1 contains replaceable \({{\text{H}}^{\text{ + }}}\) ion
2 gives up a proton
3 accepts \(\mathrm{OH}^{-}\)from water releasing proton
4 combines with proton from water molecule
Explanation:
Conceptual Questions
NCERT Exemplar
CHXI11:THE P-BLOCK ELEMENTS
316101
Boric acid polymerizes due to
1 the presence of hydrogen bonds
2 it's acidic nature
3 it's geometry
4 it's monobasic nature
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316102
Orthoboric acid
1 donate proton to form \(\mathrm{H}_{2} \mathrm{BO}_{3}^{-}\)
2 accept proton of form \(\mathrm{H}_{4} \mathrm{BO}_{3}^{+}\)
3 donate \(\mathrm{OH}^{-}\)to form \(\mathrm{H}_{2} \mathrm{BO}_{2}^{+}\)
4 accept \(\mathrm{OH}^{-}\)to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
Explanation:
\(\mathrm{H}_{3} \mathrm{BO}_{3}\) acts as a Lewis acid and accepts \(\mathrm{OH}\) ions to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
CHXI11:THE P-BLOCK ELEMENTS
316103
Assertion : In water, orthoboric acid behaves as a weak monobasic acid. Reason : In water, orthoboric acid acts as a proton donor.
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:
In water orthoboric acid accepts the hydroxyl ion by leaving proton and behaves as weak monobasic acid. But it cannot release it's own hydrogen as proton. So, option (3) is correct.
1 contains replaceable \({{\text{H}}^{\text{ + }}}\) ion
2 gives up a proton
3 accepts \(\mathrm{OH}^{-}\)from water releasing proton
4 combines with proton from water molecule
Explanation:
Conceptual Questions
NCERT Exemplar
CHXI11:THE P-BLOCK ELEMENTS
316101
Boric acid polymerizes due to
1 the presence of hydrogen bonds
2 it's acidic nature
3 it's geometry
4 it's monobasic nature
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316102
Orthoboric acid
1 donate proton to form \(\mathrm{H}_{2} \mathrm{BO}_{3}^{-}\)
2 accept proton of form \(\mathrm{H}_{4} \mathrm{BO}_{3}^{+}\)
3 donate \(\mathrm{OH}^{-}\)to form \(\mathrm{H}_{2} \mathrm{BO}_{2}^{+}\)
4 accept \(\mathrm{OH}^{-}\)to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
Explanation:
\(\mathrm{H}_{3} \mathrm{BO}_{3}\) acts as a Lewis acid and accepts \(\mathrm{OH}\) ions to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
CHXI11:THE P-BLOCK ELEMENTS
316103
Assertion : In water, orthoboric acid behaves as a weak monobasic acid. Reason : In water, orthoboric acid acts as a proton donor.
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:
In water orthoboric acid accepts the hydroxyl ion by leaving proton and behaves as weak monobasic acid. But it cannot release it's own hydrogen as proton. So, option (3) is correct.
1 contains replaceable \({{\text{H}}^{\text{ + }}}\) ion
2 gives up a proton
3 accepts \(\mathrm{OH}^{-}\)from water releasing proton
4 combines with proton from water molecule
Explanation:
Conceptual Questions
NCERT Exemplar
CHXI11:THE P-BLOCK ELEMENTS
316101
Boric acid polymerizes due to
1 the presence of hydrogen bonds
2 it's acidic nature
3 it's geometry
4 it's monobasic nature
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316102
Orthoboric acid
1 donate proton to form \(\mathrm{H}_{2} \mathrm{BO}_{3}^{-}\)
2 accept proton of form \(\mathrm{H}_{4} \mathrm{BO}_{3}^{+}\)
3 donate \(\mathrm{OH}^{-}\)to form \(\mathrm{H}_{2} \mathrm{BO}_{2}^{+}\)
4 accept \(\mathrm{OH}^{-}\)to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
Explanation:
\(\mathrm{H}_{3} \mathrm{BO}_{3}\) acts as a Lewis acid and accepts \(\mathrm{OH}\) ions to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
CHXI11:THE P-BLOCK ELEMENTS
316103
Assertion : In water, orthoboric acid behaves as a weak monobasic acid. Reason : In water, orthoboric acid acts as a proton donor.
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:
In water orthoboric acid accepts the hydroxyl ion by leaving proton and behaves as weak monobasic acid. But it cannot release it's own hydrogen as proton. So, option (3) is correct.
1 contains replaceable \({{\text{H}}^{\text{ + }}}\) ion
2 gives up a proton
3 accepts \(\mathrm{OH}^{-}\)from water releasing proton
4 combines with proton from water molecule
Explanation:
Conceptual Questions
NCERT Exemplar
CHXI11:THE P-BLOCK ELEMENTS
316101
Boric acid polymerizes due to
1 the presence of hydrogen bonds
2 it's acidic nature
3 it's geometry
4 it's monobasic nature
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316102
Orthoboric acid
1 donate proton to form \(\mathrm{H}_{2} \mathrm{BO}_{3}^{-}\)
2 accept proton of form \(\mathrm{H}_{4} \mathrm{BO}_{3}^{+}\)
3 donate \(\mathrm{OH}^{-}\)to form \(\mathrm{H}_{2} \mathrm{BO}_{2}^{+}\)
4 accept \(\mathrm{OH}^{-}\)to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
Explanation:
\(\mathrm{H}_{3} \mathrm{BO}_{3}\) acts as a Lewis acid and accepts \(\mathrm{OH}\) ions to form \(\left[\mathrm{B}(\mathrm{OH})_{4}\right]^{-}\)
CHXI11:THE P-BLOCK ELEMENTS
316103
Assertion : In water, orthoboric acid behaves as a weak monobasic acid. Reason : In water, orthoboric acid acts as a proton donor.
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:
In water orthoboric acid accepts the hydroxyl ion by leaving proton and behaves as weak monobasic acid. But it cannot release it's own hydrogen as proton. So, option (3) is correct.
