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
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?
Which of the following solution will have a pH value equal to 1.0?
Calculate the pOH of 10-8 M of HCl.
Following solutions were prepared by mixing different volumes of NaOH of HCl different concentrations.
i. 60 mL `"M"/10` HCl + 40 mL `"M"/10` NaOH
ii. 55 mL `"M"/10` HCl + 45 mL `"M"/10` NaOH
iii. 75 mL `"M"/5` HCl + 25 mL `"M"/5` NaOH
iv. 100 mL `"M"/10` HCl + 100 mL `"M"/10` NaOH
pH of which one of them will be equal to 1?
The aqueous solutions of sodium formate, anilinium chloride and potassium cyanide are respectively.
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.
Define pH.
Derive the relation pH + pOH = 14.
Define pH.
