A buffer solution can be prepared from a mixt | vedclass

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Question

(D) The correct answer is $D$.$A$ buffer solution is prepared by mixing a weak acid with its conjugate base (salt of a strong base) or a weak base wit

Vedclass · Accepted Answer

$A$ and $C$ both

Vedclass · Answer

(D) The correct answer is $D$.$A$ buffer solution is prepared by mixing a weak acid with its conjugate base (salt of a strong base) or a weak base with its conjugate acid (salt of a strong acid).$1$. Sodium acetate $(CH_3COONa)$ and acetic acid $(CH_3COOH)$ form an acidic buffer because acetic acid is a weak acid and sodium acetate is its salt with a strong base $(NaOH)$.$2$. Ammonia $(NH_3)$ and ammonium chloride $(NH_4Cl)$ form a basic buffer because ammonia is a weak base and ammonium chloride is its salt with a strong acid $(HCl)$.$3$. Sodium acetate and hydrochloric acid $(HCl)$ react to form acetic acid and sodium chloride,which does not constitute a buffer system in the required proportions.Therefore,both $A$ and $C$ are correct.

$A$ buffer solution can be prepared from a mixture of

Similar Questions

How many $mL$ of $0.2 \, M \, KCN$ should be mixed with $200 \, mL$ of $0.1 \, M \, HCN$ so as to make a mixture of $pH = 3$ ($pK_a$ for $HCN = 6$)?

Assertion : Buffer system of carbonic acid and sodium bicarbonate is used for the precipitation of hydroxides of third group elements.
Reason : It maintains the $pH$ to a constant value,about $7.4.$

Give the importance of buffer solution.

$A$ certain acidic solution contains equal concentrations of $X^-$ and $HX$. If $K_b$ for $X^-$ is $10^{-10}$,then the $pH$ of the buffer is equal to:

Calculate the $pH$ of a buffer solution prepared by mixing $30 \ mL$ of $0.1 \ M$ $NaOH$ and $100 \ mL$ of $0.1 \ M$ $CH_3COOH$. (Given: $pK_a$ of $CH_3COOH = 4.76$)

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