Q4 / 160 · AP EAMCET 2020 (17 Sep Shift 2) · Chemistry

Which of the following will have the highest \(\mathrm{pH}\) ?

  • Correct answer
    A
    Saturated solution of \(\mathrm{NaOH}\)
  • B
    \(1 \mathrm{M} \mathrm{HCl}\) solution
  • C
    Human saliva
  • D
    Lemon juice

Solution

(a) For, saturated solution of \(\mathrm{NaOH}, \mathrm{pH} \sim 15\) (b) \(1 \mathrm{M} \mathrm{HCl} \quad \mathrm{pH} \simeq 0\) (c) Human saliva \(\quad \mathrm{pH}=6.4\) (d) Lemon juice \(\quad \mathrm{pH} \simeq 2.2\) Hence, option (a) is correct.

Hence, the correct answer is option: 'A'.

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