Question

CHEMISTRY 11. The molecular mas of X’ is 106. Which contain a metal Yin it. What is ‘X' and 'Y' and valency of Y' in the compound respectively? (A) CaCO, C2, +2 (B) Na.Co, Na, +2 ACaco (C) Na2CO, Na +1 (D) CaCOCA +1​

Answer 1

Answer:

Molecular weight of X4O6=(4a+96)

∵(4a+96)g X4O6 contains X=4a g

∴10g of X4O6 contains X=4a+964a×10

5.72=4a+964a×10

22.88a+549.12=40a

17.12a=549.12

a=32.07amu.