Identify the correct statements from the following i. Reaction of hydrogen with fluorine occurs even in dark…
Identify the correct statements from the following
i. Reaction of hydrogen with fluorine occurs even in dark.
ii. Manufacture of ammonia by Haber process is an endothermic reaction
iii. HF is electron rich hydride
i, iii only
i, ii, iii
ii, iii only
i, ii only
Solution
$\mathrm{H}_2(\mathrm{~g})+\mathrm{F}_2(\mathrm{~g}) \longrightarrow 2 \mathrm{HF}(\mathrm{g})$
$\mathrm{F}_2$ is highly reactive so it reacts with hydrogen even in dark.
$\mathrm{N}_2+3 \mathrm{H}_2 \xrightarrow[200 \mathrm{~atm}]{\substack{\text { Fe (Catalyst }) \\ 400-450^{\circ} \mathrm{C}}} 2 \mathrm{NH}_3+\text { Heat }$
The reaction is an exothermic reaction, there is a release of energy.
HF is electron rich hydride because its fluorine atom having extra electrons present as lone pair.
So any (i) and (iii) are correct.