Advertisements
Advertisements
प्रश्न
A lab assistant prepared a solution by adding a calculated quantity of HCl gas at 25°C to get a solution with [H3O+]= 4 × 10−5 M. Is the solution neutral (or) acidic (or) basic.
Advertisements
उत्तर
[H3O+] = 4 × 10−5 M
pH = – log10 [H3O+]
pH = – log10 [4 × 10−5]
pH = – log10 [4] – log10 [10−5]
pH = – 0.6020 – (– 5)
= – 0.6020 + 5
pH = 4.398
Therefore, the solution is acidic.
Since pH is less than 7, the solution is acidic.
APPEARS IN
संबंधित प्रश्न
The solubility of Sr(OH)2 at 298 K is 19.23 g/L of solution. Calculate the concentrations of strontium and hydroxyl ions and the pH of the solution.
Answer the following in brief :
The pH of a weak monobasic acid is 3.2 in its 0.02 M solution. Calculate its dissociation constant.
Calculate the pH of 0.04 M HNO3 solution.
The pH of a weak monoacidic base is 11.2, and its OH– ion concentration is ______.
Derive relationship between pH and pOH.
Derive relationship between pH and pOH.
Define pH.
Define pOH.
Derive the relation pH + pOH = 14.
Which from the following compound in aqueous medium having minimum pH?
