Advertisements
Advertisements
प्रश्न
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?
पर्याय
3.7 × 10−2
10−6
0.111
none of these
उत्तर
3.7 × 10−2
Explanation:
pH = −log10 [H+]
∴ [H+] = 10−pH
Let the volume be x mL
V1M1 + V2M2 + V3M3 = VM
∴ x mL of 10−1 M + x mL of 10−2 M + x mL of 10−3 M = 3x mL of [H+]
∴ [H+] = `("x"[0.1 + 0.01 + 0.001])/(3"x")`
= `(0.1 + 0.01 + 0.001)/3`
= `0.111/3`
= 0.037
= 3.7 × 10−2
APPEARS IN
संबंधित प्रश्न
Assuming complete dissociation, calculate the pH of the following solution:
0.002 M KOH
Calculate the pH of the following solutions:
0.3 g of Ca(OH)2 dissolved in water to give 500 mL of solution.
Calculate the pH of the following solution:
0.3 g of NaOH dissolved in water to give 200 mL of solution.
Derive the relation pH + pOH = 14.
Define pOH.
Which of the following is CORRECT for an aqueous solution of NH4CN?
[Ka of HCN = 4.0 × 10−10, Kb for NH4OH = 1.8 × 10−5]
The least basic hydroxide from the following is:
The aqueous solution of sugar does not conduct electricity. However, when sodium chloride is added to water, it conducts electricity. How will you explain this statement on the basis of ionisation and how is it affected by concentration of sodium chloride?
Derive the relationship between pH and pOH.
Define pH.
