(а) Н. + Н—О—О—н —> `H. нн Н-О—С—С—О—Н нн

Q: The standard enthalpy change for the following reaction is -496 kJ at 298 K. 2 K(s) + O2(g)…

A: Introduction :  We need tell the enthalpy change for the reaction when reaction get reversed . Given…

Q: Given: Phosgene, COCl2, can be formed by the reaction: 2CHCl3(l)  + O2(g) ⟶ 2COCl2(g)  + 2HCl(g).…

A: Generally the enthalpy change of reaction is determined by using following formula.

Q: The standard enthalpy change for the following reaction is 986 kJ at 298 K. Ca(OH)2(9) → Ca(s) +…

A: The given reaction is  Ca(OH)2 -------> Ca(s) + O2(g) + H2(g)  Delta H = 986 kl/mol

Q: Given the reaction: 4 Fe(s) + 302(g) → 2 Fe203(s) A H= -1652 kJ, what is the enthalpy change when…

A: for a given reaction, 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) enthalpy change, Δ H = -1652 KJ

Q: Consider the following two reactions: N2(g) + 202(g)2NO:(8) AH = +88 kJ Na(g) + 20:(g) N20.(g) AH =…

A:

Q: has

A: We wil use Clausius clapreyon Equation

Q: The standard enthalpy change for the following reaction is 35.6 kJ at 298 K. L(s) + Cl2(g) – 2…

A:

Q: How will forgetting to start recording the temperature until after adding the HCl to the NaOH in the…

A: The heat released during the reaction can be calculated as follow,

Q: he Keq of a reaction is 4 x 10⁻⁷. At equilibrium, the... * reactants are favored…

A: The value of the equilibrium tells us whether the reactants are favored or the products are…

Q: ₂0 and 0.444 J/g.°C for Fe. eat capacity of the calorimeter = 3/°C

A: The calorimetry rule says, Heat lost by iron = Heat gained by calorimeter + water Heat lost=mc∆T…

Q: N2 (g) + O2 (g) 2 NO (g) AH°rxn = +197 kJ %3D NO2 (g) → NO (g) + 1/2 O2 (g) AH°rxn = +89.2 kJ What…

A:

Q: Calculate the enthalpy of reaction for the following reaction: NaOH(s) + HCI(g) ----> NaCI(s) +…

A: Given  Enthalpy of Formation of NaCl(s)   = - 411 KJ/ mole  Enthalpy of formation of H2O(g)    =…

Q: 1. Determine the amount of energy released when 93.6 g of liquid butane, C,H10(1 combusted.…

A: The given data: The mass of liquid butane = 93.6 g The enthalpy of formation of the given species is…

Q: The standard enthalpy change for the following reaction is -104 kJ at 298 K. 3 C(s,graphite) +4…

A:

Q: Calculate the standard enthalpy change for the reaction below. 12NH3(g) + 21O2(g)  8HNO3(l) +…

A:

Q: Predict whether the entropy of the following reaction will increase or decrease. Explain why you…

A: If in the reaction, all the species present are in only gaseous state, then entropy can be related…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g) C,H10(9) AH°…

A:

Q: The standard enthalpy change for the following reaction is 470 kJ at 298 K. 2 CH3CH,OH(g) 4…

A: We have to calculate the enthalpy change for given reaction.

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g)→C4H10(g) AH°…

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

Q: 6. Calculate the formation enthalpy (AHorm) for benzene (C6H6). Is this reaction endothermic or…

A:

Q: 3. In the following reaction, the products are not favoured at room temperature, but are favoured at…

A: Given-> CO2(g) + H2(g) <------> CO(g) + H2O(g)

Q: 6A + 2C 6D Determine the enthalpy(AH) in kJ of the above reaction using the reactions below: 6B 2C…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Hg(l) + O2(g)2HGO(s) AH° =…

A: the solution is as follows:

Q: In an equilibrium reaction with a Keq of 1 x 10⁸, the... *     reactants are favored       reaction…

A: This is the concept of chemical equilibrium

Q: 1. Why are styrofoam cups often used as improvised calorimeter? What would be the effect on the…

A: We know that, The specific heat capacity of Styrofoam is calculated experimentally as 1.131 J/goC.…

Q: what is the enthalpy change for the reaction Ba Halg) +30al9) 7 B,03(5) +3H,041) AH=? a.) -239 HJ…

A: The balanced reaction taking place is given as, => B2H6 (g) + 3 O2 (g) ----------> B2O3 (s) +…

Q: 13. From the table of standard heats of formation, ΔHf°, values, calculate ΔH° for the combustion of…

A: The balanced equation for the combustion of ethanol is

Q: 5. Calculate the value of ΔSo for the formation of calcium chloride from its constituent elements,…

A:

Q: If a reaction is exothermic it is spontaneous. True or false

A: In this question, we will discuss About a Reaction is exothermic then it is spontaneous or not means…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Hg(l)+O2(g) 2HBO(s) AH°…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) Sn(s) + Cl2(g)--SnCl2(s)…

A: Hess's law: The enthalpy change of a reaction is equal to the sum of enthalpy changes in each step.

Q: What is the standard enthalpy change for the reaction:  2PbCl2 (s) + O2 (g) --> 2PbO (s) + 2Cl2 (g)…

A: The standard enthalpy change of the reaction can be calculated with the help of the given two…

Q: The standard enthalpy change for the following reaction is 561 kJ at 298 K. Cd(OH)2(s) → Cd(s) +…

A: Cd(OH)2 (s)  -----> Cd(s) + O2(g)  + H2(g)   ∆Ho1 = 561 kJ   ........................(1) Cd(s) +…

Q: Predict the sign, + − or 0, of ASº for each of the following reactions a) Oxygen gas and nitrogen…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H₂(g)-C₂H₂(g) (2)…

A: What is the stadard enthalpy change for the reaction (3)?

Q: The standard enthalpy change for the following reaction is -111 kJ at 298 K. C(s,graphite) + 1/2…

A: For the given reaction, the standard enthalpy change at 298 K is -111 kJ. C (s) + 1/2 O2  (g)  →…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) +…

A: In these types of question, we have to arrange the given two equations, in such a way that it…

Q: Calculate the energy change (in kJ) for the combustion of 62.0 grams of propane?

A: A specific heat quantity is generated on reacting any substance with O2. This heat is generally…

Q: Calculate the enthalpy change for the reaction 2K+ S K28 using the following thermochemical…

A: Given  1)K + S  ->  KS     Delta H = 32.5 KJ 2) KS + K ->  K2S     Delta H = 38.2 KJ    To…

Q: Consider the following two reactions: N2(g) + 202(g) → 2NO2(g) AH = +88 kJ N2(g) + 202(g) → N¿0«(g)…

A:

Q: Given the enthalpies of reaction.    P4 (s)  +  3 O2 (g)  → P4O6 (s)                        ΔH =…

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

Q: Given the standard enthalpy changes for the following t (1) 2Ni(s) + O2(g) 2N¡O(s) AH° = -479.4 kJ…

A: In classical thermodynamics, the difference between the enthalpy of reactants and products is known…

Q: The lower the change in free enthalpy associated with a reaction, the slower this reaction is. True…

A: Change in free energy is associated with spontaneity. The spontaneity of the reaction doesn't define…

Q: The standard enthalpy change for the following reaction is 265 kJ at 298 K. Hg,Cl2(s) →2 Hg(1) +…

A:

Q: 2. When 1.0 g of sodium nitrate was dissolved in 50.0 g of water in a calorimeter at 20.0°C, the…

A: q = mc∆T where q is heat, m is mass of the substance, c is specific heat of the substance and ∆T…

Q: 2. For the following reaction at 25°C, AG° is -118.4 kJ. At what pressure of O2 gas does AG = 0 at…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H₂(9) C4H10(g) AH°…

A: The enthalpy change is a state function and the Hess law states that the change of enthalpy in a…

Q: Given the following combustion reaction and its molar enthalpy of reaction: 2NO(g) + O2(g) 2NO2(g)…

A: Given reaction: 2NO(g) + O2(g) → NO2(g)             ΔHo = -112 KJ

Q: Describe how you would calculate ∆G0′ for the reaction: glucose + 6 O2 = 6 CO2 + 6 H2O. If you were…

A:

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.