Concept explainers
Interpretation:
The compound that produce the bright light in the conductance apparatus should be identified.
Concept Introduction:
Conductivity of electricity is a physical property which is typical of species when dissolved in solution, typically, in an aqueous solution.
If the material dissolves properly in water, and conduces electricity, then this is said to be a strong electrolyte.
A material which dissolves and only conduces a small amount, will be considered a weak electrolyte.
A material which will not conduct electricity at all is considered a nonelectrolyte.
Note that sucrose is not even an electrolyte, so ignore it, as it will not conduct electricity.
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Chapter 6 Solutions
Student Solutions Manual for Bettelheim/Brown/Campbell/Farrell/Torres' Introduction to General, Organic and Biochemistry, 11th
- 6-38 Describe how we would prepare 250 mL of 0.10 M NaOH from solid NaOH and water.arrow_forward6-96 We know that a 0.89% saline (NaCI) solution is isotonic with blood. In a real-life emergency, you run out of physiological saline solution and have only KCI as a salt and distilled water. Would it be acceptable to make a 0.89% aqueous KCI solution and use it for intravenous infusion? Explain.arrow_forward6-99 A concentrated nitric acid solution contains 35% HNO3. How would we prepare 300. mL of 4.5% solution?arrow_forward
- 6-40 What is the molarity of each solution? (a) 47 g of KCI dissolved in enough water to give 375 mL of solution (b) 82.6 g of sucrose, C12H22O11, dissolved in enough water to give 725 mL of solution (c) 9.3 g of ammonium sulfate, (NH4)2SO4 dissolved in enough water to give 2.35 L of solutionarrow_forward6-54 An industrial wastewater contains 3.60 ppb cadmium Cd2+. How many mg of Cd2+ could be recovered from a ton (1016 kg) of this wastewater?arrow_forward6-100 Which will have greater osmotic pressure? (a) A 0.9% w/v NaCI solution (b) A 25% w/v solution of a nondissociating dextran with a molecular weight of 15,000.arrow_forward
- 6-19 In each of the following, tell whether the solutes and solvents are gases, liquids, or solids. (a) Bronze (see Chemical Connections 2E) (b) Cup of coffee (c) Car exhaust (d) Champagnearrow_forward6-113 List the following aqueous solutions in order of decreasing freezing point: 0.040 M glycerin (C3H8O3) 0.025 M NaBr, and 0.015 M AI(NO3)3 Assume complete dissociation of any salts.arrow_forward6-39 Assuming that the appropriate volumetric flasks are available, describe how we would make these solutions: (a) 175 mL of a 1.14 M solution of NH4Br in water (b) 1.35 L of a 0.825 M solution of Nal in water (c) 330 mL of a 0.16 M solution of ethanol, C2H6O, in waterarrow_forward
- 6-43 The label on a sparkling cider says it contains 22.0 g glucose (C6H12O6) 190. mg K+ , and 4.00 mg Na+ per serving of 240. mL of cider. Calculate the molarities of these ingredients in the sparkling cider.arrow_forward6-103 A swimming pool containing 20,000. L of water is chlorinated to have a final CI2 concentration of 0.00500 M. What is the CI2 concentration in ppm? How many kilograms of CI2 were added to the swimming pool to reach this concentration?arrow_forwardQ1. A solution was prepared by dissolving 1210 mg of K3Fe(CN)6 (329.2 g/mol) in sufficient water to give 775 mL. Calculate (a) the molar analytical concentration of K-Fe(CN)6- (b) the molar concentration of K+. (c) the molar concentration of Fe(CN) (d) the weight/volume percentage of K3Fe(CN)6. (e) the number of millimoles of K1 in 50.0 mL of this solution. (f) ppm Fe(CN)6¹arrow_forward
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