QUESTION ON DILUTION AND MIXING OF TWO LIQUIDS.

Question

what volume (in ml)of 0.2M H2SO4 solution should be mixed with the 40ml of 0.1M NaOH SOLUTION such that the resulting solution has concentration of H2SO4  as (6/55)M

Answer 1

Solution: We know that resultant molarity is given by

Resultant Molarity = (M₁V₁+M₂V₂)/(V₁+V₂)

we have M₁ = 0.1, V₁ = 40ml = 0.04 litre

M₂ = 0.2, V₂ = ?

Now putting the values in above formula we get,

(0.1x0.04 + 0.2xV₂)/0.04+V₂ = 6/55

=> 0.004+0.2V₂ = (0.24+6V₂)/55

=> 0.22+11V₂ = 0.24+6V₂

=> 5V₂ = 0.02

=> V₂ = 0.004

Hence, V₂ = 0.004 litre or 4ml

Comments

your answer is
wrong, answer is 70 ml