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In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.
Assertion (A): Increasing order of acidity of hydrogen halides is HF < hci="" />< hbr="" />< />
Reason (R): While comparing acids formed by the elements belonging to the same group of periodic table. H-A bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.
- a)Both A and R are true and R is the correct explanation of A.
- b)Both A and R are true but R is not the correct explanation of A.
- c)A is true but R is false.
- d)Both A and R are false.
Correct answer is option 'A'. Can you explain this answer?
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In the following question, a statement of Assertion (A) followed by a...
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
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As, H−A bond strength is a more important factor in determining acidity than its polar nature. As the size of A increases down the group, H−A bond strength decreases.
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In the following question, a statement of Assertion (A) followed by a...
Assertion: Increasing order of acidity of hydrogen halides is HF.
Reason: While comparing acids formed by the elements belonging to the same group of periodic table, H-A bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.
Explanation:
To understand the assertion and reason given in the question, let's first analyze the factors that determine the acidity of hydrogen halides.
1. Electronegativity: Electronegativity is the ability of an atom to attract electrons towards itself. In the case of hydrogen halides, the acidity increases with increasing electronegativity of the halogen atom. This is because the more electronegative the halogen atom, the more it can stabilize the negative charge on the conjugate base after losing a proton.
2. Bond Strength: The strength of the bond between hydrogen and the halogen atom also plays a role in determining acidity. A stronger bond is harder to break, making it less likely for the hydrogen atom to dissociate as a proton, resulting in a weaker acid.
3. Polar Nature of Bond: The polarity of the bond between hydrogen and the halogen atom affects the ease with which the hydrogen atom can dissociate as a proton. A more polar bond allows for better separation of charges, making it easier for the hydrogen atom to dissociate, resulting in a stronger acid.
Explanation of the Reason:
The reason states that while comparing acids formed by elements belonging to the same group of the periodic table, the bond strength between hydrogen and the element is a more important factor in determining acidity than the polar nature of the bond. This is because the difference in electronegativity between the elements in the same group is usually not significant.
Explanation of the Assertion:
The assertion states that the increasing order of acidity of hydrogen halides is HF. This is in accordance with the factors mentioned above. Fluorine (F) is the most electronegative element among the halogens, which makes HF the strongest acid among the hydrogen halides. The bond between hydrogen and fluorine is also relatively weaker compared to the other halogens, further contributing to the higher acidity of HF.
Conclusion:
Both the assertion and the reason are true, and the reason is the correct explanation of the assertion. The acidity of hydrogen halides increases with increasing electronegativity of the halogen atom and decreasing bond strength between hydrogen and the halogen atom. In the case of hydrogen halides, HF is the strongest acid due to the combination of high electronegativity of fluorine and weak H-F bond strength.
Reason: While comparing acids formed by the elements belonging to the same group of periodic table, H-A bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.
Explanation:
To understand the assertion and reason given in the question, let's first analyze the factors that determine the acidity of hydrogen halides.
1. Electronegativity: Electronegativity is the ability of an atom to attract electrons towards itself. In the case of hydrogen halides, the acidity increases with increasing electronegativity of the halogen atom. This is because the more electronegative the halogen atom, the more it can stabilize the negative charge on the conjugate base after losing a proton.
2. Bond Strength: The strength of the bond between hydrogen and the halogen atom also plays a role in determining acidity. A stronger bond is harder to break, making it less likely for the hydrogen atom to dissociate as a proton, resulting in a weaker acid.
3. Polar Nature of Bond: The polarity of the bond between hydrogen and the halogen atom affects the ease with which the hydrogen atom can dissociate as a proton. A more polar bond allows for better separation of charges, making it easier for the hydrogen atom to dissociate, resulting in a stronger acid.
Explanation of the Reason:
The reason states that while comparing acids formed by elements belonging to the same group of the periodic table, the bond strength between hydrogen and the element is a more important factor in determining acidity than the polar nature of the bond. This is because the difference in electronegativity between the elements in the same group is usually not significant.
Explanation of the Assertion:
The assertion states that the increasing order of acidity of hydrogen halides is HF. This is in accordance with the factors mentioned above. Fluorine (F) is the most electronegative element among the halogens, which makes HF the strongest acid among the hydrogen halides. The bond between hydrogen and fluorine is also relatively weaker compared to the other halogens, further contributing to the higher acidity of HF.
Conclusion:
Both the assertion and the reason are true, and the reason is the correct explanation of the assertion. The acidity of hydrogen halides increases with increasing electronegativity of the halogen atom and decreasing bond strength between hydrogen and the halogen atom. In the case of hydrogen halides, HF is the strongest acid due to the combination of high electronegativity of fluorine and weak H-F bond strength.
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In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.Assertion (A): Increasing order of acidity of hydrogen halides is HF Reason (R): While comparing acids formed by the elements belonging to the same group of periodic table. H-A bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)Both A and R are false.Correct answer is option 'A'. Can you explain this answer?
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In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.Assertion (A): Increasing order of acidity of hydrogen halides is HF Reason (R): While comparing acids formed by the elements belonging to the same group of periodic table. H-A bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)Both A and R are false.Correct answer is option 'A'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.Assertion (A): Increasing order of acidity of hydrogen halides is HF Reason (R): While comparing acids formed by the elements belonging to the same group of periodic table. H-A bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)Both A and R are false.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.Assertion (A): Increasing order of acidity of hydrogen halides is HF Reason (R): While comparing acids formed by the elements belonging to the same group of periodic table. H-A bond strength is a more important factor in determining acidity of an acid than the polar nature of the bond.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)Both A and R are false.Correct answer is option 'A'. Can you explain this answer?.
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