Chemistry, 24.03.2021 04:20 tydariousgamer
B. The heat of reaction for the process described in (a) can be determined by applying
Hess's law. The heats of reaction shown in the table below can be obtained
experimentally or looked up in tables of enthalpy data. Which two of these heats of
reaction would be the easiest and safest to measure in the laboratory, and which two are
better obtained through reference sources? Why? Hint: Consider whether a reaction
takes place in aqueous solution or instead involves noxious gases.
Reaction
Heat of reaction
NH3(g) β NH3(aq)
AH= -34.64 kJ/mol
NH3(aq) + HCl(aq) β NH4+ (aq) + Cl(aq)
AH= -51.6 kJ/mol
HCI(g) β HCl(aq)
AH = -75.14 kJ/mol
AH = +14.8 kJ/mol
NH4Cl(s) β NH4+(aq) + Cl(aq)
Answers: 3
Chemistry, 22.06.2019 15:30
Draw the lewis dot structure for each of the following polyatomic ions
Answers: 1
Chemistry, 22.06.2019 17:00
Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.
Answers: 1
B. The heat of reaction for the process described in (a) can be determined by applying
Hess's law....
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