1.

In a reaction, 2A rarr products, the concentration of A decreases from 0.5 "mol L"^(-1) to 0.4 "mol L"^(-1) in 10 minutes. Calculate the rate during this interval ?

Answer»

Solution :Average rate `=-(1)/(2)(Delta [A])/(Delta L)`
`=-(1)/(2)([A]_(2)-[A]_(1))/(t_(2)-t_(1))`
`=-(1)/(2)((0.4-0.5)/(10))`
`=-(1)/(2)((-0.1)/(10))`
`= 0.005 "MOL L"^(-1)"MIN"^(-1)`
`= 5xx10^(-3)"M min"^(-1)`.


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