ACHIEVE/CHEMICAL PRINCIPLES ACCESS 1TERM
7th Edition
ISBN: 9781319399849
Author: ATKINS
Publisher: MAC HIGHER
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Chapter 4, Problem 4.41E
Interpretation Introduction
Interpretation:
The iron oxide which is more
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1)State the First Law of Thermodynamics.
2)Fluorine (F2) and iodine (I2) are both Group 17 elements. Explain with reference to intermolecular forces, why fluorine is a gas and iodine is a solid at room temperature.
4)When 30 g of ammonium nitrate, (NH4NO3) was stirred into 10 cm3 of water, the temperature fell from 21 oC to 15 oC.
5)Calculate the total amount of energy (E) released in this experiment. Ignore the heat capacity of ammonium nitrate. Take the specific heat capacity of the water as 4.18 J g-1 ºC-1. Density of water is 1.00 gcm-3.
6)This amount of energy [answer to part (i)] was produced by 30 g of ammonium nitrate. Calculate the energy change per mole of ammonium nitrate. Include the correct sign for…
Gibbs free energy (G) is a measure of the
spontaneity of a chemical reaction. It is the
chemical potential for a reaction, and is minimized
at equilibrium. It is defined as
G=H-TS
where H is enthalpy, T is temperature, and S is
entropy.
The chemical reaction that causes magnesium to
corrode in air is given by
2Mg + O2-2MgO
in which at 298 K, AH = 1204 kJ and
AS = -217.1 J/K.
-
Part B
What is the Gibbs free energy for this reaction at 5958 K? Assume that AH and AS do not change with temperature.
Express your answer to two decimal places and include the appropriate units.
► View Available Hint(s)
AGrxn=
O
μÅ
Value
Units
?
Using ONLY the information given in the problem (no thermodynamic table),
calculate the standard free energy change for this reaction.
At 298K, K = 6.74 x 106 for the following reaction:
%3D
C;H,O3 (g)
C,H6(g) + 3CO(g)
Chapter 4 Solutions
ACHIEVE/CHEMICAL PRINCIPLES ACCESS 1TERM
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