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Ionic Equilibria — Chemistry STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryIonic Equilibria2 Marks
Question
Classify the following buffers into different types:
a. $CH _3 COOH + CH _3 COONa$
b. $NH _4 OH + NH _4 Cl$
c. Sodium benzoate + benzoic acid
d. $Cu ( OH )_2+ CuCl _2$
✓

Answer

(a) Acidic buffer $\left( CH _3 COOH + CH _3 COONa \right)$
(b) Basic buffer $\left( NH _4 OH + NH _4 Cl \right)$
(c) Acidic buffer (Sodium benzoate + benzoic acid)
(d) Basic buffer $\left( Cu ( OH )_2+ CuCl _2\right)$
[Note: $Cu ( OH )_2$ being insoluble is not used to prepare a buffer solution.]

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