In which of the following reactions is there | vedclass

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(C) In the reaction $BaO_2 + H_2SO_4 	o BaSO_4 + H_2O_2$,we analyze the oxidation states of the elements involved.In $BaO_2$ (barium peroxide),$Ba$ i

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$BaO_2 + H_2SO_4 	o BaSO_4 + H_2O_2$

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(C) In the reaction $BaO_2 + H_2SO_4 	o BaSO_4 + H_2O_2$,we analyze the oxidation states of the elements involved.In $BaO_2$ (barium peroxide),$Ba$ is $+2$ and $O$ is $-1$.In $H_2SO_4$,$H$ is $+1$,$S$ is $+6$,and $O$ is $-2$.In $BaSO_4$,$Ba$ is $+2$,$S$ is $+6$,and $O$ is $-2$.In $H_2O_2$ (hydrogen peroxide),$H$ is $+1$ and $O$ is $-1$.Since the oxidation states of all elements $(Ba, O, H, S)$ remain unchanged on both sides of the reaction,this is not a redox reaction and there is no change in valency.

In which of the following reactions is there no change in valency?

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