MCQ
Hydrogen bonding does not play any role in boiling of
- A$N{H_3}$
- B${H_2}O$
- ✓$HI$
- D${C_2}{H_5}OH$
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$(I)$ Bromine water
$(II)$ Tollen's reagents
$(III)$ Shiff's reagent
Statement $I$ : The electronegativity of group $14$ elements from $\mathrm{Si}$ to $\mathrm{Pb}$ gradually decreases.
Statement $II$ : Group $14$ contains non-metallic, metallic, as well as metalloid elements.
In the light of the above statements, choose the most appropriate from the options given below :
$Pt\,|\,B{r_{2(\ell )0.1M}}\,|\,Br_{({\text{aq}}),0.1M}^ - \,||\,H_{_{({\text{aq}})0.1M}}^ + \,|\,{H_{2(g)1atm}}\,|\,Pt$ given ; $E_{B{r^ - }/B{r_2}}^0\, = \, - 1.06\,V$
$H_2 + F_2 \longrightarrow 2HF$
given that
Bond energy of $H-H$ bond $= 434\, kJ/mol$
Bond energy of $F-F$ bond $= 158\, kJ/mol$
Bond energy of $H-F$ bond $= 565\, kJ/mol$
.....$ kJ$