Advertisements
Advertisements
प्रश्न
The value of [H3O+] in mol lit–1 of 0.001 M acetic acid solution (Ka = 1.8 × 10–5) is ______.
विकल्प
1.34 × 10–1
1.34 × 10–2
1.34 × 10–3
1.34 × 10–4
Advertisements
उत्तर
The value of [H3O+] in mol lit–1 of 0.001 M acetic acid solution (Ka = 1.8 × 10–5) is 1.34 × 10–4.
Explanation:
[H+] or [H3O+] = αc
c = 0.001 M
= 10–3 M
α = `sqrt(K_a/c)` ......[∵ Ka = α2c]
= `sqrt((1.8 xx 10^-5)/10^-3)`
= 1.34 × 10–1
Now [H3O+] = α × c
= 1.34 × 10–1 × 10–3
= 1.34 × 10–4
APPEARS IN
संबंधित प्रश्न
Answer the following in brief.
Explain the effect of dilution of the solution on conductivity.
Answer the following:
What is Kohlrausch law of independent migration of ions? How is it useful in obtaining molar conductivity at zero concentration of a weak electrolyte? Explain with an example.
In case of weak electrolyte the graph Λ vs `sqrt"c"` is _______.
The molar conductivity and conductivity of AgNO3 solution is 121.4 Ω–1 cm2 mol–1 and 2.428 × 10–3 Ω–1 cm–1 at 25 °C. What is molar concentration of AgNO3 solution?
Give SI unit of resistivity.
Write relation between electrolytic conductivity and molar conductivity.
If resistivity of 0.8 M KCI solution is 2.5 × 10-3 Ω cm. Calculate molar conductivity of solution?
The CORRECT unit of molar conductivity is ____________.
For the reaction \[\ce{A -> B}\], the rate increases by a factor of 2.25 when the concentration of A is increased by 1.5. What is the order of the reaction?
What will be the concentration of NaCl solution, if the molar conductivity and conductivity of NaCl solution is 124.3 Ω−1 cm2 mol−1 and 1.243 × 10−4 Ω−1 cm2 respectively?
The resistance of `1/10`M solution is 2.5 × 103 ohm. What is the molar conductivity of solution? (cell constant = 1.25 cm-1).
The conductivity of 0.02 M solution of NaCl is 2.6 × 10−2 S cm−1. What is its molar conductivity?
Conductivity of KCI solution is 0.0027 Ω−1 m−1 at 25°C. The resistance of the solution is 82.4 Ω. The cell constant is ____________ m−1.
The SI unit of resistivity and molar conductivity are respectively ____________.
The resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 Ω. What is the cell constant if conductivity of 0.001 M KCI solution at 298 K is 0.146 × 10−3 S cm−1?
What is the common unit of conductivity if the dimensions are expressed in centimeter?
Which of the following graph represents the variation of `∧` with `sqrt"c"` for acetic acid solution?
What is the cell constant of `"N"/10 "KCl"` solution at 25°C, if conductivity and resistance of a solution is 0.0112 Ω−1 cm−1 and 55.0 Ω respectively?
Conductivity of a conductor is ____________.
What is the value of cell constant if conductance and conductivity of a solution is same?
What is the unit of electrical conductance?
What will be the concentration of NaCl solution, if the molar conductivity and conductivity of NaCl solution is 124.3 Ω-1 cm2 mol-1 and 1.243 × 10-4 Ω-1 cm2 respectively?
Specific conductance of 0.1 M sodium chloride solution is 1.06 × 10−2 ohm−1 cm−1. Its molar conductance in ohm−1 cm2 mol−1 is ______.
Calculate molar conductivity for 0.5 M BaCl2 if its conductivity at 298K is 0.01 Ω–1 cm–1.
Write the relation between molar conductivity and molar ionic conductivities for the electrolytes:
- Na2SO4
- AlCl3
