200 g of 25% sulphuric acid solution was added to 300 g of 40% sulphur...
Calculation of concentration of acid in mixture
To determine the concentration of the acid in the mixture, we need to use the formula:
% concentration = (amount of solute / amount of solution) x 100%
Step 1: Calculate the amount of acid in the 25% solution
The 25% sulphuric acid solution contains:
Amount of acid = 25% x 200g = 50g
Step 2: Calculate the amount of acid in the 40% solution
The 40% sulphuric acid solution contains:
Amount of acid = 40% x 300g = 120g
Step 3: Calculate the total amount of acid in the mixture
The total amount of acid in the mixture is:
Total amount of acid = 50g + 120g = 170g
Step 4: Calculate the concentration of acid in the mixture
The total amount of solution in the mixture is:
Total amount of solution = 200g + 300g = 500g
Therefore, the concentration of acid in the mixture is:
% concentration = (170g / 500g) x 100% = 34%
Answer
The concentration of the acid in the mixture is 34% (option D).