1 answer

Which of the following aqueous solutions are good buffer systems? 0.21 M hydroiodic acid 0.23 M...

Question:

Which of the following aqueous solutions are good buffer systems? 0.21 M hydroiodic acid 0.23 M potassium iodide 0.13 M hypoc

Which of the following aqueous solutions are good buffer systems? 0.21 M hydroiodic acid 0.23 M potassium iodide 0.13 M hypochlorous acid + 0.12 M sodium hypochlorite 0.37 M hydrofluoric acid 0.26 M sodium fluoride 0.33 M ammonium bromide 0.3s M ammonia 0.13 M sodium hydroxide 0.28M sodium bromide

Answers

acidic buffer is formed by weak acid and salt of weak acid

basic buffer is formed by weak base and salt of weak base

Option 1:

HI is strong acid and KI is neutral salt.

They will not form buffer

Option 2:

HClO is weak acid.

NaClO is its conjugate base.

They form acidic buffer

Option 3:

HF is weak acid.

NaF is its conjugate base.

They form acidic buffer

Option 4:

NH3 is weak base.

NH4+ is its conjugate acid.

They form basic buffer.

Option 5:

NaOH is strong base.

NaBr is neutral salt.

They will not form buffer

Answer: option 2, 3, 4

.

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