ALEKS 360 AC INTRD CHEM >I<
5th Edition
ISBN: 9781260977585
Author: BAUER
Publisher: MCG
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Chapter 9, Problem 128QP
Interpretation Introduction
Interpretation:
The mass of sodium azide needed to fill
Concept Introduction:
Avogadro’s law gives a relation between the volume of a gas and the number of moles present in the gas at constant temperature and pressure. The volume of gas
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The volume of a sample of pure HCl gas was 289 mL at 24
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C and 137 mmHg. It was completely dissolved in about 50 mL of water and titrated with an NaOH solution;
11.7 mL
of the NaOH solution was required to neutralize the HCl. Calculate the molarity of the NaOH solution.
73. A 500.-mL sample of O2 gas at 24 °C
was prepared by decomposing a 3%
aqueous solution of hydrogen peroxide,
H2 O2, in the presence of a small amount
of manganese catalyst by the reaction
2H2 O2 (aq) → 2H2O (g) +
The oxygen thus prepared was
collected by displacement of water. The
total pressure of gas collected was
755 mm Hg. What is the partial pressure
of O2 in the mixture? How many moles
of O2 are in the mixture? (The vapor
pressure of water at 24 °C is 23 mm Hg.)
[5] Sodium chlorate decomposes on heating to sodium chloride and oxygen gas.
heat
2NACIO:(s) → 2NaCI(s) + 302(g)
A 0.8765 g sample of impure sodium chlorate was heated until the production of oxygen gas ceased. The oxygen
gas collected over water occupied 57.2 ml at a temperature of 22 °C and a pressure of 734 torr. Calculate the mass
percent of NaCIO3 in the original sample. (At 22 °C the vapor pressure of water is 19.8 torr.)
Chapter 9 Solutions
ALEKS 360 AC INTRD CHEM >I<
Ch. 9 - Prob. 1QCCh. 9 - Prob. 2QCCh. 9 - Prob. 3QCCh. 9 - Prob. 4QCCh. 9 - Prob. 5QCCh. 9 - Prob. 1PPCh. 9 - Prob. 2PPCh. 9 - What pressure is needed to compress 455 mL of...Ch. 9 - Prob. 4PPCh. 9 - Prob. 5PP
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