Question
ANSWER
8. salt Ax has low solubility grams partially ionizes in water and 2, Solution was prepared by dissolving 2 according to: of NaoH (Mwt 40 g/mol) in sufficient amount of water till having a final volume of If the molecular mass of the salt is 100 g/mol) and its at 25 aC is 0.02 g AX/200 mln What is the Ksp of AX at 25 C? 25 ml, the molarity of the solution is: b) 2.0 M a) 1.0 x 10 c) 0.5 M 0 x 10 d) 3.0 M c) 1.0 x 105 d) 1.0 x 10 e) None 13. Solution was prepared by dissolving 5 grams of Naci (Mwt-58.5 g/mol) in 200 grams of 9. Silver chloride (AgC) is only slightly soluble in water: water, the molality of the solution is: Ksp 1.8 x 10 0,427 b) 0.213 Which of the following will decrease the c) 0.085 solubility of AgCI? d) 0.043 a) Add NaNO 14. How much heat is needed to raise the b) Add NaCl temperature of 10 gram of water (molecular c) Add Ca(NO,) mass 18 g mol specific is d) Add HNO3 4.18 ug K) from 25 C to 45.0%C? e) None a) 0.418 kJ 10. What is the expected freezing point for b) 418 kJ solution with 0.3 mol/kg of NaCI? c) 1.045 kJ (Note: Kr for H20 is 1.86 "C/m) 18.81 kJ a) +0.186 °C b) 0.372 C 15, when 82 grams of sodium acetate, CH,COONa (molecular mass 82 g mole) c) -0.558 are added to 1000 ml of LO mol/L of acetic d) 1.116 C acid, CH Cooll, the pH of the solution will None, ll. If Henry constant is 0.35 mollatm. what a) 4.44 b) is the solubility of co, gas at a pressure of c) 4,74 20 atm? d) 534 a) 3.00 mol b) 7.00 mol/L, c) 4.50 mol/L e) None.
Explanation / Answer
8 - C
9 - B ) Adding NaCl...as it is a common salt
10 - C ) 0.558 C
11 - B ) 7 mol/l
12 - B ) 2 M
13 - A ) 0.427
14 - E) It comes out to be 836 J...None of the options
15 - C ) 4.74
