Question

a) Solution A contains 20g of alkali in 250cm3 of water and solution B contains 10g of alkali in 500cm3 of water. Which one is more concentrated?

Answer 1

Answer: A is more concentrated than B

Explanation:

To find the concentration of the solution we need to find from the given values of mass and volume about the amount of concentration.

By using the formulae of concentration from mass which is mass is the product of concentration and volume .

Thus, we know that if concentration (C) , mass(M) and volume(V) .

Then, C=M/V

Concentration of solution A will be :-

Given data 20g alkali and 250cc water.

So, CA=20/250

CA=0.08.

Concentration of solution B will be

Given data 10g alkali and 500cc water.

So, CB=10/500

CB=0.02.

Since  CA>CB

Hence proved!