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Author Question: A mixture of hydrogen and chlorine remains unreacted until it is exposed to ultraviolet light from a ... (Read 84 times)

SO00

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on: Mar 21, 2021

Question 1

A chemical reaction is most likely to be spontaneous if it is accompanied by

◦ increasing energy and increasing entropy
◦ lowering energy and increasing entropy
◦ increasing energy and decreasing entropy
◦ lowering energy and decreasing entropy
◦ None of these are correct.

Question 2

A mixture of hydrogen and chlorine remains unreacted until it is exposed to ultraviolet light from a burning magnesium strip. Then the following reaction occurs very rapidly:
 
 
 
H2(g) + Cl2(g) → 2HCl(g)
ΔG = –45.54 kJ
 
 
 
 
ΔH = –44.12 kJ
 
 
 
 
ΔS = –4.76 J/K
Which of the following is consistent with this information?


◦ The reactants are thermodynamically more stable than the products.
◦ The reaction has a small equilibrium constant.
◦ The ultraviolet light raises the temperature of the system and makes the reaction more favorable.
◦ The negative value for ΔS slows down the reaction.
◦ The reaction is spontaneous, but the reactants are kinetically stable.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by SO00 on Mar 21, 2021

Andromeda18

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Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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SO00

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Reply 2 on: Mar 21, 2021
Thanks for the timely response, appreciate it

laurnthompson

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Reply 3 on: Yesterday
Gracias!

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