Question

# The amount of zinc required to produce $$224$$ ml of $$H_2$$ at NTP on treatment with dilute $$H_2SO_4$$ solution will be:

A
0.65g
B
0.065 g
C
65g
D
6.5g

Solution

## The correct option is B $$0.65$$gLet us consider the problem.zinc reacts with sulfuric acid according to the following formula.$$Zn + {H_2}S{O_4} \to ZnS{O_4} + {H_2}$$Therefore, $$1$$ mole of zinc reacts to give $$1$$ mole of hydrogenVolume of $$1$$ mole of hydrogen at $$STP$$ is $$22400$$ $$ml$$$$1$$ mole of $$Zn$$ is $$65$$ gramsTherefore $$0.65$$ grams of zinc reacts to give $$224$$ $$ml$$ of hydrogen.Hence, the correct option is $$A$$Chemistry

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