Advertisements
Advertisements
प्रश्न
Calculate the pH of the resultant mixtures: 10 mL of 0.2M Ca(OH)2 + 25 mL of 0.1M HCl.
उत्तर
Moles of `"H"_3"O"^+ = (25 xx 0.1)/1000` = .0025 mol
Moles of `"OH"^(-) = (10 xx 0.2 xx 2)/1000 = .0040 " mol"`
Thus, excess of `"OH"^-` = .0015 mol
`["OH"^(-)] = .0015/(35 xx 10^(-3)) "mol/L" = .0428`
`"pOH" = - log ["OH"]`
= 1.36
pH = 14 - 1.36
= 12.63 (not matched)
APPEARS IN
संबंधित प्रश्न
The pH of a sample of vinegar is 3.76. Calculate the concentration of hydrogen ion in it.
It has been found that the pH of a 0.01M solution of an organic acid is 4.15. Calculate the concentration of the anion, the ionization constant of the acid and its pKa.
The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.
If 0.561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. Calculate the concentrations of potassium, hydrogen and hydroxyl ions. What is its pH?
Calculate the pH of the resultant mixtures: 10 mL of 0.1M H2SO4 + 10 mL of 0.1M KOH
Choose the most correct answer :
For pH > 7 the hydronium ion concentration would be _________.
Calculate the pOH of 10-8 M of HCl.
Calculate the pH and pOH of 0.0001 M HCl solution.
Aqueous solution of ____________ will turn red litmus blue.
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 degree of dissociation of 0.1 M monobasic acid is 0.4%. Its dissociation constant is ______.
Derive relationship between pH and pOH.
Define pH.
Derive a relationship between pH and pOH.
Define pH.
Define pOH.
Derive the relation pH + pOH = 14.
Define pH.
Derive the relation pH + pOH = 14.
Define pOH.
