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6.2. Equilibrium - II (icon Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.2. Equilibrium - II (icon Equilibrium)1 Mark
MCQ
What is the $pH$ value of $M\, H_2SO_4$ ?
  • A
    $0$
  • B
    $-0.213$
  • C
    $-2$
  • ✓
    $-0.3010$
✓

Answer

Correct option: D.
$-0.3010$
d
$\mathop {{H_2}S{O_4}}\limits_{1\,M}  \to \mathop {2{H^ + }}\limits_{2\,M}  + \mathop {SO_4^{2 - }}\limits_{1\,M} $

$[{H^ + }] = 2$

$pH =  - \log [{H^ + }] =  - \log \,2$

$ =  - 0.3010\,\,\,[\because \,\log \,2 = 0.3010]$

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