JEE Chemistry - Ionic Equilibrium

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Question - 1

Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.24 ×10-4mol L-1 solubility product of Ag2C2O4 is _________

  • A 2.42 ×10-8mol3L-3
  • B 2.66 ×10-12mol3L-3
  • C 4.5 ×10-11mol3L-3
  • D 5.619 ×10-12mol3L-3

Question - 2

Following solutions were prepared by mixing different volumes of NAOH of HCL different concentrations
1) 60 ML\(\frac{M}{10}\)HCL+40ML\(\frac{M}{10}\)NaOH
2) 50 ML\(\frac{M}{10}\)HCL+45ML\(\frac{M}{10}\)NaOH
3) 75ML\(\frac{M}{5}\)HCL+40ML\(\frac{M}{5}\)NaOH
4) 100 ML\(\frac{M}{10}\)HCL+100ML\(\frac{M}{10}\)NaOH
pH of which one of them will be equal to 1?

  • A iv
  • B i
  • C ii
  • D iii

Question - 3

The solubility of BaSO4 in water is 2.42 ×10-3gL-1 at 298K. The value of its solubility product(Ksp) will be (Given molar mass of BaSO4 =233g mol 4-1)

  • A 1.08 ×10-14mol2L-2
  • B 1.08 ×10-12mol2L-2
  • C 1.08 ×10-10mol2L-2
  • D 1.08 ×10-8mol2L-2

Question - 4

pH of a saturated solution of Ca(OH)2 is 9. The Solubility product ( Ksp) of Ca(OH)2

  • A 0.5 ×10-15
  • B 0.25 ×10-10
  • C 0.125 ×10-15
  • D 0.5 ×10-10

Question - 5

Conjugate base for bronsted acids H2O and HF are ____________

  • A OH- and H2FH+ , respectively
  • B H3O+ and F, respectively
  • C OH- and F-, respectively
  • D H3O+ and H2F+, respectively

Question - 6

Which will make basic buffer?

  • A 50 mL of 0.1M NaOH+25mL of 0.1M CH3 COOH
  • B 100 mL of 0.1M CH3COOH+100 mL of 0.1M NH4OH
  • C 100 mL of 0.1M HCl+200 mL of 0.1M NH4OH
  • D 100 mL of 0.1M HCl+100 mL of 0.1M NaOH

Question - 7

Which of the following fluro – compounds is most likely to behave as a Lewis base?

  • A BF3
  • B PF3
  • C CF4
  • D SiF4

Question - 8

Which of these is not likely to act as lewis base?

  • A BF3
  • B PF3
  • C CO
  • D F–

Question - 9

What is the decreasing order of strength of bases
OH, NH2- H - C ≡ C and CH3 - CH2-

  • A OH->NH2- >H-C≡C >CH3-CH2-
  • B NH2->OH->CH3-CH2- >H-C≡C
  • C CH3-CH2->NH2->H-C≡C->OH-
  • D OH->H-C ≡ C->CH3-CH2- >NH2-

Question - 10

The aqueous solutions of sodium formate, anilinium chloride and potassium cyanide are respectively ___________

  • A acidic, acidic, basic
  • B basic, acidic, basic
  • C basic, neutral, basic
  • D none of these
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