In a chemical reaction, K2Cr2O7 + x H2SO4 + y SO2 → K2SO4 + Cr2(SO4)3 + z H2O x, y, z are, respectively

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In a chemical reaction, K2Cr2O7 + x H2SO4 + y SO2 → K2SO4 + Cr2(SO4)3 + z H2O x, y, z are, respectively