1.

(a) How is hydrogen of high purity prepared? (b) Dihydrogen is relatively inert at room temperature. Give reason. (c) Write any two uses of hydrogen.

Answer»

(a) High purity (>99.95%) dihydrogen is obtained by electrolysing warm aqueous barium hydroxide . solution between nickel electrodes.

(b) This is due to high H-H bond enthalpy. 

(c) 1. In oxy-hydrogen torches. 

2. Liquid hydrogen is used as a fuel in rockets.



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