Please exlplain/show work
20. At 25 °C, for which one of the reactions below does AG°rxnAG°f? B. N20(g) + NO2(g) ? 3 ?0(g) C. Ndg) +2 O2(g) ? N2O4 g) D. 2 Na(s) + 2 H2O?-> 2 NaOH (aq) +H2(g) E. CaO(s) +CO2(g)CaCO3(s)
Solution
for delta Gorxn to be delta Gof,
rule 1: there must be only 1 mol of product being formed
rule 2: reactant must be element in their standard state
A is wrong as there are 2 mol of product being formed
B is wrong as there are 3 mol of product being formed
C is correct and it satisfied both rules
D is wrong as there are 3 mol of product being formed
E is wrong as CaO is a compound and not element
Answer: C
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Please exlplain-show work 20- At 25 C- for which one of the reactions.docx
1. Please exlplain/show work
20. At 25 °C, for which one of the reactions below does AG°rxnAG°f? B. N20(g) +
NO2(g) ? 3 ?0(g) C. Ndg) +2 O2(g) ? N2O4 g) D. 2 Na(s) + 2 H2O?-> 2 NaOH (aq) +H2(g) E.
CaO(s) +CO2(g)CaCO3(s)
Solution
for delta Gorxn to be delta Gof,
rule 1: there must be only 1 mol of product being formed
rule 2: reactant must be element in their standard state
A is wrong as there are 2 mol of product being formed
B is wrong as there are 3 mol of product being formed
C is correct and it satisfied both rules
D is wrong as there are 3 mol of product being formed
E is wrong as CaO is a compound and not element
Answer: C
