COMEDK · Chemistry · 8. Ionic Equilibrium
\(5 \mathrm{~L}\) of \(\mathrm{NaOH}\) solution of \(\mathrm{pH} 12\) contains
- A \(200 \mathrm{~g}\)
- B \(0.2 \mathrm{~g}\)
- C \(20 \mathrm{~g}\)
- D \(2 \mathrm{~g}\)
Answer & Solution
Correct Answer
(D) \(2 \mathrm{~g}\)
Step-by-step Solution
Detailed explanation
\(M_{1}=5 \mathrm{~L}\) and pH \(=12\) \[ \mathrm{pOH}=14-\mathrm{pH}=14-12=2 \] \({[\mathrm{OH}]=10^{-\text {pOH }}=10^{-2} }\) \(\therefore\) Mass of \(\mathrm{NaOH}=\) moles \(\times\) molar mass
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