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General Chemistry Principles, Patterns, and Applications, 2011

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1. For an ideal gas, is volume directly proportional or inversely proportional to temperature? What is the<br />

volume of an ideal gas at absolute zero?<br />

2. What is meant by STP? If a gas is at STP, what further information is required to completely describe the state<br />

of the gas?<br />

3. For a given amount of a gas, the volume, temperature, <strong>and</strong> pressure under any one set of conditions are<br />

related to the volume, the temperature, <strong>and</strong> the pressure under any other set of conditions by<br />

the equation P1V1T1 = P2V 2T 2.<br />

Derive this equation from the ideal gas law.<br />

At constant temperature<br />

, this equation reduces to one of the laws discussed<br />

inSection 10.3 "Relationships among Pressure, Temperature, Volume, <strong>and</strong> Amount"; which one? At constant<br />

pressure, this equation reduces to one of the laws discussed in Section 10.3 "Relationships among Pressure,<br />

Temperature, Volume, <strong>and</strong> Amount"; which one?<br />

4. Predict the effect of each change on one variable if the other variables are held constant.<br />

a. If the number of moles of gas increases, what is the effect on the temperature of the gas?<br />

b. If the temperature of a gas decreases, what is the effect on the pressure of the gas?<br />

c. If the volume of a gas increases, what is the effect on the temperature of the gas?<br />

d. If the pressure of a gas increases, what is the effect on the number of moles of the gas?<br />

5. What would the ideal gas law be if the following were true?<br />

a. volume were proportional to pressure<br />

b. temperature were proportional to amount<br />

c. pressure were inversely proportional to temperature<br />

d. volume were inversely proportional to temperature<br />

e. both pressure <strong>and</strong> volume were inversely proportional to temperature<br />

6. Given the following initial <strong>and</strong> final values, what additional information is needed to solve the problem using<br />

the ideal gas law?<br />

Given<br />

Solve for<br />

V1, T1, T2, n1 n 2<br />

P1, P2, T2, n2 n 1<br />

T1, T2 V 2<br />

P1, n1 P 2<br />

Saylor URL: http://www.saylor.org/books<br />

Saylor.org<br />

917

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