Question

1. Which of the following compounds should be soluble in CC14? a) Naci b ) H20 c) NaOH d) C3H18 e) None of these 2. with increasing CO2 pressure and_ with The solubility of carbon dioxide gas in water increasing temperature. a) increases, increases b) increases, decreases c) decreases, increases d) decreases, decreases e) remains constant, decreases 3. Pressure . Based on the Raoult's Law plot for a mixture of liquids A and B shown on the right, which of the following is(are) TRUE? I. Both liquids are volatile. II. The two liquids exhibit very different intermolecular forces. III. Point X represents the pure vapor pressure of liquid B. IV. The dashed lines represent what would be found in an ideal mixture. Which aqueous solution will have the highest boiling point? 0 0.2 0.4 0.6 0.8 1.0 4. a) 0.2 M NaBr, sodium bromide 0.2 M CaCl2, calcium chloride 0.2 M K3PO4, potassium phosphate 0.4 M C6H12O6, glucose They all have the same freezing point

Answer 1

1. d) Cg Hig A NON POUR soort SOLVENT. SO like IS NON-POLAR Cg His will be soluble in Cala 2. Co₂ SowBiding of PRESSURE co, IN, WATER AND DECREASES INCREASES WITH INCREASING with INCREASING TEMPERATURE I. POINT X REPRESENTS THE PURE vapor pressURL OF LIQUID B. THE DASHER LINES REPRESENT WHAT WOULD BE FOUND IN AN Dete mixture 4. Te (sownow). – Ig (water) = ľky b = 1TB - TB (WATER) = 1000 , Kg is CONSTANT FOR WATER. so AT DEPENDS ON i AND b . i is van's HOFF FACTOR. SONS INTO WHICH A SOWIE DISSOLATES. b is molality. b=0:2 , 1:2 FOR nabor s ATB = 2x012 Kg. = 0.4 Kb b=0.2, i= 3 For Calls of AT = 3x0.2 Kb = 0.6 kb b=0.2 := 4 for K₂ PO a At = 4x0.2 Kb = 0.8kg b=0.4 ,it For Glucose - AT= 1x 0.4 kq = 0.4 Kb Aws: Highese Bip: c) 0.2M K3 P04, Potassium P M :