answer is B.
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Detailed Solution
H2+1/2O2→H2O1v 1/2v Left: x 1/2 xH2&O2⏟10ml Let vol. of H2 is x Then vol. of O2 is 10-xVFinal =Vinitial -(x+1/2x)1=10-(3/2x)32x=9∴x=6ml∴H2 and O2 volumes are x and (10-x)= 6 and (10 – 6 )= 6 and 4
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