I.Solve the following problems and show your solution. 1) You added 1.2 kg of ethylene glycol (HOCH2CH2OH), as an antifreeze to 4.0 kg of water in the radiator of your car. What are the mole fraction, molality, and weight percent of the ethylene glycol? 2) A sample of 0.892 g of potassium chloride (KCl) is dissolved in 54.6 g of water. What is the percent by mass of KCl in the solution? 3) What is the mass percent of sodium hydroxide in a solution that is made by dissolving 8.00 g NaOH in 50.0 g H2O?

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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I.Solve the following problems and show your solution.

1) You added 1.2 kg of ethylene glycol (HOCH2CH2OH), as an antifreeze to 4.0 kg of water in the radiator of your car. What are the mole fraction, molality, and weight percent of the ethylene glycol?

2) A sample of 0.892 g of potassium chloride (KCl) is dissolved in 54.6 g of water. What is the percent by mass of KCl in the solution?

3) What is the mass percent of sodium hydroxide in a solution that is made by dissolving 8.00 g NaOH in 50.0 g H2O? 

 

II.Given the reaction CO(g) + H2O(g) ⇄ CO2(g) + H2(g), Keq = 1.0 at 1100oK.

 If 2 moles each of CO and H2O, and 1 mole each of CO2 and H2are brought together in the same vessel at the given temperature;

  1. a) will these amounts remain unchanged?
  2. b) what will be the amount of each of the reacting species in the final equilibrium mixture for the reaction above?  
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