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How is hydrogen prepared: a) From water by using a reducing agent? b) In laboratory in the pure form? c) From hydrocarbon?

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asked Oct 10, 2017 in Chemistry by jisu zahaan (28,760 points) ● 26 ● 373 ● 800

How is hydrogen prepared: 

(a) From water by using a reducing agent? 

(b) In laboratory in the pure form? 

(c) From hydrocarbon? 

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answered Oct 10, 2017 by sforrest072 (157,439 points) ● 60 ● 409 ● 931

a) It is usually prepared by the reaction of granulated zinc with dilute hydrochloric acid. 

2Na + 2H2O ⟶ 2NaOH + H2 

b) By the electrolysis of water. 

c) CH4 + H2O(g) ⟶ Co(g) + 3H2(g)

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