the number of mole of k2cr2o7 required to oxidise 0.2 mol of h2s in acidic medium is
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Answer:
0.06 moles of K2Cr2O7 is required
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HELLO DEAR,
ANSWER:-
The balanced chemical equation for the reaction between potassium dichromate and hydrogen sulfide is as given below
K2Cr2O7 + 4H2SO4 + 3H2S -------> K2SO4 + Cr2(SO4)3 + 7H2O + 3 S.
1 mole of potassium dichromate reacts with 3 moles of hydrogen sulphide.
Hence ,the number of moles of potassium dichromate ( K2Cr2O7)
that will be needed to react 0.2 moles of H2S in acidic medium is 0.2/3 moles.
I HOPE IT'S HELP YOU DEAR,
THANKS.
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