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  4. What will be normality of the resultant solution when text500 textml 1N H text2 textSO text4 text, text300 textml 1N HCl and text200 textml 5N HNO3 are mixed togather and then volume was made text2000 textml by adding some water?

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Q. What will be normality of the resultant solution when $\text{500 } \, \text{ml 1N H}_{\text{2}}\text{SO}_{\text{4}}\text{,}$ $\text{300 } \, \text{ml 1N HCl}$ and $\text{200 } \, \text{ml 5N HNO}_{3}$ are mixed togather and then volume was made $\text{2000 } \, \text{ml}$ by adding some water?

NTA AbhyasNTA Abhyas 2020Some Basic Concepts of Chemistry

Solution:

$\underset{ \, \, N_{1} V_{1} \, \, \, + \, \, N_{2} V_{2} \, + \, \, \, N_{3} V_{3} \, \, \, = \, N \, \times \, 2000 \, \, ml \, \, \, }{H_{2} SO_{4} \, HCl \, \, \, HNO_{3} \, Total \, volume}$

$N=\frac{N_{1} V_{1} + N_{2} V_{2} + N_{3} V_{3}}{2000}$

$=\frac{500 \times 1 + 300 \times 1 + 200 \times 5}{2000}$

$N=\frac{500 + 300 + 1000}{2000}=\frac{1800}{2000}=0.9 \, N$