Physical Properties of Halogen Containing Compounds
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CHXII10:HALOALKANES AND HALOARENES

322758 Arrange the following compounds in increasing order of their boiling points.
supporting img

1 (II) \( < \) (I) \( < \) (III)
2 (I) \( < \) (II) \( < \) (III)
3 (III) \( < \) (I) \( < \) (II)
4 (III) \( < \) (II) \( < \) (I)
CHXII10:HALOALKANES AND HALOARENES

322759 Assertion :
n-Butyl bromide has higher boiling point than isobutyl bromide.
Reason :
The branching of the chain makes the molecule more compact and therefore decreases the surface area.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII10:HALOALKANES AND HALOARENES

322760 The correct order of boiling points of alkyl halides is

1 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RF}>\mathrm{RCl}\)
2 \(\mathrm{Rl}>\mathrm{RCl}>\mathrm{RBr}>\mathrm{RF}\)
3 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{RF}\)
4 \(\mathrm{RF}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{Rl}\)
MHTCET - 2019
CHXII10:HALOALKANES AND HALOARENES

322761 Boiling points of alkyl chlorides and alkyl iodides have been compared with alkane
\[\begin{array}{*{20}{c}}
{}&{}&{{\rm{Boiling}}\,\,{\rm{points}}}\\
{{\rm{n - butylchloride}}}&{\left( {{\rm{92}}{\rm{.5}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{78}}{\rm{.4^\circ C}}}\\
{{\rm{n - hexane}}}&{\left( {{\rm{86}}{\rm{.2}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{68}}{\rm{.7^\circ C}}}\\
{{\rm{methyliodide}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{42}}{\rm{.5^\circ C}}}\\
{{\rm{n - decane}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{164^\circ C}}}
\end{array}\]
Boiling point of \({\rm{n}}\)-hexane is about same as of \({\rm{n}}\) butyl chloride (of same molar mass), while boiling point of n-decane is higher than that of methyl iodide (of same molar mass). This is due to which of the following?

1 Greater molecular volume of alkanes than alkyl iodides.
2 Compensation of polar effects and molecular volumes in alkyl chlorides and alkanes.
3 Both (1) and (2)
4 None of the above
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CHXII10:HALOALKANES AND HALOARENES

322758 Arrange the following compounds in increasing order of their boiling points.
supporting img

1 (II) \( < \) (I) \( < \) (III)
2 (I) \( < \) (II) \( < \) (III)
3 (III) \( < \) (I) \( < \) (II)
4 (III) \( < \) (II) \( < \) (I)
CHXII10:HALOALKANES AND HALOARENES

322759 Assertion :
n-Butyl bromide has higher boiling point than isobutyl bromide.
Reason :
The branching of the chain makes the molecule more compact and therefore decreases the surface area.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII10:HALOALKANES AND HALOARENES

322760 The correct order of boiling points of alkyl halides is

1 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RF}>\mathrm{RCl}\)
2 \(\mathrm{Rl}>\mathrm{RCl}>\mathrm{RBr}>\mathrm{RF}\)
3 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{RF}\)
4 \(\mathrm{RF}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{Rl}\)
MHTCET - 2019
CHXII10:HALOALKANES AND HALOARENES

322761 Boiling points of alkyl chlorides and alkyl iodides have been compared with alkane
\[\begin{array}{*{20}{c}}
{}&{}&{{\rm{Boiling}}\,\,{\rm{points}}}\\
{{\rm{n - butylchloride}}}&{\left( {{\rm{92}}{\rm{.5}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{78}}{\rm{.4^\circ C}}}\\
{{\rm{n - hexane}}}&{\left( {{\rm{86}}{\rm{.2}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{68}}{\rm{.7^\circ C}}}\\
{{\rm{methyliodide}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{42}}{\rm{.5^\circ C}}}\\
{{\rm{n - decane}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{164^\circ C}}}
\end{array}\]
Boiling point of \({\rm{n}}\)-hexane is about same as of \({\rm{n}}\) butyl chloride (of same molar mass), while boiling point of n-decane is higher than that of methyl iodide (of same molar mass). This is due to which of the following?

1 Greater molecular volume of alkanes than alkyl iodides.
2 Compensation of polar effects and molecular volumes in alkyl chlorides and alkanes.
3 Both (1) and (2)
4 None of the above
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CHXII10:HALOALKANES AND HALOARENES

322758 Arrange the following compounds in increasing order of their boiling points.
supporting img

1 (II) \( < \) (I) \( < \) (III)
2 (I) \( < \) (II) \( < \) (III)
3 (III) \( < \) (I) \( < \) (II)
4 (III) \( < \) (II) \( < \) (I)
CHXII10:HALOALKANES AND HALOARENES

322759 Assertion :
n-Butyl bromide has higher boiling point than isobutyl bromide.
Reason :
The branching of the chain makes the molecule more compact and therefore decreases the surface area.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII10:HALOALKANES AND HALOARENES

322760 The correct order of boiling points of alkyl halides is

1 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RF}>\mathrm{RCl}\)
2 \(\mathrm{Rl}>\mathrm{RCl}>\mathrm{RBr}>\mathrm{RF}\)
3 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{RF}\)
4 \(\mathrm{RF}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{Rl}\)
MHTCET - 2019
CHXII10:HALOALKANES AND HALOARENES

322761 Boiling points of alkyl chlorides and alkyl iodides have been compared with alkane
\[\begin{array}{*{20}{c}}
{}&{}&{{\rm{Boiling}}\,\,{\rm{points}}}\\
{{\rm{n - butylchloride}}}&{\left( {{\rm{92}}{\rm{.5}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{78}}{\rm{.4^\circ C}}}\\
{{\rm{n - hexane}}}&{\left( {{\rm{86}}{\rm{.2}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{68}}{\rm{.7^\circ C}}}\\
{{\rm{methyliodide}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{42}}{\rm{.5^\circ C}}}\\
{{\rm{n - decane}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{164^\circ C}}}
\end{array}\]
Boiling point of \({\rm{n}}\)-hexane is about same as of \({\rm{n}}\) butyl chloride (of same molar mass), while boiling point of n-decane is higher than that of methyl iodide (of same molar mass). This is due to which of the following?

1 Greater molecular volume of alkanes than alkyl iodides.
2 Compensation of polar effects and molecular volumes in alkyl chlorides and alkanes.
3 Both (1) and (2)
4 None of the above
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII10:HALOALKANES AND HALOARENES

322758 Arrange the following compounds in increasing order of their boiling points.
supporting img

1 (II) \( < \) (I) \( < \) (III)
2 (I) \( < \) (II) \( < \) (III)
3 (III) \( < \) (I) \( < \) (II)
4 (III) \( < \) (II) \( < \) (I)
CHXII10:HALOALKANES AND HALOARENES

322759 Assertion :
n-Butyl bromide has higher boiling point than isobutyl bromide.
Reason :
The branching of the chain makes the molecule more compact and therefore decreases the surface area.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXII10:HALOALKANES AND HALOARENES

322760 The correct order of boiling points of alkyl halides is

1 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RF}>\mathrm{RCl}\)
2 \(\mathrm{Rl}>\mathrm{RCl}>\mathrm{RBr}>\mathrm{RF}\)
3 \(\mathrm{Rl}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{RF}\)
4 \(\mathrm{RF}>\mathrm{RBr}>\mathrm{RCl}>\mathrm{Rl}\)
MHTCET - 2019
CHXII10:HALOALKANES AND HALOARENES

322761 Boiling points of alkyl chlorides and alkyl iodides have been compared with alkane
\[\begin{array}{*{20}{c}}
{}&{}&{{\rm{Boiling}}\,\,{\rm{points}}}\\
{{\rm{n - butylchloride}}}&{\left( {{\rm{92}}{\rm{.5}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{78}}{\rm{.4^\circ C}}}\\
{{\rm{n - hexane}}}&{\left( {{\rm{86}}{\rm{.2}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{68}}{\rm{.7^\circ C}}}\\
{{\rm{methyliodide}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{42}}{\rm{.5^\circ C}}}\\
{{\rm{n - decane}}}&{\left( {{\rm{142}}\;{\rm{g}}\;{\rm{mo}}{{\rm{l}}^{{\rm{ - 1}}}}} \right)}&{{\rm{164^\circ C}}}
\end{array}\]
Boiling point of \({\rm{n}}\)-hexane is about same as of \({\rm{n}}\) butyl chloride (of same molar mass), while boiling point of n-decane is higher than that of methyl iodide (of same molar mass). This is due to which of the following?

1 Greater molecular volume of alkanes than alkyl iodides.
2 Compensation of polar effects and molecular volumes in alkyl chlorides and alkanes.
3 Both (1) and (2)
4 None of the above