40 mL of 0.1 M ammonia solution is mixed with 20 mL of 0.1 M HCl.
40 mL of 0.1 M ammonia solution is mixed with 20 mL of 0.1 M HCl. What is the pH of the mixture? ( pKb of ammonia solution is 4.74)
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(a) 4.74 […]
Equilibrium
For a reaction , 2NOCl(g) ⇌ 2NO(g) + Cl₂(g), Kc at 427⁰C
For a reaction , 2NOCl(g) ⇌ 2NO(g) + Cl₂(g), Kc at 427⁰C is 3 ˣ 10⁻⁶ mol⁻¹ L. The value of Kp is nearly
Options
(a) 7.50 ˣ 10⁻⁵ (b) 2.50 ˣ 10⁻⁵ […]
When 10 mL of 0.1 M acetic acid (pKa = 5.0 ) is titrated against 10mL of 0.1 M
When 10 mL of 0.1 M acetic acid (pKa = 5.0 ) is titrated against 10mL of 0.1 M ammonia solution (pKb = 5.0),the equivalence point occurs at pH
Options
(a) 5 (b) […]
Of the following, which change will shift the reaction towards the product
Of the following, which change will shift the reaction towards the product? I₂(g) ⇌ 2 I(g) , ΔH°r (298 K) = 150 kJ
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(a) increase in concentration of I (b) decrease in […]
What is the pH of 0.01 M glycine solution? For glycine, Ka₁ = 4.5 ˣ 10⁻³
What is the pH of 0.01 M glycine solution? For glycine, Ka₁ = 4.5 ˣ 10⁻³ and Ka₂ =1.7 ˣ 10⁻¹⁰ at 298 K
Options
(a) 3 (b) 10 (c) 6.1 (d) 7.2
For the equilibrium, H₂O(l) ⇌ H₂O(g) at 1 atm and 298 K,
For the equilibrium, H₂O(l) ⇌ H₂O(g) at 1 atm and 298 K,
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(a) standard free energy change is equal to zero (ΔG⁰ = 0) (b) free energy change is less then zero […]
Dimethyl glyoxime gives a red precipitate with Ni²⁺ ,
Dimethyl glyoxime gives a red precipitate with Ni²⁺ ,which is used for its detection .To get this precipitate readily the bast pH range is
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(a) < 1 (b) 2 – 3 (c) […]
In which of the following acid – base titration,pH is greater than 8
In which of the following acid – base titration,pH is greater than 8 at equivalence point
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(a) acetic acid versus ammonia (b) acetic acid versus sodium hydroxide (c) hydrochloric acid versus ammonia […]
In which one of the following is not a buffer solution
In which one of the following is not a buffer solution
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(a) 0.8 M H₂S + 0.8 M KHS (b) 2 M C₆H₅NH₂ + 2 M C₆H₅NH₃⁺Br⁻ (c) 3 M H₂CO₃ + […]
The solubility of CuBr is 2 ˣ 10⁻⁴ mol/L at 25⁰C. The Ksp value for CuBr is
The solubility of CuBr is 2 ˣ 10⁻⁴ mol/L at 25⁰C. The Ksp value for CuBr is
Options
(a) 4 ˣ 10⁻⁸ mol² L⁻² (b) 4 ˣ 10⁻⁴mol² L⁻² (c) 4 ˣ 10⁻¹¹mol² […]