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
Introduction to General, Organic and Biochemistry
- 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_forward6-96 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_forward
- 6-38 Describe how we would prepare 250 mL of 0.10 M NaOH from solid NaOH and water.arrow_forward6-99 A concentrated nitric acid solution contains 35% HNO3. How would we prepare 300. mL of 4.5% solution?arrow_forward6-112 List the following aqueous solutions in order of increasing boiling point: 0.060 M glucose (C6H12O6), 0.025 M LiBr, and 0.025 M Zn(NO3)2.Assume complete dissociation of any salts.arrow_forward
- 6-39 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_forward6-78 (Chemical Connections 6A) Oxides of nitrogen (NO, NO2,N2O3) are also responsible for acid rain. Which acids can be formed from these nitrogen oxides?arrow_forward6-91 When a cucumber is put into a saline solution to pickle it, the cucumber shrinks; when a prune is put into the same solution, the prune swells. Explain what happens in each case.arrow_forward
- 6-15 Answer true or false. (a) A solute is the substance dissolved in a solvent to form a solution. (b) A solvent is the medium in which a solute is dissolved to form a solution. (c) Some solutions can be separated into their components by filtration. (d) Acid rain is a solution.arrow_forward6-83 (Chemical Connections 6C) The concentration of Ca2+ ion present in a blood sample is found to be 4.6 mEq/L. How many milligrams of Ca2+ ion are present in 250.0 mL, of the blood?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
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning