Advances in Social Science, Education and Humanities Research (ASSEHR)
By Jusniar, Endang Budiasih, Effendi, and Sutrisno
“The Misconception of Stoichiometry and Its Impact on the Chemical Equilibrium”
Publisher: Atlantis Press
227
Pp. 141
2019
The Misconception of Stoichiometry and Its Impact on the Chemical Equilibrium
Type: Empirical
Data collection method: Survey
Number of subjects, range: Large — 31 or more
Grade and age of subjects: 9th-12 grade — under 17-18 years
Misconception of Stoichiometry
- The number of moles of reactant and product is proportional to the number of index elements in substances.
- The number of moles of substances is inversely proportional to the reaction coefficient.
- Dissociation reactions are reactions in which a bond breaks between molecules.
- The increasing of concentration will greater surface area, so as to give rises a greater number of effective collisions.
- In exothermic reaction, there is an increase in reaction enthalpy.
Misconception of Chemical Equilibrium
- The rate of the increasing number of reactants in equilibrium conditions is faster than the reducing number of products.
- The rate of forwarding reaction will be higher than the rate of the reverse reaction under equilibrium conditions.
- The rate of forwarding and reverse reaction remains in 20.3 equilibrium because the concentration of substances has the same price.
- The increasing volume of gas equilibrium system will shift 32.2 the equilibrium to a larger number of subscripts an element.
- Catalysts can increase the activation energy, so that the 23.3 forward reaction rate is faster than the reverse reaction rate.