C3H8 + 5O2 → 3CO2 + 4H2O + 2210kJ Classify this reaction as endothermic or exothermic. Calculate the enthalpy of reaction if 5 moles of O2 are combusted

Q: 23. Use the following information to determine the enthalpy for the reaction shown below. CS2(1) +…

A: C(graphite) + 2S(s) → CS2(l)                        Formation of CS2(l)= ∆H∘(CS2)= 87.9 kJ    CS2(l)…

Q: Determine the mass of CO2 produced by burning enough propane to produce 114 kJ of heat. C3H8(g) +…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: Calculate the standard enthalpy for the reaction: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)

A: Let us denote the given reactions by reaction 1,2,3, and 4 from up to down respectively. Now we have…

Q: Given the following reaction, calculate the enthalpy of reaction. Identify whether the reaction is…

A:

Q: Given the following data NH3(g) N₂(g) + H₂(g) 2H₂(g) + O₂(g) → 2H₂O(g) calculate AH for the reaction…

A:

Q: Calculate the standard enthalpy change for the reaction 2Al(s) + Fe2O3(s) → 2Fe(s) + Al2O3(s)…

A: The question is based on the concept of Hess's law.     It states that the net enthalpy change…

Q: A chemist measures the enthalpy change AH during the following reaction: 2 KCl(s) + 30,(g)→2 KC1O…

A:

Q: Explain why each of the following chemical equations is not a correct formation reaction: (a) 4…

A: a.

Q: For the highly exothermic reaction H2(g) + 1/2 O2(g) → H2O(g) qrx =DHrx = -242 kJ, What quantity of…

A: Given: no of moles of H2 =17.9molno of moles of O2 = 1.13 molThe reaction is:H2(g) + 1/2 O2(g) →…

Q: Determine whether the reaction is exothermic or endothermic based on the enthalpy change of the…

A: consider the chemical reaction as, For a chemical reaction, the difference between the total amount…

Q: Iron can be converted to Fe2O3 according to the reaction below. How much heat (in kJ) is required to…

A: Iron can be converted to Fe2O3 according to the given reaction. Amount of heat (in kJ) required to…

Q: 3. Draw an or find an image of an endothermic reaction or an exothermic reaction. Explain what makes…

A: Answer: When during a chemical reaction heat gets released then such reactions are called as…

Q: 2. Carbon dioxide can be formed from the reaction of carbon monoxide and oxygen. How many moles of…

A: (2)  2 CO + O2 ⟶ 2CO2  ∆H = -ve exothermic (heat released)       Here 2 mol CO produce = 787 kj…

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.