Advertisements
Advertisements
प्रश्न
Derive the relation pH + pOH = 14.
Derive the relationship between pH and pOH.
Advertisements
उत्तर
Relationship between pH and pOH:
The ionic product of water is given as:
Kw = [H3O+][OH–]
Now, Kw = 1 × 10−14 at 298 K
Thus, [H3O+][OH-] = 1 × 10−14
Taking the 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
Assuming complete dissociation, calculate the pH of the following solution:
0.003 M HCl
Assuming complete dissociation, calculate the pH of the following solution:
0.002 M KOH
Calculate the pH of the following solution:
0.3 g of NaOH dissolved in water to give 200 mL of solution.
The pH of 0.005M codeine (C18H21NO3) solution is 9.95. Calculate its ionization constant and pKb.
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.
Calculate the pH of the resultant mixtures: 10 mL of 0.01M H2SO4 + 10 mL of 0.01M Ca(OH)2.
Which of the following solution will have a pH value equal to 1.0?
Choose the most correct answer :
Blood in the human body is highly buffered at a pH of ________.
Answer the following in one sentence:
The pH of a solution is 6.06. Calculate its H+ ion concentration.
Define pH.
What is the pOH if the hydrogen ion concentration in solution is 1 × 10–3 mol dm–3?
Calculate the pH and pOH of 0.0001 M HCl solution.
When CuSO4 solution in water is treated with concentrated HCl it turns _______.
Which complex among the following gives a white precipitate on treatment with an aqueous solution of barium chloride?
The pH of a monoacidic weak base is 11.5. The concentration of OH− ions in this solution is ____________ M.
The pH of 0.001 M HCl solution is ______.
Equal volumes of three acid solutions of pH 1, 2 and 3 are mixed in a vessel. What will be the H+ ion concentration in the mixture?
The pH of 10−5 M KOH solution will be ____________.
A sample of air turns lime water milky and also turns acidified potassium dichromate green in aqueous solution has low pH. This is due to the presence of pollutants.
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?
Define pH.
Define pOH.
Define pOH.
Define pOH.
Define pH.
Define pOH.
Define pOH.
Derive the relation pH + pOH = 14.
