In the titration of potassium permanganate $(KMnO_4)$ against ferrous ammonium sulphate $(FAS)$ solution,dilute sulphuric acid $(H_2SO_4)$ but not nitric acid $(HNO_3)$ is used to maintain an acidic medium,because:
- AIt is difficult to identify the end point
- BNitric acid does not act as an indicator
- CNitric acid itself is an oxidizing agent
- DNitric acid is a weaker acid than sulphuric acid
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$20 \ mL$ of $HCl$ solution requires $19.85 \ mL$ of $0.01 \ M$ $NaOH$ solution for complete neutralization. The molarity of $HCl$ solution is
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View Solution$5.00 \ mL$ 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?
$Exp. \ No.$ $Vol. \ of \ NaOH \ (mL)$ $1$ $12.5$ $2$ $10.5$ $3$ $9.0$ $4$ $9.0$ $5$ $9.0$
| $Exp. \ No.$ | $Vol. \ of \ NaOH \ (mL)$ |
| $1$ | $12.5$ |
| $2$ | $10.5$ |
| $3$ | $9.0$ |
| $4$ | $9.0$ |
| $5$ | $9.0$ |
An aqueous solution of $6.3 \ g$ of oxalic acid dihydrate is made up to $250 \ mL$. The volume of $0.1 \ N \ NaOH$ required to completely neutralise $10 \ mL$ of this solution is.......$mL$
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