Chemistry & Chemical Reactivity
10th Edition
ISBN: 9781337399074
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Chapter 11, Problem 37GQ
Interpretation Introduction
Number of atoms of mercury vapor occur per cubic meter has to be identified.
Concept Introduction:
According to ideal gas equation
Where,
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A student experimentally determines the gas law constant, R, by reacting a small piece of
magnesium with excess hydrochloric acid and then collecting the hydrogen gas over water
in a eudiometer. Based on experimentally collected data, the student calculates R to equal
L'atm
0.0832
mol·K
L'atm
Ideal gas law constant from literature: 0.08206
mol·K
(a) Determine the percent error for the student's R-value.
Percent error =|1.389
(b) For the statements below, identify the possible source(s) of error for this student's trial.
The student uses the barometric pressure for the lab to calculate R.
The student does not equilibrate the water levels within the eudiometer and the
beaker at the end of the reaction. The water level in the eudiometer is 1-inch
above the water level in the beaker.
The student does not clean the zinc metal with sand paper.
The student notices a large air bubble in the eudiometer after collecting the
hydrogen gas, but does not dislodge it.
When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction include aqueous calcium chloride, liquid water, and gaseous carbon dioxide. Calculate the volume of CO₂ gas (in L) collected over water at 25.0 °C when 25.1 g of calcium carbonate is added to excess hydrochloric acid if the total pressure is 911 mm Hg. The vapor pressure of water at 25.0 °C is 23.8 mm Hg.
A student experimentally determines the gas law constant, R, by reacting a small piece of magnesium
with excess hydrochloric acid and then collecting the hydrogen gas over water in a eudiometer. Based
L-atm
on experimentally collected data, the student calculates R to equal 0.0832
mol·K
L-atm
Ideal gas law constant from literature: 0.08206
mol·K
(a) Determine the percent error for the student's R-value.
Percent error =
%
(b) For the statements below, identify the possible source(s) of error for this student's trial.
The student notices a large air bubble in the eudiometer after collecting the hydrogen gas, but
does not dislodge it.
The student does not clean the zinc metal with sand paper.
The student does not equilibrate the water levels within the eudiometer and the beaker at the
end of the reaction. The water level in the eudiometer is 1-inch above the water level in the
beaker.
The student uses the barometric pressure for the lab to calculate R.
Chapter 11 Solutions
Chemistry & Chemical Reactivity
Ch. 11.2 - Which should have the more negative hydration...Ch. 11.3 - Using structural formulas, describe the hydrogen...Ch. 11.4 - Prob. 11.3CYUCh. 11.5 - Prob. 11.4CYUCh. 11.6 - The molar enthalpy of vaporization of methanol,...Ch. 11.6 - Prob. 11.6CYUCh. 11.6 - Prob. 1.1ACPCh. 11.6 - Prob. 1.2ACPCh. 11.6 - Prob. 2.1ACPCh. 11.6 - Prob. 2.2ACP
Ch. 11 - Prob. 1PSCh. 11 - Intermolecular forces: What type of forces must be...Ch. 11 - Prob. 3PSCh. 11 - Prob. 4PSCh. 11 - Considering intermolecular forces in the pure...Ch. 11 - Considering intermolecular forces in the pure...Ch. 11 - Prob. 7PSCh. 11 - Which of the following compounds would be expected...Ch. 11 - Prob. 9PSCh. 11 - When salts of Mg2+, Na+, and Cs+ are placed in...Ch. 11 - Prob. 11PSCh. 11 - The enthalpy of vaporization of liquid mercury is...Ch. 11 - Answer the following questions using Figure 11.12:...Ch. 11 - Answer the following questions using Figure 11.12:...Ch. 11 - Prob. 15PSCh. 11 - Refer to Figure 11.12 to answer these questions:...Ch. 11 - Which member of each of the following pairs of...Ch. 11 - Place the following four compounds in order of...Ch. 11 - Prob. 19PSCh. 11 - You are comparing three different substances, A,...Ch. 11 - Equilibrium vapor pressures of benzene, C6H6, at...Ch. 11 - Prob. 22PSCh. 11 - Can carbon monoxide (Tc = 132.9 K; Pc = 34.5 atm...Ch. 11 - Methane (CH4) cannot be liquefied at room...Ch. 11 - What is surface tension? Give an example...Ch. 11 - What factors affect the viscosity of a substance?...Ch. 11 - If a piece of filter paper (an absorbent paper...Ch. 11 - When water is placed in a buret it forms a concave...Ch. 11 - Prob. 29GQCh. 11 - What types of intermolecular forces are important...Ch. 11 - Which of the following salts, Li2SO4 or Cs2SO4, is...Ch. 11 - Prob. 32GQCh. 11 - Prob. 33GQCh. 11 - Prob. 34GQCh. 11 - Rank the following compounds in order of...Ch. 11 - Prob. 36GQCh. 11 - Prob. 37GQCh. 11 - The following data are the equilibrium vapor...Ch. 11 - Prob. 39ILCh. 11 - A hand boiler can be purchased in toy stores or at...Ch. 11 - Prob. 41ILCh. 11 - Prob. 42ILCh. 11 - Acetone, CH3COCH3, is a common laboratory solvent....Ch. 11 - Cooking oil floats on top of water. From this...Ch. 11 - Liquid ethylene glycol, HOCH2CH2OH, is one of the...Ch. 11 - Liquid methanol, CH3OH, is placed in a glass tube....Ch. 11 - Account for these facts: (a) Although ethanol...Ch. 11 - Prob. 48SCQCh. 11 - Prob. 49SCQCh. 11 - Prob. 50SCQCh. 11 - Prob. 51SCQCh. 11 - Prob. 52SCQCh. 11 - A fluorocarbon, CF4, has a critical temperature of...Ch. 11 - Prob. 55SCQCh. 11 - List four properties of liquids that are directly...Ch. 11 - List the following ions in order of hydration...Ch. 11 - Prob. 59SCQCh. 11 - An 8.82-g sample of Br2 is placed in an evacuated...Ch. 11 - Polarizability is defined as the extent to which...Ch. 11 - Prob. 62SCQCh. 11 - A pressure cooker (a kitchen appliance) is a pot...Ch. 11 - Vapor pressures of NH3() at several temperatures...Ch. 11 - Prob. 65SCQCh. 11 - Prob. 66SCQCh. 11 - Prob. 67SCQ
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