Z2O3+3H2→2Z+3H2O Valency of metal in Z2O3=3 0.1596g of Z2O3 react with 6mg of H2. [1mg=0.001g=10−3g] ∴1g of H2 react with =
0.1596
0.006
=26.6g of Z2O3 ∴ Eq. wt. of Z2O3=26.6 Now, Eq. wt. of Z+ Eq. wt. of O= Eq. wt. of Z+8=26.6 ⇒ Eq. wt. of Z=26.6−8=18.6 ∴ At. wt. of Z=18.6×3=55.8 [∵Eq. wt.=