Question

Determine what is wrong with the chemical formula and write the correct chemical formula for each of the following compounds: (a) (NH3)2C03 (ammonium carbonate), (b) CaOH2 (calcium hydroxide), (c) CdSO3 (cadmium sulfide), (d) ZnCrO4 (zinc dichromate).

Answer 1

Answer and Explanation:

(A)
`(NH_3)_2CO_3` this is the wrong formula of ammonium carbonates there should be
`NH_4` in place of
`NH_3` and correct formula is
`(NH_4)_2CO_3`

(b)
`CaOH_2` is wrong formula of calcium hydroxide there should be
`(OH^-)_2` in place of
`OH_2` and the correct formula is
`Ca(OH)_2`

(C)
`CdSO_3` is wrong formula of cadmium sulfide there should be only S in place of
`SO_3` and the correct formula is CdS

(D)
`ZnCrO_4` is wrong formula of zinc dichromate the correct formula is
`Cr_2O_7Zn`