A liquid compound containing only hydrogen and oxygenis placed in a flask. Two electrodes are dipped into theliquid and an electric current is passed between them.Gaseous hydrogen forms at one electrode and gaseousoxygen at the other. After a time, 14.4 mL hydrogen hasevolved at the negative terminal, and 14.4 mL oxygen hasevolved at the positive terminal.(a) Assign a chemical formula to the compound in thecell.(b) Explain why more than one formula is possible as theanswer to part (a).
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.
A liquid compound containing only hydrogen and oxygen
is placed in a flask. Two electrodes are dipped into the
liquid and an
Gaseous hydrogen forms at one electrode and gaseous
oxygen at the other. After a time, 14.4 mL hydrogen has
evolved at the negative terminal, and 14.4 mL oxygen has
evolved at the positive terminal.
(a) Assign a chemical formula to the compound in the
cell.
(b) Explain why more than one formula is possible as the
answer to part (a).
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
