Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the mixture is poured down a clogged drain, the following reaction occurs: 2N2OH(ag) + 2AI(9) + 6H,O(1) 2NaAl(OH),(aq) + 3H2(2) The heat generated in this reaction helps melt away obstructions such as grease, and the hydrogen gas released stirs up the solids clogging the drain. Calculate the volume of H, formed at 31.5°C and 1.00 atm if 3.36 g of Al is treated with an excess of NaOH. L.
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.
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Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When
the mixture is poured down a clogged drain, the following reaction occurs:
2N2OH(aq) + 2A1(s) + 6H,O(1) 2NAAI(OH),(aq) + 3H2(g)
The heat generated in this reaction helps melt away obstructions such as grease, and the hydrogen gas
released stirs up the solids clogging the drain. Caleulate the volume of H, formed at 31.5°C and 1.00
atm if 3.36 g ofAl is treated with an excess of NaOH.
L.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbfa6ec98-1975-4709-875f-4f8c179b58af%2F7bf39efd-3975-4726-806b-3efce2d8097a%2Fh9h0ec_processed.jpeg&w=3840&q=75)
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