Solve and balance the chemical reactions ............ 1. Iron pyrites + oxygen = Ferric oxide +sulphur dioxide 2 . Potassium dichromate + hydrocholric acid=potassium cholride+chromium chloride+water+chloride
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2Fe+5O=Fe2O3+SO2,K2Cr2O7+HCL=KCL+CrCl2+H2O+Cl
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