Question

Which of the following reaction is used to prepare dihydrogen gas in the laboratory?

• A. \(2Fe_{(s)} + 3H_2O_{(l)}\xrightarrow{\Delta} Fe_2O_{3(s)} + 3H_2(g)\)
• B. \(2Na_{(s)} + 2H_2O_{(l)}\rightarrow 2NaOH_{(aq)} + H_2(g)\)
• C. \(Fe_{(s)} + 2HCl_{(aq)}\rightarrow FeCl_2_{(aq)} + H_2(g)\)
• D. \(Mg_{(s)} + 2H_2O_{(l)}\xrightarrow{\Delta} Mg(OH)_{2(s)} + H_2(g)\)
• E. \(Ca_{(s)} + 2H_2O_{(l)}\rightarrow Ca(OH)_{2(aq)} + H_2(g)\)

Hint:

Granulated zinc is also commonly used with dilute H2SO4 or HCl in a Kipp's apparatus for controlled H2 production.

Answer 1

The Correct Option is C