Consider the reaction: CH 3 OH ( g ) ⇌ CO ( g ) + 2 H 2 ( g ) Calculate Δ G for this reaction at 25°C under the following conditions: P CH 3 OH = 0.855 atm P CO = 0.125 atm P H 2 = 0.183 atm
Consider the reaction: CH 3 OH ( g ) ⇌ CO ( g ) + 2 H 2 ( g ) Calculate Δ G for this reaction at 25°C under the following conditions: P CH 3 OH = 0.855 atm P CO = 0.125 atm P H 2 = 0.183 atm
Solution Summary: The author explains that the Gibbs free energy of the system is a state function because it is defined in terms of thermodynamic properties.
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The structure of the bicarbonate (hydrogen carbonate) ion, HCO3-, HCO3
best described as a hybrid of several contributing resonance forms, two of which
are shown here.
HO
:0:
:Ö:
HO
+
Bicarbonate is crucial for the control of body pH (for example, blood pH:
7.4). A more self-indulgent use is in baking soda, where it serves as a
source of CO2 CO₂ 2 gas, which gives bread and pastry their fluffy
constituency.
(i) Draw at least one additional resonance form.
=
(ii) Using curved "electron-pushing" arrows, show how these Lewis structures may
be interconverted by movement of electron pairs. (iii) Determine which form or
forms will be the major contributor(s) to the real structure of bicarbonate,
explaining your answer on the basis of the criteria in Section 1-5.
Which of these is the best use of a volumetric flask?
measuring how much liquid it contains
delivering a precise amount of liquid to another container
holding solutions
making solutions of precise concentration
Chapter 19 Solutions
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