1.

In the reaction 2A+Bto2C+D, 5 mol/lt of A are allowed to react with 2 mol/lt of B. After 5 seconds the concentration of A was found to be 4 molar. What is the rate of reaction in tems of A?

Answer»

`0.1 M"SEC"^(-1)`
`0.2M"sec"^(-1)`
`0.3M"sec"^(-1)`
`0.15 M"sec"^(-1)`

Solution :`underset(5)(2A)+underset(3)(B)tounderset(0)(2C)+underset(0)(D)`
`(5-2x)(3-x)2XX,x=1//2,r_(A)=(5-4)/5=1/5=0.2` M/sec `, r=1/2xx(-d[A])/(DT)=0.2/2=0.1` M/sec


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