7. 3 pts) Give an example of an aerosol. Each multiple choice is worth 3 points.

Question

7. 3 pts) Give an example of an aerosol. Each multiple choice is worth 3 points. Write the answer on the li ne provided. For the reaction hich of the following expressions is equal to the rate of the reaction? A[N.O A[NO,] D) 9. Which of the following is/are true concerning a chemical reaction at equilibrium? 1. The system will be a mixture of reactant and products. 2. The rate of the forward and reverse reactions are equal 3. The amount of cach reactant and product is constant B) 2 only D) 1 and 2 A) 1 only C) 3 only E) 1,2, and3 10. A solution of water and a nonvolatile, nonionizing compound is placed in a tube with a semipermeable membrane on one side. The tube is placed in a beaker of pure water. What initial net effect will occur? A) Nothing will move through the membrane either way B) Water will flow from the beaker to the tube. C) Water will flow from the tube to the beaker D) Equilibrium will be immediately established. E) The compound will pass through the membrane into the solution.

Explanation / Answer

Q7

aerosol is a colloid of fine solid particles + liquid droplet into air or any gas as solvent... Examples are Fog, Dust, etc...

Q8

rate of reaction is based per unit mol so

a)

cna't be, since thi sis 2 mol

b)

true, since it is 2 mol, and reactants must be marked negative

c)

false, since it is a porduct, cant be negative

d)

false, since it has 2 moles

e)

false, since it must be based 1/2

Q9

1 is true, reactants + products is present

2 true, since this is dynamic equilbirium

3 true, concentrations will not hcang eover time

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