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Diano4ka-milaya [45]
3 years ago
13

Which of the following are conjugate acid/base pairs? Select all that apply.

Chemistry
1 answer:
Setler79 [48]3 years ago
7 0

Answer: HCOOH and HCOO^-

HNO_3 and NO_3-^-

H_2SO_4 and SO_4^{2-}

H_2CO_3 and CO_3^{2-}

Explanation:

According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.

For the given chemical equations:

1. HCOOH(aq)\rightarrow HCOO^-(aq.)+H^+(aq.)

Here, HCOOH is loosing a proton, thus it is considered as an acid and after losing a proton, it forms HCOO^- which is a conjugate base.

2. HNO_3(aq)\rightarrow NO_3^-(aq.)+H^+(aq.)

Here, HNO_3 is loosing a proton, thus it is considered as an acid and after losing a proton, it forms NO_3^- which is a conjugate base.

3. H_2SO_4(aq)\rightarrow SO_4^{2-}(aq.)+2H^+(aq.)

Here, H_2SO_4 is loosing a proton, thus it is considered as an acid and after losing a proton, it forms SO_4^{2-} which is a conjugate base.

4. NaCl and NaOh are not conjugate acid/ base pairs.

5. H_2CO_3(aq)\rightarrow CO_3^{2-}(aq.)+2H^+(aq.)

Here, H_2CO_3 is loosing a proton, thus it is considered as an acid and after losing a proton, it forms CO_3^{2-} which is a conjugate base.

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