Single Choice

Which of the following observations can be explained on the basis of hydrogen bonding? (i) $$H-F$$ has higher boiling point than other halogen acids. (ii) $$H_2O$$ has highest boiling point among hydrides of group 16 elements. (iii) $$NH_3$$ has lower boiling point than $$PH_3$$.

A(i), (ii) and (iii)
B(i) and (iii)
C(ii) and (iii)
D(i) and (ii)
Correct Answer

Solution

1.Due to the high electronegativity of flourine hydrogen bonds can be formed between HF molecules,hence H-F has high boiling point than other halogen.

2.Water has an anomalously high boiling point since its particles are bonded with each other by the hydrogen bonds in both its liquid as well as solid states.

3.$$NH_3$$ has a higher boiling point than $$PH_3$$ due to hydrogen bonding.

$$NH_3$$ has lower boiling point than $$BiH_3$$ and $$SbH_3$$
As in this case, the molecular weight is dominant over the hydrogen bonding.

So the correct option is $$[D]$$.

SIMILAR QUESTIONS

Chemical Bonding

The low density of ice compared to water is due to:

Chemical Bonding

Statement 1 : Conc $$\mathrm{H}_{2}\mathrm{S}\mathrm{O}_{4}$$ is a low volatility and viscos nature acid. Statement2: lt is due to Hydrogen bonding.

Chemical Bonding

Identify the correct statement(s) given below. (a) $$O_2$$ is paramagnetic. (b) $$H_2O$$ is liquid while $$H_2S$$ is gas under given conditions. (c) Boiling point of $$H_2O$$ is abnormally high.

Chemical Bonding

The correct order of boiling point is:

Chemical Bonding

The electronegativities of nitrogen and chlorine are almost same. However, $$NH_3$$ exists as liquid whereas $$HCl$$ as gas due to __________ between the molecules of $$NH_3$$.

Chemical Bonding

Hydrogen bonding plays a central role in the following phenomena :

Chemical Bonding

In solid ice, oxygen atom is surrounded

Chemical Bonding

Hydrogen halide with the highest boiling point is:

Chemical Bonding

The ice floats on water because:

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