Question

Which of the following will have the highest $pH$ ?

• A. Saturated solution of NaOH
• B. 1 M HCl solution
• C. Human saliva
• D. Lemon juice

Answer 1

Answer: (A)

(a) For, saturated solution of $NaOH,pH=15$
(b) $1MHClpH\propto 0$
(c) Human saliva $pH=6.4$
(d) Lemon juice $pH=2.2$