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Citrus2011 [14]
3 years ago
12

Which molecule is amphoteric? A) NH4+ B )H2O C )H2CO3− D )H2SO4

Chemistry
2 answers:
fiasKO [112]3 years ago
5 0

Answer: B ) H_2O]

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

Amphoteric substances are substances which can act as both acids and bases and thus can accept and donate H^+ ions.

H_2O\rightarrow H^++OH^_

Here water acts as an acid as it donates H^+ ions.

H_2O+H^+\rightarrow H_3O^+

Here water acts as a base as it accepts H^+ ions.

Maslowich3 years ago
4 0
The answer is letter choice B



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As per Brønsted-Lowry concept of acids and bases, chemical species which donate proton are called Brønsted-Lowry acids.

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