北京化工大学：《无机化学》课程电子教案（试卷习题）第六章自我练习题及答案

Chapter 6 Precipitation-solubility equalibria 1.for Mg(OH)is 5.1x102 The solubility of Mg(OH)is therefore: (a)1.12x10 mol dm,(b)2.37x105 mol dm3,(@)1.78x10 mol dm,(d) 1.02x10-°mol.rl 2.Which statement about AgCl is incorrect? (av)AgCl is more soluble in aqueous KCI than in water,(b)AgCl is sparingly soluble in water:(c)AgCl precipitates when aqueous AgNO;and NaCl are mixed:(d)Agl is less soluble in water than is AgCl 3.At 298 K,the solubility of AgCl is 1.33 x 10-5 mol dm3.This can also be expressed(at 298 K)as: (a)1.91x10gper100gH20,(b)1.91x103gper100gH0,(c)9.27x10-8g per 100g H2O;(d)9.27 x 10g per 100g H2O 4.Kp for Mg(OH)is5.61x102.The solubility of Mg(OH)is therefore: A.1.18 x 10-5 mol dm3 B.2.37 x 106 mol dm3 C.1.78 x 10 mol dm3 D(V).1.12x 10-mol dm-3 5.Which statement about AgCl is incorrect? A.AgCl is sparingly soluble in water B.Agl is less soluble in water than is AgCl C.AgCl precipitates when aqueous AgNO3 and NaCl are mixed D().AgCl is more soluble in aqueous KCl than in water 6.2.Which statement is incorrect? A.Zn(OH)is insoluble in water B.Zn(NH2)is insoluble in liquid NH C.Alkali metal salts of [Zn(OH)are soluble in water

Chapter 6 Precipitation-solubility equalibria 1．Ksp for Mg(OH)2 is 5.61 x 10–12. The solubility of Mg(OH)2 is therefore: (a√) 1.12 x 10–4 mol dm; (b) 2.37 x 10–6 mol dm–3; (c) 1.78 x 10–4 mol dm– ; (d) 1.02x10-9mol.l-1. 2．Which statement about AgCl is incorrect? (a√) AgCl is more soluble in aqueous KCl than in water; (b) AgCl is sparingly soluble in water; (c) AgCl precipitates when aqueous AgNO3 and NaCl are mixed; (d) AgI is less soluble in water than is AgCl 3．At 298 K, the solubility of AgCl is 1.33 x 10–5 mol dm–3. This can also be expressed (at 298 K) as: (a√) 1.91 x 10–4 g per 100 g H2O; (b) 1.91 x 10–3 g per 100 g H2O; (c) 9.27 x 10–8 g per 100 g H2O; (d) 9.27 x 10–9 g per 100 g H2O 4. Ksp for Mg(OH)2 is 5.61 x 10–12. The solubility of Mg(OH)2 is therefore: A. 1.18 x 10–6 mol dm–3 B. 2.37 x 10–6 mol dm–3 C. 1.78 x 10–4 mol dm–3 D(√). 1.12 x 10–4 mol dm–3 5. Which statement about AgCl is incorrect? A. AgCl is sparingly soluble in water B. AgI is less soluble in water than is AgCl C. AgCl precipitates when aqueous AgNO3 and NaCl are mixed D(√). AgCl is more soluble in aqueous KCl than in water 6. 2. Which statement is incorrect? A. Zn(OH)2 is insoluble in water B. Zn(NH2)2 is insoluble in liquid NH3 C. Alkali metal salts of [Zn(OH)4] 2– are soluble in water

D().Alkali metal salts of [Zn(NH)-are insoluble in liquid NH3

D(√). Alkali metal salts of [Zn(NH2)4] 2– are insoluble in liquid NH3