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Solved! Get answer or ask a different Question 25852

Question 1 (2 pts) Predicting relative solubilities of substances Which compound is more soluble in the given solvent?1-butanol (CH3CH2CH2CH2OH) or butane (CH3CH2CH2CH3) in waterChloroform (CHCl3) or carbon tetra chloride (CCl4) in waterQuestion 2 (3 pts) Using Henry’s Law to calculate gas solubility If air contains 78% N2 by volume, what is the solubility of N2 in water of 25oC and 1 atm (Henry’s constant kH for N2 in H2O at 25oC = 7 x 10-4 mol/L.atm)?Question 3 (3 pts)In a solution of 20 g NaCl and 40 g of water, there are_____ g solute_____ g solvent_____ g solutionQuestion 4 (4 pts)Calculate the molarity of each of the following solutions20.0 g NaCl in 1.0 L H2O33 g glucose, C6H12O6, in 5.00 x 102 mL solutionQuestion 5 (4 pts)Calculate the number of grams of solute that would be needed to make each of the following solutions2.50 x 102 mL of 0.100 M NaCl2.50 x 102 mL of 0.200 M C6H12O6, glucoseQuestion 6 (6 pts)a) A saturated silver chloride solution contains 1.58 x 10-4 g silver chloride per 100 mL solution. What is the molarity of the solution?b) How many grams of silver and how many grams of chloride ions are in 1 L of solution?Question 7 (4 pts) Calculate the molarity of the following solutionsDissolve 0.1 g of CaCO3 in 1 L of solution. 71 g of Na2SO4 is dissolved in 6.0 L of solution. 68 g of CaSO4 is dissolved in 4.0 L of solution. 80 grams of NaOH is dissolved in 2.0 L of solutionQuestion 8 (5 pts) More molarity problems.2 moles of salt are dissolved in 5 L of solution. What is the molarity of the solution?What is the molarity of a solution if 10.0 g of HCl are dissolved in 400 mL of solution?What is the molarity of a solution if 15.0 g of NaOH is dissolved in 1400 mL of solution?How many moles of solute are in 300 mL of a 0.450 M solution?How many moles of KCl are in100 mL of a 0.110 M KCl solution?Question 9 (3 pts) Calculating molalityHow many grams of glucose (C6H12O6) must be dissolved in 563 gram of ethanol (C2H5OH) to prepare a 2.40 x 10-2 m solution?Question 10 (3 pts): Osmotic pressureA 0.30 M solution of sucrose (C12H22O11) at 37oC has approximately the same osmotic pressure as blood. What is the osmotic pressure of blood?Question 11 (3 pts): Freezing point depressionThe freezing point of benzene is 5.5oC. What is the freezing point depression of a solution of 5.00 g naphthalene (C10H8) in 444 g benzene (Kf of benzene = 4.90oC/m)?Question 12 (6 pts) Solutions and MixturesWhat is the concentration of solute particles (or ions) in mol/L present in 1 L of the following aqueous solutions? Assume all compounds listed are soluble. (Hint: which of these compounds are ionic compounds and will dissociate, and which ones are not? See also Chapter 2 and 3)0.07 M KI0.07 M K2SO40.070 M Ba(NO3)20.070 M Na3PO40.070 M ethanol (C2H5OH)2.50 M (NH4)3PO4Question 13 (4 pts) Concentrations (Show your calculations!)How many moles of (NH4)3PO4 are present in 100.0 mL of 2.50 M (NH4)3PO4?How many moles of ions are present in 100.0 mL of 2.50 M (NH4)3PO4?

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