1 g of a monobasic acid H (having pK_a = 5) 5) in 100g water lower the freezing point by 0.155K. If 0.45 g of same acid required 15 ml M/5 NaOH solution for complete neutralization (K_f , H_2O = 1.86 K Kg mol^{-1} , density of H_2O is 1 g/ml) , then which of the following option is incorrect reagrding above question

Correct Answer is : 10 g of acid HB is hypotonic with 0.625 g urea at the same temperature and same volume of H2O

degree of ionization of acid is 0.25

the pH of the resultant solution at the end point of neutralization is greater than 7

normal molecular mass of acid is 150

10 g of acid HB is hypotonic with 0.625 g urea at the same temperature and same volume of H_2O

JEE Mains Model Paper 15

Question : 56 of 90

Marks: +1, -0

1 g of a monobasic acid H (having pKa = 5) 5) in 100g water lower the freezing point by 0.155K. If 0.45 g of same acid required 15 ml

NaOH solution for complete neutralization
(Kf , H2O = 1.86 K Kg mol−1 , density of H2O is 1 g/ml) , then which of the following option is incorrect reagrding above question

degree of ionization of acid is 0.25
the pH of the resultant solution at the end point of neutralization is greater than 7
normal molecular mass of acid is 150
10 g of acid HB is hypotonic with 0.625 g urea at the same temperature and same volume of H2O

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