Question

A scientist puts 60 litres of pure HCI solution in a container. He removes 15 litres of the
solution from the container and replaces it with an equal quantity of water. Thereafter he
again renoves 15 L of the solution in the container and replaces it with an equal quantity of
water. What will be the concentration of acid of the solution in the container now? If he
repeats this process till the concentration of acid of the solution in the container falls below
30%, then how many times from the beginning does he carry out the process of replacing the
solution in the container with water?​

Answer 1

Answer:

litres of the

solution from the container and replaces it with an equal quantity of water. Thereafter he

again renoves 15 L of the solution in the container and replaces it with an equal quantity of

water. What will be the concentration of acid of the solution in the container now? If he

repeats this process till the concentration of acid of the solution in the container falls below

30%, then how many times from the beginning does he carry out the process of replacing the

solution in the container with water