4.68 The pictures below show a molecular-scale view of a chemical reaction between the compounds AB 2 and B 2 . (Green balls represent B atoms and orange balls are A atoms). The box on the left represents the reactants at the instant of mixing, and the box on the right shows what is left once the reaction has gone to completion. Was there a limiting reactant in this reaction? If so, what was it? Write a balanced chemical equation for this reaction. As usual, your equation should use the smallest possible whole number coefficients for all substances.
4.68 The pictures below show a molecular-scale view of a chemical reaction between the compounds AB 2 and B 2 . (Green balls represent B atoms and orange balls are A atoms). The box on the left represents the reactants at the instant of mixing, and the box on the right shows what is left once the reaction has gone to completion. Was there a limiting reactant in this reaction? If so, what was it? Write a balanced chemical equation for this reaction. As usual, your equation should use the smallest possible whole number coefficients for all substances.
Solution Summary: The author explains that the limiting reactant is calculated via stoichiometry, and that excess reactants should remain after the reaction.
4.68 The pictures below show a molecular-scale view of a chemical reaction between the compounds AB2 and B2. (Green balls represent B atoms and orange balls are A atoms). The box on the left represents the reactants at the instant of mixing, and the box on the right shows what is left once the reaction has gone to completion.
Was there a limiting reactant in this reaction? If so, what was it? Write a balanced chemical equation for this reaction. As usual, your equation should use the smallest possible whole number coefficients for all substances.
Definition Definition Transformation of a chemical species into another chemical species. A chemical reaction consists of breaking existing bonds and forming new ones by changing the position of electrons. These reactions are best explained using a chemical equation.
a. The change in the Gibbs energy of a certain constant pressure process is found to fit the expression:
AG-85.1 J mol −1 +36.5 J mol ¹K-1 × T
A. Calculate the value of AS for the process.
B. Next, use the Gibbs-Helmholtz equation:
(a(AG/T))
ΔΗ
-
T2
to calculate the value of AH for the process.
None
Chapter 4 Solutions
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