316269
Assertion : \(\mathrm{HBr}\) is a weaker acid than HI. Reason : Bond energy of \(\mathrm{HI}\) is smaller than that of \(\mathrm{HBr}\).
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.
Explanation:
Hydroiodic acid (HI) is a stronger acid than hydrobromic acid \((\mathrm{HBr})\) because the weaker hydrogen-iodine bond in \(\mathrm{HI}\) facilitates easier dissociation, leading to the release of more \(\mathrm{H}^{+}\) ions compared to the stronger hydrogen-bromine bond in \(\mathrm{HBr}\). Therefore, option (1) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316270
Least volatile hydrogen halide is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HI}\)
4 \(\mathrm{HBr}\)
Explanation:
Except HF (least volatile), all hydrogen halides are gases. HF is a liquid with boiling point \(19.5^{\circ} \mathrm{C}\). This behaviour is due to association of \(\mathrm{HF}\) molecules through hydrogen bonding. \(\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} \)
CHXI11:THE P-BLOCK ELEMENTS
316271
Among the following, the one that has the highest heat of vaporization is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HBr}\)
4 \(\mathrm{HI}\)
Explanation:
HF shows hydrogen bonding. So high heat of vaporization.
CHXI11:THE P-BLOCK ELEMENTS
316272
The property that correspond to the order \(\mathrm{HI}>\) \(\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\) is
1 Thermal stability
2 Reducing power
3 Ionic character
4 Bond strength
Explanation:
Reducing power and acidic strength \(\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\)
316269
Assertion : \(\mathrm{HBr}\) is a weaker acid than HI. Reason : Bond energy of \(\mathrm{HI}\) is smaller than that of \(\mathrm{HBr}\).
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.
Explanation:
Hydroiodic acid (HI) is a stronger acid than hydrobromic acid \((\mathrm{HBr})\) because the weaker hydrogen-iodine bond in \(\mathrm{HI}\) facilitates easier dissociation, leading to the release of more \(\mathrm{H}^{+}\) ions compared to the stronger hydrogen-bromine bond in \(\mathrm{HBr}\). Therefore, option (1) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316270
Least volatile hydrogen halide is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HI}\)
4 \(\mathrm{HBr}\)
Explanation:
Except HF (least volatile), all hydrogen halides are gases. HF is a liquid with boiling point \(19.5^{\circ} \mathrm{C}\). This behaviour is due to association of \(\mathrm{HF}\) molecules through hydrogen bonding. \(\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} \)
CHXI11:THE P-BLOCK ELEMENTS
316271
Among the following, the one that has the highest heat of vaporization is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HBr}\)
4 \(\mathrm{HI}\)
Explanation:
HF shows hydrogen bonding. So high heat of vaporization.
CHXI11:THE P-BLOCK ELEMENTS
316272
The property that correspond to the order \(\mathrm{HI}>\) \(\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\) is
1 Thermal stability
2 Reducing power
3 Ionic character
4 Bond strength
Explanation:
Reducing power and acidic strength \(\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\)
316269
Assertion : \(\mathrm{HBr}\) is a weaker acid than HI. Reason : Bond energy of \(\mathrm{HI}\) is smaller than that of \(\mathrm{HBr}\).
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.
Explanation:
Hydroiodic acid (HI) is a stronger acid than hydrobromic acid \((\mathrm{HBr})\) because the weaker hydrogen-iodine bond in \(\mathrm{HI}\) facilitates easier dissociation, leading to the release of more \(\mathrm{H}^{+}\) ions compared to the stronger hydrogen-bromine bond in \(\mathrm{HBr}\). Therefore, option (1) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316270
Least volatile hydrogen halide is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HI}\)
4 \(\mathrm{HBr}\)
Explanation:
Except HF (least volatile), all hydrogen halides are gases. HF is a liquid with boiling point \(19.5^{\circ} \mathrm{C}\). This behaviour is due to association of \(\mathrm{HF}\) molecules through hydrogen bonding. \(\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} \)
CHXI11:THE P-BLOCK ELEMENTS
316271
Among the following, the one that has the highest heat of vaporization is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HBr}\)
4 \(\mathrm{HI}\)
Explanation:
HF shows hydrogen bonding. So high heat of vaporization.
CHXI11:THE P-BLOCK ELEMENTS
316272
The property that correspond to the order \(\mathrm{HI}>\) \(\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\) is
1 Thermal stability
2 Reducing power
3 Ionic character
4 Bond strength
Explanation:
Reducing power and acidic strength \(\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\)
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI11:THE P-BLOCK ELEMENTS
316269
Assertion : \(\mathrm{HBr}\) is a weaker acid than HI. Reason : Bond energy of \(\mathrm{HI}\) is smaller than that of \(\mathrm{HBr}\).
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.
Explanation:
Hydroiodic acid (HI) is a stronger acid than hydrobromic acid \((\mathrm{HBr})\) because the weaker hydrogen-iodine bond in \(\mathrm{HI}\) facilitates easier dissociation, leading to the release of more \(\mathrm{H}^{+}\) ions compared to the stronger hydrogen-bromine bond in \(\mathrm{HBr}\). Therefore, option (1) is correct.
CHXI11:THE P-BLOCK ELEMENTS
316270
Least volatile hydrogen halide is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HI}\)
4 \(\mathrm{HBr}\)
Explanation:
Except HF (least volatile), all hydrogen halides are gases. HF is a liquid with boiling point \(19.5^{\circ} \mathrm{C}\). This behaviour is due to association of \(\mathrm{HF}\) molecules through hydrogen bonding. \(\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} {\rm{ - - }}\mathop {\rm{H}}\limits^{{\delta ^ + }} - \mathop {\rm{F}}\limits^{{\delta ^ - }} \)
CHXI11:THE P-BLOCK ELEMENTS
316271
Among the following, the one that has the highest heat of vaporization is
1 \(\mathrm{HF}\)
2 \(\mathrm{HCl}\)
3 \(\mathrm{HBr}\)
4 \(\mathrm{HI}\)
Explanation:
HF shows hydrogen bonding. So high heat of vaporization.
CHXI11:THE P-BLOCK ELEMENTS
316272
The property that correspond to the order \(\mathrm{HI}>\) \(\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\) is
1 Thermal stability
2 Reducing power
3 Ionic character
4 Bond strength
Explanation:
Reducing power and acidic strength \(\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}>\mathrm{HF}\)
