(A) The reaction between oxalic acid $(H_2C_2O_4)$ and $NaOH$ is: $H_2C_2O_4 + 2NaOH \rightarrow Na_2C_2O_4 + 2H_2O$.The concordant volume of $NaOH$ i

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(A) The reaction between oxalic acid $(H_2C_2O_4)$ and $NaOH$ is: $H_2C_2O_4 + 2NaOH \rightarrow Na_2C_2O_4 + 2H_2O$.The concordant volume of $NaOH$ is $9.0 \ mL$.Using the equivalence relation: $n_1 M_1 V_1 = n_2 M_2 V_2$,where $n$ is the n-factor.For oxalic acid,$n_1 = 2$. For $NaOH$,$n_2 = 1$.$2 \times 0.10 \ M \times 5.00 \ mL = 1 \times M_{NaOH} \times 9.0 \ mL$.$M_{NaOH} = \frac{2 \times 0.10 \times 5.00}{9.0} = \frac{1.0}{9.0} \approx 0.11 \ M$.

Class 12 Chemistry Principles Related to Practical Chemistry Titrations

Easy

$5.00 \ mL$ of $0.10 \ M$ oxalic acid solution taken in a conical flask is titrated against $NaOH$ from a burette using phenolphthalein indicator. The volume of $NaOH$ required for the appearance of permanent faint pink color is tabulated below for five experiments. What is the concentration,in molarity,of the $NaOH$ solution?

$Exp. \ No.$ $Vol. \ of \ NaOH \ (mL)$

$1$ $12.5$

$2$ $10.5$

$3$ $9.0$

$4$ $9.0$

$5$ $9.0$

IIT 2020 All IIT

A
$0.11$
B
$0.15$
C
$0.20$
D
$0.25$

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In the titration of $KMnO_{4}$ with $C_{2}O_{4}^{2-}$,which temperature range is not proper? Why?

Easy

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Compounds that should not be used as primary standards in titrimetric analysis are $:$
$A.$ $Na_2Cr_2O_7$
$B.$ Oxalic acid
$C.$ $NaOH$
$D.$ $FeSO_4 \cdot 6H_2O$
$E.$ Sodium tetraborate
Choose the most appropriate answer from the options given below $:$

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$8 \ mL$ of $\frac{N}{10} \ HCl$ are required to neutralize $20 \ mL$ of $Na_2CO_3$ solution in water. The normality of the $Na_2CO_3$ solution is: (in $N$)

Medium

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$A$ solution containing $Na_2CO_3$ and $NaOH$ requires $300 \ mL$ of $0.1 \ N$ $HCl$ using phenolphthalein as an indicator. Methyl orange is then added to the above titrated solution when a further $25 \ mL$ of $0.2 \ N$ $HCl$ is required. The amount of $NaOH$ present in the solution is ................. $g$ $(NaOH = 40, Na_2CO_3 = 106)$.

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Which of the following statements is correct?

Medium

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$Exp. \ No.$	$Vol. \ of \ NaOH \ (mL)$
$1$	$12.5$
$2$	$10.5$
$3$	$9.0$
$4$	$9.0$
$5$	$9.0$

Similar Questions

In the titration of $KMnO_{4}$ with $C_{2}O_{4}^{2-}$,which temperature range is not proper? Why?

Compounds that should not be used as primary standards in titrimetric analysis are $:$$A.$ $Na_2Cr_2O_7$$B.$ Oxalic acid$C.$ $NaOH$$D.$ $FeSO_4 \cdot 6H_2O$$E.$ Sodium tetraborateChoose the most appropriate answer from the options given below $:$

$8 \ mL$ of $\frac{N}{10} \ HCl$ are required to neutralize $20 \ mL$ of $Na_2CO_3$ solution in water. The normality of the $Na_2CO_3$ solution is: (in $N$)

Which of the following statements is correct?

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Compounds that should not be used as primary standards in titrimetric analysis are $:$
$A.$ $Na_2Cr_2O_7$
$B.$ Oxalic acid
$C.$ $NaOH$
$D.$ $FeSO_4 \cdot 6H_2O$
$E.$ Sodium tetraborate
Choose the most appropriate answer from the options given below $:$