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Volume of Gases and Number of Moles

Calculate vol...

Question

Calculate volume of $0.4 M K M n O_{4}$ required to react with following in acidic medium.
$K H C_{2} O_{4} (1 m o l) + H_{2} C_{2} O_{4} (2 m o l)$

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Solution

$K H C_{2} O_{4} (1 m o l) + H_{2} C_{2} O_{4} (2 m o l)$
$↓$ $↓$
reg. leg. $N a O H$ Reg 2eq $N a O H$
$∴$ mass of $N a O H$ reg $= 1 \times 1 + 2 \times 2$
$= 5 m o l$
$∴$ Volume $= \frac{5 \times 10}{04} = 12.5 L$

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