Calculate the weight of nitric acid present in 40ml of solution which completely neutralizes 20ml of 0.01M barium hydroxide assuming complete ionization.
A
0.40g
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B
0.0004g
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C
0.0252g
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D
0.063g
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Solution
The correct option is C0.0252g equation is 2HNO3+Ba(OH)2⇌H2O+Ba(NO3)2 MoleofBa(OH)2=0.01M×0.02l=0.0002mole 1 mole of Ba(OH)2 need 2 moles of HNO3. therefore 0.0002mole will be neutralized by 0.0002×2=0.0004molesHNO3 Weight of 0.004 mole HNO3=mole×molecularweight = 0.0004×63=0.0252g