Advertisements
Advertisements
प्रश्न
The pH of 10−5 M KOH solution will be ____________.
विकल्प
9
5
19
none of these
उत्तर
The pH of 10−5 M KOH solution will be 9.
Explanation:
\[\ce{\underset{10^{-5} m}{KOH} -> \underset{10^{-5} m}{K^+} + \underset{10^{-5} m}{OH^-}}\]
[OH–] = 10−5 M
pH = 14 – pOH
pH = 14 – (– log [OH–])
= 14 + log [OH–]
= 14 + log 10−5
= 14 – 5
= 9
APPEARS IN
संबंधित प्रश्न
The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8 respectively. Calculate corresponding hydrogen ion concentration in each.
Which of the following when dissolved in water results in neutral solution?
Calculate the pH of 1.5 × 10−3 M solution of Ba(OH)2.
The aqueous solution of sugar does not conduct electricity. However, when sodium chloride is added to water, it conducts electricity. How will you explain this statement on the basis of ionisation and how is it affected by concentration of sodium chloride?
If pH of a solution is 3.12, what would be the concentration of H+ ion?
Define pH.
Derive a relationship between pH and pOH.
Define pOH.
Derive relationship between pH and pOH.
Define pH.
