According to the following equation if 3 mol of Fe2(CO3)3 are mixed with 20 mol of H+1:

Fe2(CO3)3 +6H+1 ==>2Fe+3 + 3CO2 +3H2O

A. all the Fe2(CO3)3 will react.
B. all of the H+1 will react.
C. 3.3 mol ofFe2(CO3)3 will react.
D. 1.6 mol of H+1 will remain unreacted.

You need a 1 to six mol ratio, you actually are using 1 to 6.66 ratio, so you have too much hydrogen ion.

Name the compound whose formula is Fe2(CO3)3.

The compound with the formula Fe2(CO3)3 is called iron(III) carbonate.