Question

35.Two aqueous solutions P and Q have pH of 5 and 13 respectively. The
correct inference is that: *
(a) solution P is of HCl and Q is of NH4OH
(b) solution Pis of CH3COOH and Q is of Ca(OH)2
(c) solution P is of HNO3 and O is of NH4OH
(d) solution Pis of CH3COOH and Q is of NaOH​

Answer 1

Answer:

(d) solution P CH3COOH

Solution Q NaOH

Answer 2

Answer:

Aqueous solution P has pH of 5 and it is CH3COOH while pH of solution Q is 13 and it is NaOH. So option (d) is correct.

Explanation:

pH: pH is the negative logarithm of hydrogen ion concentration. It is a scale  which tells whether a solution is acidic, basic or neutral with the help of numerical value. The range of values on the scale is from 1 to 14. 1 indicates strong acid. A neutral solution is denoted by pH 7. For a basic solution, pH values range 7.1 to 14.

• In the given question, pH of aqueous solution P is 5 which is near to neutral pH value of 7, so it is weak acid. Ethanoic acid, CH3COOH is an example of weak acid.

• The pH value of solution Q is 13 which is very close to the pH value of 14, which indicate a strong base. So, solution Q is Sodium hydroxide ,NaOH.