Question

If equivalent weight of metal oxide is 28 then equivalent weight of metal carbonate of same metal is​

Answer 1

Answer:

20 is the correct answer

Explanation:

Equivalent mass of oxygen is 8g/mol so eq.mass of metal oxide is 12+8=20g/mol(since one equiv of metal reacts with one equivalent of oxygen)

Thus eq.wt of metal oxide is 20g/mol.

Answer 2

Explanation:

equivalent weight of oxygen is 8

here,

equivalent weight of metal oxide is 28

so

equivalent weight of metal oxide=equivalent weight of metal+ equivalent weight of oxygen

28= equivalent weight of metal + 8

therefore

equivalent weight of metal=20

so equivalent weight of metal carbonate =equivalent weight of metal + equivalent weight of carbonate

eq wt of carbonate = 20 + 30

equivalent weight of metal carbonate is 50

eq weight= molar mass/ valency

molar mass of carbonate is 60 and its valancy is 2

so its eq weight is 30.

so answer is 50 eq