The graph given below depicts a neutralization reaction (acid + alkali → salt + water). The pH of a solution changes as we add excess of acid to an alkali.
Which letter denotes the area of the graph where both acid and salt are present?
(A) A
(B) B
(C) C
(D) D
Answer
When both acid and salt are present, the pH of the solution becomes less than 7 .
From the graph, the pH is less than 7 at only part D
So, the correct answer is (D)
Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
