MEDIUM
Earn 100

The presence of NH4Cl in the test solution while precipitating group III-A hydroxides (in qualitative inorganic analysis) helps in

50% studentsanswered this correctly

Important Questions on Equilibrium

MEDIUM
What is the molar solubility of AIOH3 in 0.2 M NaOH solution? Given that, solubility product of AlOH3=2.4×10-24 :
HARD
Zirconium phosphate [Zr3(PO4)4] dissociates into three zirconium cations of charge​ +4 and four phosphate anions of charge -3. If molar solubility of zirconium phosphate is denoted by s and its solubility product by Ksp then which of the following relationship between s and Ksp is correct ​?
MEDIUM
If solubility product of Zr3(PO4)4 is denoted by Ksp and its molar solubility is denoted by S , then which of the following relation between S and Ksp is correct?
MEDIUM
The Ksp for the following dissociation is 1.6×10-5
PbCl2sPbaq2++2Claq-
Which of the following choices is correct for a mixture of 300 mL, 0.134 M PbNO32 and 100 mL, 0.4 NaCl?
HARD
The Ksp of Ag2CrO4, AgCl, AgBr and AgI are respectively, 1.1×10-12 , 1.8×10-10 , 5.0×10-13 , 8.3×10-17 . Which one of the following salts will precipitate last if AgNO3 solution is added to the solution containing equal moles of NaCl, NaI, NaBr and Na2CrO4 ?
MEDIUM
The molar solubility of CdOH2 is 1.84×10-5M in water. The expected solubility of CdOH2 in a buffer solution of pH=12 is:
HARD
An aqueous solution contains an unknown concentration of Ba2+. When 50 mL of a 1 M solution of Na2SO4 is added, BaSO4 just begins to precipitate. The final volume is 500 mL. The solubility product of BaSO4 is 1×10-10. What is the original concentration of Ba2+?
EASY
HCl was passed through a solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallise(s)?
EASY
The solubility of AgCls with solubility product 1.6×10-10 in 0.1 M NaCl solution would be
HARD
The Ksp of Ag2CrO4 is 1 . 1 × 1 0 - 1 2  at 298 K. The solubility (in mol L-1) of Ag2CrO4 in a 0.1 M AgNO3 solution is
MEDIUM

The stoichiometry and solubility product of a salt with the solubility curve given below is, respectively:

Question Image

EASY
If Ksp of Ag2CO3 is 8×10-12 , the molar solubility of Ag2CO3 in 0.1MAgNO3 is:
MEDIUM
The solubility product of Cr(OH)3 at 298K is 6.0×10-31. The concentration of hydroxide ions in a saturated solution of CrOH3 will be
MEDIUM
pH of a saturated solution of CaOH2 is 9 . The solubility product Ksp of CaOH2 is:
HARD
An acidified solution of 0.05 M Zn2+ is saturated with 0.1 M H2S. What is the minimum molar concentration (M) of H+ required to prevent the precipitation of ZnS? Use Ksp(ZnS)=1.25×10-22 and overall dissociation constant of H2S, KNET=K1K2=1×10-21
HARD
Find out the solubility of NiOH2 in 0.1 M NaOH. Given that the ionic product of NiOH2 is 2×1015.
MEDIUM
Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 × 10-4 mol L-1. Solubility product of Ag2C2O4 is:
HARD
The solubility of a salt of weak acid AB at pH=3 is Y×10-3 mol L-1. The value of Y is ____(Nearest integer). (Given that the value of solubility product of ABKsp=2×10-10 , and the value of ionisation constant of HBKa=1×10-8)
MEDIUM
MY and NY3 , two nearly insoluble salts, have the same Ksp values of 6.2×10-13 at room temperature. Which statement would be true in regard to MY and NY3 ?