All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: The hydrogen gas formed in a chemical reaction is collected over water at 30.0°C at a total pressure of 728 mmHg.Part AWhat is the partial pressure (mmHg) of the hydrogen gas collected in this way? 

Part B If the total volume of gas collected is 724 mL, what mass (g) of hydrogen gas is collected? 

Solution: The hydrogen gas formed in a chemical reaction is collected over water at 30.0°C at a total pressure of 728 mmHg.Part AWhat is the partial pressure (mmHg) of the hydrogen gas collected in this way? Pa

Problem

The hydrogen gas formed in a chemical reaction is collected over water at 30.0°C at a total pressure of 728 mmHg.

Part A

What is the partial pressure (mmHg) of the hydrogen gas collected in this way? 



Part B 

If the total volume of gas collected is 724 mL, what mass (g) of hydrogen gas is collected? 


Solution

For problems that involve collecting gas over water, we should note that the total pressure is the sum of the partial pressure of the gas and water. We have to look for the value for the partial pressure of water at a certain temperature from literature (books/tables). 

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