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A system at equlibrium is given below. N...

A system at equlibrium is given below. `N_(2)(g)+3H_(2)hArr2NH_(3)+Heat`
a) When does a reversible process attain equlibrium?
b) What change occurs in the concentration of reactants and products in a system at equlibrium?

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a) when the rates of forward and backward reactions be come equal
b) The conentration of the existing reactants and products will remain the same
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