= N2 H2(g) N2(g) NH3(g) + Initial Change Final

Q: When this equation is balanced with the smallest set of whole numbers, what is the coefficient for…

A: A chemical equation is said to be balanced, if the number of atoms of each element or compound is…

Q: Is it correct to say that only one observable change accompanies a single chemical reaction?

A: Is it correct to say that only one observable change accompanies a single chemical reaction? Answer…

Q: OT₂ > Ti Or, >₂ it cannot be determined O 7₁-7₂ Kinetic Energy Number of Molecules with a Particular…

A: Correct option is  E) T2>T1

Q: Coffee-cup calorimetry is carried out at O constant tenmperature O constant volume O constant…

A: A coffee cup calorimeter is frequently used to determine the specific heat of a solid and the heat…

Q: When energy is a reactant in a chemical reaction, the reaction is said to be O neothermic O…

A: Thermodynamics is the branch of chemistry that mainly deals with the heat transfer between system…

Q: ✓14 15 16 ✓17 18 19 20 2 Nitric acid can be formed in two steps from the atmospheric gases nitrogen…

A:

Q: For the species in the reaction: 2Co(s) + H2(g) 8PF3(g) → 2HCo(PF3)4(l), which component is ΔH0f…

A: component is ΔH0f equal to zero is given below

Q: A chemist went on a trip to Japan to obtain a sample of chalcocite (copper (I) sulfide), one of the…

A:

Q: Exothermic reactions have a positive enthalpy change. O True O False

A: The solution is as follows:

Q: 6. A neutralization reaction occurs when 120.00 mL of 0.500 mol/L L¡OH and 160.00mL of 0.375 mol/L…

A: #6: Since the 53.1 kJ heat energy is on the product side, heat is released during the reaction and…

Q: Calculate ΔH for the reaction             C2H4(g)   +   6F2(g)  ⟶   2CF4(g)   +   4HF(g) given the…

A: Multiplying 2 to reaction 1 and reaction 2 and than adding them will give the net reaction as 2…

Q: The following diagram represents the endothermic reaction at equilibrium at 25°C: heat +A(g) →2B(g)…

A: we have to select the correct representation of the system at equilibrium when temperature is 50°C

Q: Calculate the number of moles of NaOH used in reactions 1 and 2.

A: Number of moles = Mass of solute Molar mass of solute

Q: At a certain temperature, the following reactions have the constant shown:   N2 (g)  + 2O2(g) --->…

A: For the given reactions the Kc can be calculated as: (a) 2NO2(g)→N2(g)+2O2(g) As per the given…

Q: 4NH3 (g) + 502(g) = 4NO(g) +6H2O(g) NO][H,O] [NH3][O2] K. = O Ko K. = [NH3][O2] K. NO H,O] O Ke [NO)…

A: The given chemical equation is; 4NH3(g)+5O2(g)⇌4NO(g)+6H2O(g)

Q: 2CH₂(g) +30₂(g) (g) Y: 2CO(g) + O₂(g) →→→→2CO₂(g) X: X X He Z= 2CO(g) + 4H₂O AHx=-1038 Write the…

A: X = 2CH4(g) + 3O2(g) ----> 2CO(g) + 4H2O(g)   ∆Hx = -1038 kJ Y = 2CO(g) + O2(g) ----> 2CO2(g)…

Q: heat ...

A:

Q: 7. Suppose you have an endothermic reaction with Keg = 1x 103. How could you adjust the temperature…

A:

Q: Consider the reaction2H2+O2⟶2H2OΔ?rxn=−484kJWhich answer best describes the transfer of heat that…

A: In the given reaction, when 2 moles of H2 reacts, reaction enthalpy is:

Q: Consider a simple mass balance model where 100 CO2 molecules are released into the atmosphere from…

A: Given data, CO2 molecules released into the atmosphere = 100 Fraction of CO2 in biosphere = f…

Q: 17. Under certain circumstances, carbon dioxide, CO2(g)CO2(g), can be made to react with hydrogen…

A: Using limiting reagent can be decided by the stoichiometric equivalent needed and produced.

Q: Consider the following equation for the combustion of acetone (C3H6O), the main ingredient in nail…

A: 1 mol of acetone releases 1790 kJ heat.  We have to calculate the heat released by complete…

Q: 3. 50.0 g hydrogen gas is placed in a 2.0 L flask at constant temperature. The flask has a smal hole…

A: At constant temperature and pressure, the volume of gas is directly proportional to the number of…

Q: All reactions are endothermic. O True O False

A: All reaction are endothermic, this statement is totally false.

Q: Consider the reaction: 2H₂O(1) 2H₂(g) + O₂(g) Using standard thermodynamic data at 298K, calculate…

A: Enthalpy change of reaction (∆H) is calculated from enthalpies of formations of Products and…

Q: How much heat is released if 2.00 moles CF2Cl2 reacts with 70.0 g F2 with a 75.0 percent yield?…

A: The reaction taking place is  CF2Cl2 + F2 ------> CF4 + Cl2…

Q: [1] TRUE OR FALSE The higher the percent conversion of a reaction, the lower is the temperature of…

A: The rate of a reaction is directly proportional to the temperature of the reaction. The higher the…

Q: The rusting of iron is an exothermic reaction, 4 Fe (s) + 3 O₂ (g) → 2 Fe₂O₃ (s). When the system is…

A: When factors like concentration, pressure, temperature, inert gases that affect equilibrium are…

Q: Phosphorus pentachloride decomposes according to the chemical equation…

A: First we would calulate initial concentration of PCl5 and draw an ICE table. Then using Kc…

Q: N2(g) + 3H2(g) → 2NH3(g) AH° rxn=-91.8 kJ Based on the above reaction, in order to increase the…

A: The given reaction is N2(g) + 3H2(g) → 2NH3(g) with a change in enthalpy (ΔH° rxn) of -91.8 kJ. This…

Q: None

A: Step 1:To determine, let's analyze this reaction using Le Chatelier's Principle : Le Chatelier's…

Q: interpret this graph and its microscopic view. (Calorimetry)

A:

Q: Vinyl chloride, one of the reagents used to make the common plastic polyvinyl chloride (PVC) is…

A: The enthalpy change of a chemical reaction can be calculated by the standard heat of the formation…

Q: This reaction is exothermic. B Reactants |AH Products Reaction Progress Select one: True False…

A: True ,the reaction is exothermic .

Q: The temperature of the surrounding increases during a chemical reaction. Was the reaction endo- or…

A: The chemical reactions which are accompanied by the absorption of heat are known as endothermic…

Q: How much energy is required to decompose 800 gg of PCl3PCl3, according to the reaction below? The…

A: Phosphorus trichloride decomposes into phosphorus and chlorine gas. The equation for the balanced…

Q: سكر @ B C D E CH3OH CH3OH heat CH₂ONa heat (CH3)3COK heat Ⓒ Done

A: An E2 elimination reaction shows the simultaneous deprotonation by a base and the removal of a…

Q: "H CO₂Et NaOEt Et₂O

A: The Claisen reaction or Claisen condensation is a carbon–carbon bond forming reaction. In this…

Q: 5 40 Listen When the following equations are balanced using the smallest possible integers, what…

A:

Q: What is the ΔH for the over all reaction in kJ/mol?

A:

Q: Use Reaction 1. Determine the mass, in grams, of chlorine gas consumed (with excess H₂) when 1,479.0…

A:

Q: convert 123 J to calories 515 cal 34.2 cal 443 cal 29.4 cal

A: Given  123 J

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.