Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Chapter 10, Problem 42E
A syringe at a temperature of 20 °C is filled with liquid ether in such a way that there is no space for any vapor. If the temperature is kept constant and the plunger is withdrawn to create a volume that can be occupied by vapor, what would be the approximate pressure of the vapor produced?
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When
0.681 g of zinc was added to 75.0 mL of 0.3 M hydrochloric acid, hydrogen gas was produced.
For this reaction, suppose 240.0 mL of hydrogen gas is collected over water at 30.0 °C and at a total pressure of 784.3 torr. The vapor pressure of water at 30.0 °C is 32.0
torr. Assuming the reaction goes to completion, use the data provided to calculate the molar volume (in L/mol) of hydrogen gas at STP.
Do NOT include units in your answer. If you round during your calculation, be sure to keep at least five (5) decimal places. Report your answer to one (1) decimal place.
Answer
In the Dumas-bulb technique for determining the molarmass of an unknown liquid, you vaporize the sample of aliquid that boils below 100 °C in a boiling-water bath anddetermine the mass of vapor required to fill the bulb. Fromthe following data, calculate the molar mass of the unknownliquid: mass of unknown vapor, 1.012 g; volume of bulb,354 cm3; pressure, 742 torr; temperature, 99 °C.
In the Dumas-bulb technique for determining the molarmass of an unknown liquid, you vaporize the sample of aliquid that boils below 100 °C in a boiling-water bath anddetermine the mass of vapor required to fill the bulb. Fromthe following data, calculate the molar mass of the unknownliquid: mass of unknown vapor, 1.012 g; volume of bulb,354 cm3; pressure, 742 torr; temperature, 99 °C.
Chapter 10 Solutions
Chemistry by OpenStax (2015-05-04)
Ch. 10 - In terms of their bulk properties, how do liquids...Ch. 10 - In terms of the kinetic molecular theory, in what...Ch. 10 - In terms of the kinetic molecular theory, in what...Ch. 10 - Explain why liquids assume the shape of any...Ch. 10 - What is the evidence that all neutral atoms and...Ch. 10 - Open the PhET States of Matter Simulation...Ch. 10 - Define the following and give an example of each:...Ch. 10 - The types of intermolecular forces in a substance...Ch. 10 - Why do the boiling points of the noble gases...Ch. 10 - Neon and HF have approximately the same molecular...
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