Question

You have four solution A,B,C and D.The ph of solution A is 6,B is 9,C is 12 and D is 7.a) identify the most acidic and most basic solution b) arrange the above four solution in the increasing order of H+ ions concentration. c) state the change in colour of pH paper on dipping in solution C and D.

Answer 1

Answer:

a) the most acidic solution is solution A

the most basic solution is solution C

c) Solution C will turn greenish, and solution D will turn red.

Sorry b) I don't know

Answer 2

Answer:

a) The most acidic is A and the most basic is C. b) $C < B < D < A$ is the correct arrangement. c) The pH paper turns greenish-blue on solution C and light green on solution D.

Explanation:

• If the concentration of hydrogen ions is greater than that of water, the solution is termed acidic.
• If the concentration of hydrogen ions is less than that of water, the solution is termed basic.

Solution Part a):

The most acidic solution is A. This is because its pH has the least value. The most basic solution is C. This is because its pH has the highest value.

Solution Part b):

The $H^{+}$ ions concentration is highest in the solution which has the lowest pH value. So, the $H^{+}$ ions concentration in increasing order:

$C < B < D < A$.

Solution Part c):

The solution D is neutral so, the pH paper turns light green. The solution C is basic so, the pH paper turns greenish-blue.