Advertisements
Advertisements
प्रश्न
Derive the equation pH + pOH = 14.
Advertisements
उत्तर
The ionic product of water is given as:
Kw = [H3O+][OH–]
Now, Kw = 1 × 10–14 at 298 K
Thus, [H3O+][OH–] = 1.0 × 10–14
Taking logarithm of both the sides, we write
log10[H3O+] + log10[OH–] = –14
–log10[H3O+] + {– log10[OH–]} = 14
Now, pH = –log10[H3O+] and pOH = –log10[OH–]
∴ pH + pOH = 14
संबंधित प्रश्न
Calculate the pH of the following solution:
2 g of TlOH dissolved in water to give 2 litre of solution.
Calculate the pH of the following solution:
0.3 g of NaOH dissolved in water to give 200 mL of solution.
Choose the most correct answer :
For pH > 7 the hydronium ion concentration would be _________.
Answer the following in one sentence :
Calculate the pH of 0.01 M sulphuric acid.
In NaOH solution [OH–] is 2.87 × 10–4. Calculate the pH of the solution.
Define pH.
What is the pOH if the hydrogen ion concentration in solution is 1 × 10–3 mol dm–3?
Define pOH.
Which of the following is INCORRECT statement?
When CuSO4 solution in water is treated with concentrated HCl it turns _______.
The pH of 0.001 M NaOH(aq) solution will be:
The CORRECT match between transition metal ion and its colour in aqueous solution.
The pH of a monoacidic weak base is 11.5. The concentration of OH− ions in this solution is ____________ M.
Aqueous solution of ____________ will turn red litmus blue.
The aqueous solutions of sodium formate, anilinium chloride and potassium cyanide are respectively.
50 ml of 0.05 M HNO3 is added to 50 ml of 0.025 M KOH. Calculate the pH of the resultant solution.
What is the pH of a 2.6 × 10-8 MH+ ion solution? (log 2.6 = 0.4150)
A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of \[\ce{NH^+_4}\] is 0.20 M. If the equilibrium constant, Kb tor NH3 equals 1.8 × 10-5, what is the pH of the solution?
The pH of a weak monoacidic base is 11.2, and its OH– ion concentration is ______.
Calculate the pH of the buffer solution containing 0.5 mol NaF and 0.015 mol HF per litre. [pKa = 3.1427].
Define pH.
Define pH.
Derive a relationship between pH and pOH.
Derive the relation pH + pOH = 14.
Derive the relation pH + pOH = 14.
