question_answer

Amount of of potassium dichromate in grams required to oxidise 20.0 g of \[F{{e}^{2+}}\] in  \[FeS{{O}_{4}}\]  to  \[F{{e}^{3+}}\] if the reaction is carried out in an acidic medium is ________. (Molar masses of \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]  and  \[FeS{{O}_{4}}\] are 294 and 152 respectively.)

Answer:

6.47