The formate ion, ( forms ionic compounds with many metal ions. 9.7416 g of m(cho2)2 (where m represent the atomic symbol for a particular metal) is dissolved in water. when a solution of 0.200 m sodium sulfate is added, a white precipitate (mso4) forms. the sodium sulfate solution is added until no more precipitate forms; then a few mililiters are added in excess. the precipitate is filtered, dried and weighed. it has a mass of 9.9389 g. the filtrate is saved for further use. identify m.

a potassium permanganate solution is standardized by dissolving 0.9234g of sodium oxalate in dilute sulfuric acid and then titrating with the potassium permanganate solution. the principal products of the reaction are the manganese (ii) ion and carbon dioxide gas. the titration requires 18.55 ml of the potassium permanganate solution to reach the endpoint, which is indicated by the first permanent, but barely perceptible, pink color of the permanganate ion.

the filtrate from the original reaction is diluted by pouring it into a 250 ml volumetric flask, diluting to the mark with water, and then mixing thoroughly. an aliquot consisting of 10.00 ml of this diluted solution is pipetted into a 125 ml erlenmeyer flask, approximately 25 ml of water is added, and the solution is made basic.

what volume of the standard permanganate solution will be needed to titrate this solution to the equivalence point? the principal products of the reaction are carbonate ion and manganese (iv) oxide.