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Ionic Equilibrum question

2019 · Q110
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Ionic Equilibrum question

2019 · Q110

NEETChemistryIonic EquilibrumMCQ+4 / −1
Which will make basic buffer?
  1. A
    100 mL of 0.1 M HCl + 200 mL of 0.1 M NH4OH
  2. B
    100 mL of 0.1 M HCl + 100 mL of 0.1 M NHOH
  3. C
    50 mL of 0.1 M NaOH + 25 mL of 0.1 M CH3COOH
  4. D
    100 mL of 0.1 M CH3COOH + 100 mL of 0.1 M NaOH
View written solutionFree

Correct answer: A

Basic buffer is mixture of weak base and salt of weak base with strong acid.

milli mole of HCl = 100 × 0.1 = 10 milli mole

milli mole of NH4OH = 200 × 0.1 = 20 milli mole
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HCl+NH4OH$ \to $NH4Cl+H2O
10200
020 - 10 = 1010


Here in the final solution 10 milli mole weak base NH4OH and 10 milli mole salt of weak base and strong acid NH4Cl present. So it is a basic buffer.
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