A 025 M Aqueous Solution of Potassium Chloride,KCl,is Tested for Conductivity

question 35

Multiple Choice

A 0.25 M aqueous solution of potassium chloride,KCl,is tested for conductivity using the type of apparatus shown.What do you predict will happen?

• A)The bulb will not light up - KCl is a nonelectrolyte
• B)The bulb will not light up - KCl is in the molecular form when dissolved in water
• C)The light bulb will shine dimly - KCl is only partially ionized in aqueous solution
• D)The light bulb will shine brightly - KCl is highly ionized in aqueous solution

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Definitions:

Variance

A measure of the dispersion, indicating how far individual numbers in a set are from the mean.

Increase

A rise or growth in quantity, size, number, value, or some other measure.

Binomial Distribution

A probability distribution that describes the number of successes in a fixed number of independent Bernoulli trials with the same probability of success.

Mean

The arithmetic average of a set of numbers, calculated by dividing the sum of these numbers by the count of the numbers in the set.