MCQ
It is recommended that liquid ammonia bottle should be opened after cooling it in ice for sometime. This is because liquor ammonia:
- Abrings tears in the eyes
- Bis a corrosive liquid
- Cis a mild explosive
- ✓generates high vapour pressure
The vapour pressure of ammonia at room temperature is very high and hence the ammonia will evaporate unless the vapour pressure is decreased.
Cooling decreases the vapour pressure so that the liquid remains in the same state. Hence, the bottle is cooled before opening.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Student $I$ :- She mixed $B_2H_6$ and $NH_3$
Student $II$ :- He mixed $B_2H_6$ with $THF$ followed by addition of $NH_3$
Which student is expected to get the $CORRECT$ final product ?
$Zn_{(s)} + Ag_2O_{(s)} + H_2O_{(l)} \rightleftharpoons $$2Ag_{(s)} + Zn^{2+}_{(aq)}+ 2OH^-_{(aq)}$
If half cell potentials are
$Zn^{2+}_{(aq)} + 2e^- \rightarrow Zn_{(s)}\,;\,\, E^o = - 0.76\, V$
$Ag_2O_{(s)} + H_2O_{(l)} + 2e^- \rightarrow 2Ag_{(s)} + 2OH^-_{(aq)}\,,$$E^o = 0.34\, V$
The cell potential will be ........... $V.$