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(C) buffer solution is formed by a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid.$0.4 \, mol \, HNO_2$ (weak aci

Vedclass · Accepted Answer

$0.4 \, mol \, HNO_2$ and $0.2 \, mol \, NaOH$

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(C) buffer solution is formed by a mixture of a weak acid and its conjugate base or a weak base and its conjugate acid.$0.4 \, mol \, HNO_2$ (weak acid) reacts with $0.2 \, mol \, NaOH$ (strong base) to produce $0.2 \, mol \, NaNO_2$ (conjugate base) and $0.2 \, mol \, HNO_2$ remains.Since the final mixture contains both the weak acid $(HNO_2)$ and its conjugate base $(NO_2^-)$,it acts as an acidic buffer.

Which mixture forms a buffer when dissolved in $1 \, L$ of water?

Similar Questions

Calculate $[H^{+}]$ of $0.2 \ M$ $HCN$ in $1 \ M$ $KCN$ solution. Given $K_{a(HCN)} = 4 \times 10^{-10}$.

If the $pH$ of a buffer solution containing $0.1 \ M$ of monoacidic base and $0.01 \ M$ of its salt is $10.5$,the $pK_a$ of the conjugate acid is: (in $.5$)

An acidic buffer is obtained on mixing

$pH$ of a mixture of $1 \ M \ HA$ $(pK_a = 4.2)$ and $1 \ M \ NaA$ is $4.5$. In $300 \ mL$ of buffer,the volume of $HA$ is $....... \ mL$ $[\log \ 2 = 0.3]$

$A$ buffer solution is formed by a weak acid and its salt with a strong base,or a weak base and its salt with a strong acid. In which of the following pairs is this characteristic found?

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