gneet

Study Companion

For more NEET and AIIMS mcq on Chemical arithmetic and volumetric analysis Visit www.gneet.com
QUESTION

Q21) A metal oxide has the formula Z2O3. It can be reduced by hydrogen to give free metal and water. 0.1596g of the metal oxide requires 6 mg of hydrogen for complete reduction. The atomic weight of the metal is ... [ CBSE PMT 1989]




SOLUTION

0.1596 g of Z2O3 reacts with 0.006 g of hydrogen
∴ 1 g of H2 reacts with 26.6 g of Z2O3
∴ Eq.Wt of Z2O3=Eq.Wt of Z + eq.wt of O
26.6=E + 8
E=18.6
At. wt=Equivalent wt × valency
At Wt of Z=18.6 × 3=55.8
Answer: (d)