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1. What is a Bronstead Lowery base? 2. What is the conjugate acid of NH3? 3. What is an amphoteric compound? , If the concent
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Answer #1

1.A Bronsted-Lowry base is a solution that behaves as a proton acceptor, and these protons are in the form of a hydrogen (H+) ion.

  • Example : Reaction between water and ammonia

H2O + NH3 = OH- + NH4+

Ammonia is the Bronsted-Lowry base because it is the proton acceptor - it accepts a hydrogen atom from water.

2. Conjugate acid of NH3 is NH4+ because a conjugate acid which accepts the H+.

3.Amphoteric compound: An amphoteric compound is a molecule or ion that can react both as an acid and as a base. Al2O3 is an example of an amphoteric oxide.

4.Given [H3O+]=4.2X10-6 M

pH= -log[H3O+]

= - log(4.2x10-6)

pH= 5.376 M

5. Buffer: A buffer is an aqueous solution of either a weak acid and its conjugate base or a weak base and its conjugate acid.

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