(C) The $pH$ of human blood is maintained naturally at $7.36-7.42$ by the $(HCO_3^{-} + H_2CO_3)$ buffer system. This buffer system consists of carbon

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Carbonic acid and salt of carbonic acid

(C) The $pH$ of human blood is maintained naturally at $7.36-7.42$ by the $(HCO_3^{-} + H_2CO_3)$ buffer system. This buffer system consists of carbonic acid $(H_2CO_3)$ and its conjugate base,the bicarbonate ion $(HCO_3^{-})$.

Class 11 Chemistry 6-2.Equilibrium-II (Ionic Equilibrium)Buffer solution

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Which of the following buffers is used to maintain the $pH$ of human blood naturally?

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A
Hydrogen cyanide and sodium cyanide
B
Copper hydroxide and copper chloride
C
Carbonic acid and salt of carbonic acid
D
Ammonium hydroxide and ammonium chloride

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6-2.Equilibrium-II (Ionic Equilibrium)

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Buffer solution

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$A$ buffer solution is prepared by mixing $0.01 \ M$ $HCN$ and $0.02 \ M$ $NaCN$. If $K_{a}$ for $HCN$ is $6.6 \times 10^{-10}$,what is the concentration of $H^{+}$ ions in the solution?

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When an acid or alkali is mixed with a buffer solution,the $pH$ of the buffer solution:

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The $pH$ of a buffer solution made by mixing $25 \ mL$ of $0.02 \ M$ $NH_4OH$ and $25 \ mL$ of $0.2 \ M$ $NH_4Cl$ at $25^{\circ}C$ is ($pK_b$ of $NH_4OH = 4.8$).

DifficultAP EAMCET 2013

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What is the total number of buffers formed during the titration of $H_3PO_4$ with $NaOH$?

Medium

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Study the following table:
Buffer Solution Volume (in $mL$) of $0.1 \ M$ Weak acid Volume (in $mL$) of $0.1 \ M$ sodium salt of weak acid
$I$ $4.0$ $4.0$
$II$ $4.0$ $40.0$
$III$ $40.0$ $4.0$
$IV$ $0.1$ $10.0$

Which of the two sets of buffer solutions have the least $pH$?

Buffer Solution	Volume (in $mL$) of $0.1 \ M$ Weak acid	Volume (in $mL$) of $0.1 \ M$ sodium salt of weak acid
$I$	$4.0$	$4.0$
$II$	$4.0$	$40.0$
$III$	$40.0$	$4.0$
$IV$	$0.1$	$10.0$

DifficultTS EAMCET 2004

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Which of the following buffers is used to maintain the $pH$ of human blood naturally?

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$A$ buffer solution is prepared by mixing $0.01 \ M$ $HCN$ and $0.02 \ M$ $NaCN$. If $K_{a}$ for $HCN$ is $6.6 \times 10^{-10}$,what is the concentration of $H^{+}$ ions in the solution?

When an acid or alkali is mixed with a buffer solution,the $pH$ of the buffer solution:

The $pH$ of a buffer solution made by mixing $25 \ mL$ of $0.02 \ M$ $NH_4OH$ and $25 \ mL$ of $0.2 \ M$ $NH_4Cl$ at $25^{\circ}C$ is ($pK_b$ of $NH_4OH = 4.8$).

What is the total number of buffers formed during the titration of $H_3PO_4$ with $NaOH$?

Study the following table:Buffer SolutionVolume (in $mL$) of $0.1 \ M$ Weak acidVolume (in $mL$) of $0.1 \ M$ sodium salt of weak acid$I$$4.0$$4.0$$II$$4.0$$40.0$$III$$40.0$$4.0$$IV$$0.1$$10.0$Which of the two sets of buffer solutions have the least $pH$?

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Study the following table:
Buffer Solution Volume (in $mL$) of $0.1 \ M$ Weak acid Volume (in $mL$) of $0.1 \ M$ sodium salt of weak acid
$I$ $4.0$ $4.0$
$II$ $4.0$ $40.0$
$III$ $40.0$ $4.0$
$IV$ $0.1$ $10.0$

Which of the two sets of buffer solutions have the least $pH$?