# NEET Chemistry Redox Reactions Questions Solved

25 mL of a solution containing HCf and H2SO4 required 10 mL of a 1 N NaOH solution for neutralization. 20 mL of the same acid mixture on being treated with an excess of AgNO3 gives 0.1425 g of AgCf. The normality of the HC and the normality of the H2SO4 are respectively

(1) 0.40 N and 0.05 N

(2) 0.05 N and 0.25 N

(3) 0.50 N and 0.25 N

(4) 0.40 N and 0.5 N

(2) Let normality of HCl is N1 and H2SO4 is N2.

∴ M.e. of HCl + M.e. of H2SO4 = M.e of NaOH

25 × N1 + 25 × N2 = 10 × 1 ... (1)

N1 + N2 = 0.4 ... (1)

BY POAC

Moles of Cl = moles of AgCl

$\frac{20\text{\hspace{0.17em}}×{\text{\hspace{0.17em}N}}_{\text{1}}}{1000}\text{\hspace{0.17em}}=\text{\hspace{0.17em}}\frac{0.1435}{143.05}\text{\hspace{0.17em}}=\text{\hspace{0.17em}}{10}^{-3}$

N1 = 0.05 N

N2 = 0.35 N

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