Which of the following is false regarding the reaction of 130.8 g of Zn with a sufficient amount of HCl (in water)? (Hint: It takes +2 valency in Zn compounds. Zn: 65.4 g/mol) a) Balanced Reaction: Zn+2HCl(in water)→ZnCl2+ H2 B) The formula of the compound to be formed is ZnCl2 NS) 2 g of H2 gas is released D) One of the products to be formed is Zinc chloride compound. TO) 4 moles of HCl are needed to completely deplete the Zn element.
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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Which of the following is false regarding the reaction of 130.8 g of Zn with a sufficient amount of HCl (in water)?(Hint: It takes +2 valency in Zn compounds. Zn: 65.4 g/mol)
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We first have to balance the reaction. Since HCl is given in sufficient amount so limiting reagent is Zn. So using the balance reaction we can calculate the rest.
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