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Chapter 5: Q5.13P (page 227)
What is the pressure (in Pa) of the gas in the flask in Figure P5.13?
The pressure of the gas is .
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In a closed-end manometer, the mercury level in the arm attached to the flask can never be higher than the mercury level in the other arm, whereas in an open-end manometer, it can be higher. Explain.
What is the effect of the following on the volume of 1 mol of an ideal gas?
(a) Half the gas escapes (at constantPandT).
(b) The initial pressure is 722 torr, and the final pressure is 0.950 atm; the initial temperature is 32oF, and the final temperature is 273 K.
(c) Both the pressure and temperature decrease to one-fourth of their initial values.
In Figure P5.11, what is the pressure of the gas in the flask (in kPa) if the barometer reads 765.2 mmHg?
Boyle鈥檚 law relates gas volume to pressure, and Avogadro鈥檚 law relates gas volume to number of moles. State a relationship between gas pressure and number of moles.
Are the particles in a gas farther apart or closer together than the particles in a liquid? Use your answer to explain each of the following general observations:
(a) Gases are more compressible than liquids.
(b) Gases have lower viscosities than liquids.
(c) After thorough stirring, all gas mixtures are solutions.
(d) The density of a substance in the gas state is lower than in the liquid state.
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