menu
bartleby
search
close search
Hit Return to see all results
close solutoin list

Small quantities of hydrogen gas can be prepared in the laboratory by the addition of aqueous hydrochloric acid to metallic zinc. Zn ( s ) + 2HC1 ( a q ) → ZnCl 2 ( a q ) + H 2 ( g ) Typically, the hydrogen gas is bubbled through water for collection and becomes saturated with water vapor. Suppose 240. mL of hydrogen gas is collected at 30°C and has a total pressure of 1.032 atm by this process. What is the partial pressure of hydrogen gas in the sample? How many grams of zinc must have reacted to produce this quantity of hydrogen? (The vapor pressure of water is 32 torr at 30°C.)

BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 8, Problem 91E
Textbook Problem
12 views

Small quantities of hydrogen gas can be prepared in the laboratory by the addition of aqueous hydrochloric acid to metallic zinc.

Zn ( s )   +  2HC1 ( a q )  ZnCl 2 ( a q ) +  H 2 ( g )

Typically, the hydrogen gas is bubbled through water for collection and becomes saturated with water vapor. Suppose 240. mL of hydrogen gas is collected at 30°C and has a total pressure of 1.032 atm by this process. What is the partial pressure of hydrogen gas in the sample? How many grams of zinc must have reacted to produce this quantity of hydrogen? (The vapor pressure of water is 32 torr at 30°C.)

Interpretation Introduction

Interpretation: The partial pressures hydrogen gas in the given sample and number of grams of zinc is reacted in sample are needed to be determined.

Concept introduction:

  • Partial pressure of a gas in a mixture of gases is the pressure of that gas when it alone.
  • Total pressure of a flask containing mixture of gases is the sum of individual partial pressures of constituted gases.
  • Number of moles of a substance, According to ideal gas equation,

Numberofmoles=Pressure×VolumeR×Temperature

  • Number of grams of a substance from its number of moles is,

Number of moles×Molecularmass in grams=Numberofgrams

Explanation of Solution

Explanation

  • To find: the Partial pressure of H2 in the sample

The Partial pressure of H2 in the sample is 0.990atm .

The total pressure of the sample is given as 1.032atm .

The partial pressure of water in the sample is given as 32torr=32torr×1atm760torr=0.042atm

The total pressure of sample contains partial pressure of hydrogen and water.

Therefore,

The Partial pressure of H2 in the sample is,

1.032atm-0.042atm=0.990atm

  • To find: the number of moles of hydrogen gas in the sample.

The number of moles of hydrogen gas is 9.56×10-3mol .

The Partial pressure of H2 in the sample is calculated as 0.990atm .

The volume of hydrogen gas is given as 240mL=0.240L .

The temperature of hydrogen gas is given as 30oC=303K .

The equation for finding number of moles of a substance, According to ideal gas equation,

Numberofmoles=Pressure×VolumeR×Temperature

Therefore,

The number of moles of hydrogen gas is,

Numberofmoles=0

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 8 Solutions

Chemistry: An Atoms First Approach
Show all chapter solutions
add
Ch. 8 - The barometer below shows the level of mercury at...Ch. 8 - As you increase the temperature of a gas in a...Ch. 8 - If you put a drinking straw in water, place your...Ch. 8 - Chemicals X and Y (both gases) react to form the...Ch. 8 - If you release a helium balloon, it soars upward...Ch. 8 - If you have any two gases in different containers...Ch. 8 - How does Daltons law of partial pressures help us...Ch. 8 - At the same conditions of pressure and...Ch. 8 - Draw molecular-level views that show the...Ch. 8 - At room temperature, water is a liquid with a...Ch. 8 - If a barometer were built using water (d = 1.0...Ch. 8 - A bag of potato chips is packed and sealed in Los...Ch. 8 - Boyles law can be represented graphically in...Ch. 8 - As weather balloons rise from the earths surface,...Ch. 8 - Which noble gas has the smallest density at STP?...Ch. 8 - Consider two different containers, each filled...Ch. 8 - In Example 8-11 of the text, the molar volume of...Ch. 8 - Consider the flasks in the following diagrams....Ch. 8 - Do all the molecules in a 1-mole sample of CH4(g)...Ch. 8 - Consider the following samples of gases at the...Ch. 8 - As NH3(g) is decomposed into nitrogen gas and...Ch. 8 - Which of the following statements is(are) true?...Ch. 8 - From the values in Table 8-3 for the van der Waals...Ch. 8 - Without looking at a table of values, which of the...Ch. 8 - Figure 8-6 shows the PV versus P plot for three...Ch. 8 - Ideal gas particles are assumed to be volumeless...Ch. 8 - Freon-12 (CF2C12) is commonly used as the...Ch. 8 - A gauge on a compressed gas cylinder reads 2200...Ch. 8 - A sealed-tube manometer (as shown below) can be...Ch. 8 - If the sealed-tube manometer in Exercise 39 had a...Ch. 8 - A diagram for an open-tube manometer is shown...Ch. 8 - a. If the open-tube manometer in Exercise 41...Ch. 8 - A particular balloon is designed by its...Ch. 8 - A balloon is filled to a volume of 7.00 102 mL at...Ch. 8 - An 11.2-L sample of gas is determined to contain...Ch. 8 - Consider the following chemical equation....Ch. 8 - Complete the following table for an ideal gas.Ch. 8 - Complete the following table for an ideal gas.Ch. 8 - Suppose two 200.0-L tanks are to be filled...Ch. 8 - The average lung capacity of a human is 6.0 L. How...Ch. 8 - The Steel reaction vessel of a bomb calorimeter,...Ch. 8 - A 5.0-L flask contains 0.60 g O2 at a temperature...Ch. 8 - A 2.50-L container is filled with 175 g argon. a....Ch. 8 - A person accidentally swallows a drop of liquid...Ch. 8 - A gas sample containing 1.50 moles at 25C exerts a...Ch. 8 - A bicycle tire is filled with air to a pressure of...Ch. 8 - Consider two separate gas containers at the...Ch. 8 - What will be the effect on the volume of an ideal...Ch. 8 - A container is filled with an ideal gas to a...Ch. 8 - An ideal gas at 7C is in a spherical flexible...Ch. 8 - An ideal gas is contained in a cylinder with a...Ch. 8 - A compressed gas cylinder contains 1.00 103 g...Ch. 8 - A sealed balloon is filled with 1.00 L helium at...Ch. 8 - A hot-air balloon is filled with air to a volume...Ch. 8 - Consider the following reaction:...Ch. 8 - A student adds 4.00 g of dry ice (solid CO2) to an...Ch. 8 - Air bags are activated when a severe impact causes...Ch. 8 - Concentrated hydrogen peroxide solutions are...Ch. 8 - In 1897 the Swedish explorer Andre tried to reach...Ch. 8 - Sulfur trioxide, SO3, is produced in enormous...Ch. 8 - A 15.0-L rigid container was charged with 0.500...Ch. 8 - An important process for the production of...Ch. 8 - Consider the reaction between 50.0 mL liquid...Ch. 8 - Urea (H2NCONH2) is used extensively as a nitrogen...Ch. 8 - Hydrogen cyanide is prepared commercially by the...Ch. 8 - Ethene is converted to ethane by the reaction...Ch. 8 - An unknown diatomic gas has a density of 3.164 g/L...Ch. 8 - A compound has the empirical formula CHCl. A...Ch. 8 - Uranium hexafluoride is a solid at room...Ch. 8 - Given that a sample of air is made up of nitrogen,...Ch. 8 - Determine the partial pressure of each gas as...Ch. 8 - Consider the flasks in the following diagrams. a....Ch. 8 - A piece of solid carbon dioxide, with a mass of...Ch. 8 - A mixture of 1.00 g H2 and 1.00 g He is placed in...Ch. 8 - Consider the flasks in the following diagram. What...Ch. 8 - Consider the flask apparatus in Exercise 85, which...Ch. 8 - Consider the three flasks in the diagram below....Ch. 8 - At 0C a 1.0-L flask contains 5.0 102 mole of N2,...Ch. 8 - The partial pressure of CH4(g) is 0.175 atm and...Ch. 8 - A tank contains a mixture of 52.5 g oxygen gas and...Ch. 8 - Small quantities of hydrogen gas can be prepared...Ch. 8 - Helium is collected over water at 25C and 1.00 atm...Ch. 8 - At elevated temperatures, sodium chlorate...Ch. 8 - Xenon and fluorine will react to form binary...Ch. 8 - Methanol (CH3OH) can be produced by the following...Ch. 8 - In the Mthode Champenoise, grape juice is...Ch. 8 - Hydrogen azide, HN3, decomposes on heating by the...Ch. 8 - Equal moles of sulfur dioxide gas and oxygen gas...Ch. 8 - Some very effective rocket fuels are composed of...Ch. 8 - The oxides of Group 2A metals (symbolized by M...Ch. 8 - Calculate the average kinetic energies of CH4(g)...Ch. 8 - A 100.-L flask contains a mixture of methane (CH4)...Ch. 8 - Calculate the root mean square velocities of...Ch. 8 - Consider separate 1.0-L samples of He(g) and...Ch. 8 - You have a gas in a container fitted with a...Ch. 8 - You have a gas in a container fitted with a...Ch. 8 - Consider a 1.0-L container of neon gas at STP....Ch. 8 - Consider two gases, A and B, each in a 1.0-L...Ch. 8 - Consider three identical flasks filled with...Ch. 8 - Consider separate 1.0L gaseous samples of H2, Xe,...Ch. 8 - Freon12 is used as a refrigerant in central home...Ch. 8 - The rate of effusion of a particular gas was...Ch. 8 - One way of separating oxygen isotopes is by...Ch. 8 - It took 4.5 minutes for 1.0 L helium to effuse...Ch. 8 - Calculate the pressure exerted by 0.5000 mole of...Ch. 8 - Calculate the pressure exerted by 0.5000 mole of...Ch. 8 - Use the data in Table 84 to calculate the partial...Ch. 8 - A 1.0-L sample of air is collected at 25C at sea...Ch. 8 - Write an equation to show how sulfuric acid is...Ch. 8 - Write an equation to show how sulfuric acids in...Ch. 8 - Atmospheric scientists often use mixing ratios to...Ch. 8 - Trace organic compounds in the atmosphere are...Ch. 8 - Draw a qualitative graph to show how the first...Ch. 8 - At STP, 1.0 L Br2 reacts completely with 3.0 L F2,...Ch. 8 - A form of Boyles law is PV = k (at constant T and...Ch. 8 - A 2.747g sample of manganese metal is reacted with...Ch. 8 - A 1.00L gas sample at 100.C and 600. torr contains...Ch. 8 - Cyclopropane, a gas that when mixed with oxygen is...Ch. 8 - The nitrogen content of organic compounds can be...Ch. 8 - An organic compound containing only C, H, and N...Ch. 8 - A 15.0L tank is filled with H2 to a pressure of...Ch. 8 - A spherical glass container of unknown volume...Ch. 8 - A 2.00L sample of O2(g) was collected over water...Ch. 8 - A 20.0L stainless steel container at 25C was...Ch. 8 - Metallic molybdenum can be produced from the...Ch. 8 - Nitric acid is produced commercially by the...Ch. 8 - A compound contains only C, H, and N. It is 58.51%...Ch. 8 - One of the chemical controversies of the...Ch. 8 - An organic compound contains C, H, N, and O....Ch. 8 - Consider the following diagram: Container A (with...Ch. 8 - The total volume of hydrogen gas needed to fill...Ch. 8 - Assume that 4.19 106 kJ of energy is needed to...Ch. 8 - A glass vessel contains 28 g of nitrogen gas....Ch. 8 - A steel cylinder contains 150.0 moles of argon gas...Ch. 8 - A certain flexible weather balloon contains helium...Ch. 8 - A large flask with a volume of 936 mL is evacuated...Ch. 8 - A 20.0L nickel container was charged with 0.859...Ch. 8 - Consider the unbalanced chemical equation below:...Ch. 8 - Consider separate 1.0L gaseous samples of He, N2,...Ch. 8 - Which of the following statements is(are) true? a....Ch. 8 - A chemist weighed out 5.14 g of a mixture...Ch. 8 - A mixture of chromium and zinc weighing 0.362 g...Ch. 8 - Consider a sample of a hydrocarbon (a compound...Ch. 8 - You have an equimolar mixture of the gases SO2 and...Ch. 8 - Methane (CH4) gas flows into a combustion chamber...Ch. 8 - A steel cylinder contains 5.00 moles of graphite...Ch. 8 - The total mass that can be lifted by a balloon is...Ch. 8 - You have a sealed, flexible balloon filled with...Ch. 8 - You have a helium balloon at 1.00 atm and 25C. You...Ch. 8 - We state that the ideal gas law tends to hold best...Ch. 8 - You are given an unknown gaseous binary compound...Ch. 8 - Nitrogen gas (N2) reacts with hydrogen gas (H2) to...Ch. 8 - Calculate w and E when 1 mole of a liquid is...Ch. 8 - The preparation of NO2(g) from N2(g) and O2(g) is...Ch. 8 - In the presence of nitric acid, UO2+ undergoes a...Ch. 8 - Silane, SiH4, is the silicon analogue of methane,...Ch. 8 - Solid thorium(IV) fluoride has a boiling point of...Ch. 8 - Natural gas is a mixture of hydrocarbons,...Ch. 8 - Consider an equimolar mixture (equal number of...

Additional Science Textbook Solutions

Find more solutions based on key concepts
Show solutions add
Scholarly review journals such as Nutrition Reviews. a. are behind the times when it comes to nutrition news b....

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

How might nutritional genomics influence health care in the future?

Understanding Nutrition (MindTap Course List)

Does the cell cycle refer to mitosis as well as meiosis?

Human Heredity: Principles and Issues (MindTap Course List)

In an insulated vessel, 250 g of ice at 0C is added to 600 g of water at 18.0C. (a) What is the final temperatu...

Physics for Scientists and Engineers, Technology Update (No access codes included)

What defines a deep-water wave? Are there any waves that can never be in deep water?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin