How many grams of dibasic acid (mol.wt.200) should be present in 100 mL.

How many grams of dibasic acid (mol.wt.200) should be present in 100 mL. of an aqueous solution to give decinormal strength

Options

(a) 1 g
(b) 10 g
(c) 2 g
(d) 20 g

Correct Answer:

1 g

Explanation:

Normality = Number of g. equivalents of solute / volume of solution (L).
Number of equivalents = Weight / Equivalent weight.
For dibasic acid, equivalent weight = molecular wt/2 = 200/2 = 100.
Volume of solution = 100 mL = 0.1 L. Normality = 0.1 N.
Weight of solute = equivalent weight ⨯ normality ⨯ volume of solution (L) = 100⨯ 0.1 ⨯ 0.1 = 1 g.

admin:

Related Questions

  1. Electric configuration of chalcogens in their outermost orbit is
  2. The molecular of CO₂ has angle 180°.It can be explained on the basis of
  3. According to Bohr’s theory, the angular momentum of electron in 5th orbit is
  4. Which of the following glass is used in making wind screen of automobiles
  5. Bauxite is concentrated by