1.

Hydrogen may be prepared in the laboratory by the action of a metal on an acid. (a) Which of the metals copper, zinc , magnesium or sodium would be the most suitable ? (b) Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric would you choose ? Explain why you would not use the acids you reject. (c) How would you modify your apparatus to collect dry hydrogen ? Which drying agent would you employ for this purpose ?

Answer»

Hydrogen may be prepared in the laboratory by the action of a metal on an acid.

(a) Which of the metals copper, zinc , magnesium or sodium would be the most suitable ?

(b) Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric would you choose ? Explain why you would not use the acids you reject.

(c) How would you modify your apparatus to collect dry hydrogen ? Which drying agent would you employ for this purpose ?



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