Water in case of HCl acts as a/an ___________, in case of ammonia acts as a/an ________a)base, baseb)base, acidc)acid, based)acid, acidCorrect answer is option 'B'. Can you explain this answer?

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ACT Exam > ACT Questions > Water in case of HCl acts as a/an ___________...

Water in case of HCl acts as a/an ___________, in case of ammonia acts as a/an ________

a)
base, base
b)
base, acid
c)
acid, base
d)
acid, acid

Correct answer is option 'B'. Can you explain this answer?

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Water in case of HCl acts as a/an ___________, in case of ammonia acts...

Water acts as a base in the presence of hydrochloric acid and acts as an acid in the presence of ammonia. According to bronsted, acid is a chemical substance that can donate a Proton and base can accept a Proton from other substances.

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Water in case of HCl acts as a/an ___________, in case of ammonia acts...

Water as a base in case of HCl:
- When water reacts with HCl (hydrochloric acid), it acts as a base.
- The water molecule accepts a proton (H+) from the HCl molecule, forming H3O+ (hydronium ion) and Cl- (chloride ion).
- This reaction can be represented as: HCl + H2O → H3O+ + Cl-
- Water, in this case, acts as a proton acceptor, making it a base.

Water as an acid in case of ammonia:
- When water reacts with ammonia (NH3), it acts as an acid.
- The water molecule donates a proton (H+) to the ammonia molecule, forming NH4+ (ammonium ion) and OH- (hydroxide ion).
- This reaction can be represented as: NH3 + H2O → NH4+ + OH-
- Water, in this case, acts as a proton donor, making it an acid.

Therefore, water can act as both a base and an acid depending on the substance it is reacting with. In the case of HCl, water acts as a base by accepting a proton, while in the case of ammonia, water acts as an acid by donating a proton.

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