The space mission landed a probe on an alien moon and found that its surface temperature was about -320.44°F. State the phase (solid, liquid, vapor) of each of the following substances on Titan's surface, based on their melting point and boiling point. This temperature K. 18: Substance Nitrogen. N₂ Water, H₂O Methane, CH, Melting Point (K) 63.29 273.15 93.10 Boiling Point (K) 77.35 373.15 109.10 Phase
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![The space mission landed a probe on an alien moon and found that its surface
temperature was about -320.44°F. State the phase (solid, liquid, vapor) of each of the following
substances on Titan's surface, based on their melting point and boiling point. This temperature
K.
18:
Substance
Nitrogen. N₂
Water, H₂O
Methane, CH,
Melting Point (K)
63.29
273.15
93.10
C in CH₂O
Cr in Cr³
Boiling Point (K)
77.35
373.15
109.10
Phase
A redox reaction occurs under acidic conditions between the dichromate ion and
methanol as described by the incomplete equation below:
CH-OH (aq) + Cr₂O² (aq) → CH₂O (aq) + 2 Cr³- (aq)
Oxidation Number for Species Write complete balanced redox equation in the space below.
C in CH₂OH
Cr in Cr₂0-²
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