Which of the following may be added to one litre of water to act as a buffer?

  • A
    $1 \text{ mole of } HC_2H_3O_2 \text{ and } 0.5 \text{ mole of } NaOH$
  • B
    $1 \text{ mole of } NH_4Cl \text{ and } 1 \text{ mole of } HCl$
  • C
    $1 \text{ mole of } NH_4OH \text{ and } 1 \text{ mole of } NaOH$
  • D
    $1 \text{ mole of } HC_2H_3O_2 \text{ and } 1 \text{ mole of } HCl$

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Similar Questions

$A$ buffer solution is prepared by mixing $10 \ mL$ of $1.0 \ M$ acetic acid and $20 \ mL$ of $0.5 \ M$ sodium acetate and then diluted to $100 \ mL$ with distilled water. The $pH$ of the buffer solution is ($pK_a$ of acetic acid is $4.76$).

$0.1 \ M, 60 \ mL$ $NH_4Cl$ $(K_h = 10^{-9})$ is titrated against $0.2 \ M$ $NaOH$. What is the $pH$ at the $\frac{1}{3}$ equivalence point?

An acidic buffer is obtained on mixing

The dissociation constant of acetic acid is $x \times 10^{-5}$. When $25 \ mL$ of $0.2 \ M \ CH_3COONa$ solution is mixed with $25 \ mL$ of $0.02 \ M \ CH_3COOH$ solution,the $pH$ of the resultant solution is found to be equal to $5$. The value of $x$ is $..........$.

An acidic buffer solution can be prepared by mixing a solution of:

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