(a)
Interpretation:
The entropy change (
Concept introduction:
Entropy is defined as the ratio of thermal energy to the temperature which is unavailable for work done. It is also defined as the measure of disorder of molecule of a system. It is an extensive property and state function.
Entropy is related with the number of microstates for a system and microstate is defined as the number of ways for the system to be arranged.
The standard entropy change at room temperature is equal to the difference between the standard entropy of reactant and standard entropy of product.
Answer to Problem 22QAP
Explanation of Solution
Given process is:
The mathematical expression for the standard entropy value at room temperature is:
Where, n and p represents the coefficients of reactants and products in the balanced chemical equation.
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
Put the values, we get:
(b)
Interpretation:
The entropy change (
Concept introduction:
Entropy is defined as the ratio of thermal energy to the temperature which is unavailable for work done. It is also defined as the measure of disorder of molecule of a system. It is an extensive property and state function.
Entropy is related with the number of microstates for a system and microstate is defined as the number of ways for the system to be arranged.
The standard entropy change at room temperature is equal to the difference between the standard entropy of reactant and standard entropy of product.
Answer to Problem 22QAP
Explanation of Solution
Given process is:
The mathematical expression for the standard entropy value at room temperature is:
Where, n and p represents the coefficients of reactants and products in the balanced chemical equation.
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
Put the values, we get:
(c)
Interpretation:
The entropy change (
Concept introduction:
Entropy is defined as the ratio of thermal energy to the temperature which is unavailable for work done. It is also defined as the measure of disorder of molecule of a system. It is an extensive property and state function.
Entropy is related with the number of microstates for a system and microstate is defined as the number of ways for the system to be arranged.
The standard entropy change at room temperature is equal to the difference between the standard entropy of reactant and standard entropy of product.
Answer to Problem 22QAP
Explanation of Solution
Given process is:
The mathematical expression for the standard entropy value at room temperature is:
Where, n and p represents the coefficients of reactants and products in the balanced chemical equation.
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
The value of standard entropy for
Put the values, we get:
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Chapter 16 Solutions
EBK CHEMISTRY: PRINCIPLES AND REACTIONS
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- a Calculate K1, at 25C for sulfurous acid: H2SO3(aq)H+(aq)+HSO3(aq) b Which thermodynamic factor is the most significant in accounting for the fact that sulfurous acid is a weak acid? Why?arrow_forwarda Calculate K1, at 25C for phosphoric acid: H3PO4(aq)H+(aq)+H2PO4(aq) b Which thermodynamic factor is the most significant in accounting for the fact that phosphoric acid is a weak acid? Why ?arrow_forwardWhat is a spontaneous reaction?arrow_forward
- Consider the decomposition of red mercury(II) oxide under standard state conditions.. 2HgO(s,red)2Hg(l)+O2(g) (a) Is the decomposition spontaneous under standard state conditions? (b) Above what temperature does the reaction become spontaneous?arrow_forwardElemental boron, in the form of thin fibers, can be made by reducing a boron halide with H2. BCl3(g) + 3/2 H2(g) B(s) + 3HCl(g) Calculate H, S, and G at 25 C for this reaction. Is the reaction predicted to be product favored at equilibrium at 25 C? If so, is it enthalpy driven or entropy driven?arrow_forwardCalculate the equilibrium constant at 25 C for each of the following reactions from the value G given. (a) I2(s)+Cl2(l)2ICl(g)G=10.88kJ (b) H2(g)+I2(s)2HI(g)G=3.4kJ (c) CS2(g)+3Cl2(g)CCl4(g)+S2Cl2(g)G=39kJ (d) 2SO2(g)+O2(g)2SO3(g)G=141.82kJ (e) CS2(g)CS2(l)G=1.88kJarrow_forward
- Calculate G for the following reactions and state whether each reaction is spontaneous under standard conditions at 298 K. (a) 2Na(s) + H2SO4() Na2SO4(s) + H2(g) (b) Cu(s) + H2SO4() CuSO4(s) + H2(g)arrow_forwardCalculate K at 25°C for each of the reactions referred to in Question 32. Assume smallest whole-number coefficients.arrow_forwardFor the reaction 2Cu(s)+S(s)Cu2S(s) H and G are negative and S is positive. a At equilibrium, will reactants or products predominate? Why? b Why must the reaction system be heated in order to produce copper(I) sulfide?arrow_forward
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