For the reaction O_2(g)+2Hg_(s)----->2HgO_(s) ÎH=-20.2 Kj/mol and ÎS=-73.1 J/K mol

which of the following statements is true and why (pleaseexplain) ?

A) the reaction is only spontaneous at low temperatures

B) the reaction is spontaneous at all temperatures

C) ÎG^o becomes less favorable as temperatureincreases

D)The reaction is spontaneousonly at high temperatures

E) The reaction is notspontaneous at any temperature

please explain

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Elin HesselLv2

20 Jan 2019

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Chemistry Study Group

Consider a reaction that has a negative ÎH and a negative ÎS. Which of the following statements is true?

	A.	This reaction will be spontaneous only at high temperatures.
	B.	This reaction will be spontaneous at all temperatures.
	C.	It is not possible to determine without more information.
	D.	This reaction will be spontaneous only at low temperatures.
	E.	This reaction will be nonspontaneous at all temperatures.

QUESTION 9

Which has the lowest entropy?

1 points (Extra Credit)

QUESTION 10

Which statement is true about the formation of CaCO3(s) from CaO(s) and CO2(g) at 1.00 atm?

CaO(s) + CO2(g) â CaCO3(s) ÎHÂ° = -178.7 kJ and ÎSÂ° = -150.4 J/K

		The reaction is spontaneous at all temperatures.
		The reaction is spontaneous at high temperatures.
		The reaction is spontaneous at low temperatures.
		The reaction is not spontaneous at any temperature.