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Author Question: The solubility of manganese(II) fluoride in water is 6.6 g/mL at 40C and 4.8 g/L at 100C. Based on ... (Read 79 times)

viki

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on: Feb 15, 2020

Question 1

For the reaction 3 C2H2(g) → C6H6(l) at 25°C, the standard enthalpy change is -631 kJ and the standard entropy change is -430 J/K. Calculate the standard free energy change at 25°C.
◦ -1061 kJ
◦ 948 kJ
◦ -503 kJ
◦ -618 kJ

Question 2

The solubility of manganese(II) fluoride in water is 6.6 g/mL at 40°C and 4.8 g/L at 100°C. Based on these data, what is the sign of ΔH° and ΔS° for the process below?

MnF2(s) ⇌ Mn2+(aq) + 2 F-(aq)


◦ ΔH° is negative and ΔS° is definitely negative.
◦ ΔH° is positive and ΔS° is definitely negative.
◦ ΔH° is positive but the sign of ΔS° cannot be determined from this information.
◦ ΔH° is negative but the sign of ΔS° cannot be determined from this information.
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by viki on Feb 15, 2020

wfdfwc23

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Reply #1 on: Feb 15, 2020
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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viki

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Reply 2 on: Feb 15, 2020
Great answer, keep it coming :)

FergA

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Reply 3 on: Yesterday
Gracias!

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