System Change AS O AS < 0 A mixture of carbon dioxide (CO,) An additional 2.0 L of pure O, gas AS = 0 gas and oxygen (O,) gas at 1 atm is added to the mixture, with the O AS > 0 and 22° C. pressure kept constant at 1 atm. not enough information AS < 0 The seawater is passed through a reverse-osmosis filter, which AS = 0 A liter of seawater at 15°C. separates it into 750. mL of pure O AS > 0 water and 250. mL of brine (very salty water). not enough information, AS < 0 AS = 0 1.0 g of ammonium iodide (NH4!) The ammonium iodide is dissolved in the water. O AS > 0 and 2.0 L of pure water at 26 °C. not ono ugh

System Change AS O AS < 0 A mixture of carbon dioxide (CO,) An additional 2.0 L of pure O, gas AS = 0 gas and oxygen (O,) gas at 1 atm is added to the mixture, with the O AS > 0 and 22° C. pressure kept constant at 1 atm. not enough information AS < 0 The seawater is passed through a reverse-osmosis filter, which AS = 0 A liter of seawater at 15°C. separates it into 750. mL of pure O AS > 0 water and 250. mL of brine (very salty water). not enough information, AS < 0 AS = 0 1.0 g of ammonium iodide (NH4!) The ammonium iodide is dissolved in the water. O AS > 0 and 2.0 L of pure water at 26 °C. not ono ugh

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

For each system listed in the first column of the table below, decide (if possible) whether the change describ
of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the
Note for advanced students: you may assume ideal gas and ideal solution behaviour.
System
Change
AS
O AS < 0
A mixture of carbon dioxide (C0,)
An additional 2.0 L of pure O, gas
O AS = 0
gas and oxygen (O,) gas at 1 atm
is added to the mixture, with the
O AS > 0
and 22° C.
pressure kept constant at1 atm.
not enough
information
O AS < 0
The seawater is passed through a
reverse-osmosis filter, which
O AS = 0
A liter of seawater at 15°C.
separates it into 750. mL of pure
O AS > 0
water and 250. mL of brine (very
salty water).
not enough
information ,
AS < 0
AS = 0
1.0
g of ammonium iodide (NH,I)
The ammonium iodide is dissolved in
the water.
AS > 0
and 2.0 L of pure water at 26 °C.
not enough
information

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