Which number represents the enthalpy change in the reaction? 2 Reaction Coordinate 90 Potential Energy

Q: O exothermic Is this reaction exothermic, endothermic, or neither? O endothermic O neither If you…

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Q: Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + O₂(g) → 2NiO(s) AH…

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Q: how much nitrogen monoxide is formed if 505 kJ of heat are used in its production? N2(g) + O2(g)…

A: N2(g) + O2(g) ==> 2 NO (g)

Q: Which number represents the enthalpy change in the reaction? Reaction Coordinate Potential Energy

A: The potential energy graph explains the energy change that occurs during a chemical reaction. This…

Q: Calculate ΔH (in kJ/mol) for the reaction described by the equation. 6 NH3(g) + 4 O3(g) → 3 N2O(g) +…

A: Given Chemical reaction: 6 NH3(g) + 4 O3(g) → 3 N2O(g) + 9 H2O(l)

Q: How much heat (in kJ) is absorbed in the process of making 0.877 mol of CF, from the following…

A: The given chemical reaction is as follows,C(s)+2F2(g)→CF4(g)       ∆H° =141.3 kJmolnumber of moles…

Q: A 4.81 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Solution :        The heat of dissolution is defined as an enthalpy change related to the…

Q: In the reaction, C(s) + O2(g) → CO2(g), the enthalpy of formation CO2(g) is lower than enthalpies of…

A: Since the net enthalpy of the reaction  C(s) + O2(g) → CO2(g),   is given by  enthalpy of reaction =…

Q: How many kilojoules of heat will be released when exactly 1 mole of iron, Fe, is burned to form…

A: The reaction for standard enthalpy of formation of Fe2O3 is depicted by equation.

Q: How much heat (in kJ) is absorbed in the process of making 0.961 mol of CF, from the following…

A: Let's observe the reaction first Here 1 mole of C reacts with 2 moles of F2 to form 1 mole of CF4

Q: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…

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Q: Determine the enthalpy (in kJ/mol) or the reaction C(s) + 2 SrO(s) → CO2 (g) + 2 Sr(s).

A: Given  two enthalpies for two reactions are -1184 and 384 KJ/mol We have to determine enthalpy for…

Q: Which of these are TRUE for ENDOTHERMIC reactions? 1. The temperature of the surroundings is…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: calculate the standard enthalpy change for each of the following reactions: (a) N2(g) + O2(g) ⟶…

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Q: Determine the total heat absorbed by the reaction, in kJ, if 2.50 g of O2 is required to fully…

A: Heat absorbed by the reaction = 89.4kJ.mol The heat of Formation of SO3(g) = -204.1kJ/mol

Q: The enthalpy change for the reaction: 2H2(g)+ O2(g) → 2H2O(g) is -483.6 kJ. Determine the enthalpy…

A: The enthalpy change for the reaction: 2H2(g)+ O2(g) → 2H2O(g) now, for the following reaction 4H2(g)…

Q: Calculate ΔH (in kJ/mol) for the reaction described by the equation. 6 NH3(g) + 5 O3(g) → 6 NO(g) +…

A: Tha delta H represents the enthalpy change during the reaction. Now if the enthalpy change is…

Q: . How much heat is absorbed when 60g of mercury (II) oxide reacts? 2HgO2Hg + O₂ AH = 181.4 kJ

A: Given :-  2HgO → 2Hg + O2       ∆H = 181.4 kJ  To calculate :-  Amount of heat absorbed by 60 g of…

Q: 2. Mercury (II) oxide is a reddish mineral that is used as the cathode in mercury batteries. It is…

A: In the above question the heat energy require to prepare 2 mole Hg have given . We have to calculate…

Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: The standard enthalpy of formation is defined as the change of enthalpy during the formation of 1…

Q: Consider the reaction of sodium metal and water. 2Na(s) + 2H20(1) → 2NaOH(aq) + H2 (g) AH = -369 kJ…

A: 2Na(s)+2H2O(l) --->2NaOH(aq)+H2(g) ∆H = -369KJ On reversing the direction of reaction, sign of…

Q: 8. Consider the reaction: C,H1,O(s) + 60;(g) → 6CO:(g) + 6H;O(!) , the heat change q for this…

A: The given equation is, C6H12O6s+6O2g→6CO2g+6H2Ol The value of q is -2800 kJ mol-1. The…

Q: 12. Consider the following process. + 2H,O(e) AH = -802 kJ %3D CH4 (8) + 202 (8) 2 CO2 (8) A) Is the…

A: We have to predict the change in enthalpy and it's nature.

Q: Which is the correct enthalpy level diagram for the reaction: CaO(s) + 3C(s) + 462.3 kJ → CaC2(s) +…

A: When a reactant converts into the products , there is some heat released or absorbed by the…

Q: calculate the heat of the reaction 3 H2(g) + O3(g) 3 H2O(g)

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Q: The standard enthalpy change for the following reaction is -112 kJ at 298 K. 2 Na(s) + H2(g)…

A: The standard enthalpy change for this reaction at 298 K has to be determined

Q: If a reaction is exothermic, then O AS° > 0 O AH° 0

A: An exothermic reaction is a reaction in which heat is released. The products will be more stable…

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: Which one of the following reactions would produce the largest amount of heat per mole of oxygen? A.…

A: CH4 (g) + 2O2 (g) →CO2 (g) + H2O (g)                      ∆H° = -802 kJ/mol 2Pb (s) + 3O2 (g) → 2…

Q: Calculate the standard enthalpy for the reaction: 4NH3(g) + 502(g) → 4NO(g) + 6H20(g), given the…

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Q: calculate the enthalpy change @ 298 K  for the reaction 2H2 (g) + O2(g)→2H2O(g).

A: The heat change in a particular reaction is known as enthalpy change (∆H). It can have a positive…

Q: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…

A: Reaction :- KCl (s) -> K+ (aq) + Cl- (aq) Mass of KCl added or used = 11.8 g  Moles of KCl = mass…

Q: Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or…

A: Mass of KOH = 10.8 g Moles of KOH = Mass / Molar mass = 10.8g / 56 g/mol = 0.193 mol Mass of…

Q: Which statement about the reaction illustrated in the diagram is true? (B) (A] (C) (D) O The energy…

A: Which statement is true?

Q: At 10°C, Keq for a reaction is 100. At 30°C, Keq = 10. Does enthalpy increase or decrease during the…

A: for a equilibrium reaction,  A⇌B       ∆H According to van 't Hoff equation. lnK1K2=∆HR(1T2-1T1)

Q: C. Ex: Calculate the heat produced by reacting 12.6 g of hydrogen peroxide, H,02. 2 H2O2(aq) → 2…

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Q: For which one of the following is the enthalpy of the reaction the same as the enthalpy of…

A: Since standard enthalpy of formation of a compound is the change in the standard enthalpy when one…

Q: Which number represents the enthalpy change in the reaction? Reaction Coordinate 2. 3. Potential…

A: Enthalpy change of a reaction in a energy profile diagram:

Q: Given the following reactions: N2(g) + 202(g) –→ 2NO2(g) AH = 66.4 kJ 2NO(g) + O2(g)→ 2NO2(g) AH =…

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Q: 12. Consider the following reaction. CH3CH,Br + H2O – CH;CH2OH + HBr (c) Calculate the enthalpy of…

A: The balanced reaction given is, => CH3CH2Br + H2O --------> CH3CH2OH + HBr

Q: Draw an enthalpy diagram for the following reaction: N2(g) + O2(g) → 2NO(g) ΔH = 180 kJ Be…

A: An enthalpy diagram for the following reaction has to be drawn. N2(g) + O2(g) → 2NO(g)

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Ni(s) + O2(g)–→2N¡O(s) AH°…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

Q: An important reaction in the production of sulfuric acid is SO2 02 (g) → SO3 (g) Calculate the…

A: The enthalpy change (∆H) of a chemical reaction is mathematically expressed as:…

Q: 1. What is the enthalpy of reaction per mole of HCl (g) in the following reaction.( Don't have to…

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Q: What is the enthalpy change when 47.6 g Al completely react, given the reaction below?   The molar…

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Q: How much heat is liberated at constant pressure if 0.938 g of calcium carbonate reacts with 73.2 mL…

A: Since molar mass of calcium carbonate = 100 g/mol Hence moles of calcium carbonate = mass / molar…

Q: Calculate the standard heat of reactions, ΔHo, for the following using standard heat of formation…

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Q: Ammonia is made from nitrogen and hydrogen. The enthalpy change in the reaction is -92 kJ/mole. The…

A: In this reaction  One molecule of nitrogen and three molecules of hydrogen reacts to form two…

Q: What is the value of the enthalpy change per mole of HCI(g) produced? O 242 kJ O -93 kJ O -121 kJ O…

A: The given reaction is: The steps are:

Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) + O2(g) →2NO(g) AH° =…

A: According to Hess's law, when a reaction occurs in more than one step than the enthalpy change of…

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.