Manipal MET2018ChemistrySome Basic Concepts of Chemistry

A certain amount of a metal whose equivalent mass is 28 displaces 0.7 ~L ⁻ of H ₂ at STP from an acid. Hence, mass of the element is

Options

A1.75 g
B0.875 g
C3.50 g
D7.00 g

Correct answer

A. 1.75 g

Step-by-step solution

Mass of H ₂= 0.7 22.4 2= 14 224 ~g =0.0625 ~g 0.0625 ~g of hydrogen is displaced by x ~g of metal. 1 ~g of hydrogen is displaced by x 0.0625 g of metal. x 0.0625 =28 Mass of met (x)=28 0.0625=1.75 ~g

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