The lead-acid storage battery is the oldest rechargeable battery in existence. It was invented in 1859 by French physician Gaston Plante and still retains application today, more than 150 years later. There are two reactions that take place during discharge of the lead-acid storage battery. In one step, sulfuric acid decomposes to form sulfur trioxide and water: H,SO,() So;(9) + H,O(1) AH=+113. kJ In another step, lead, lead(IV) oxide, and sulfur trioxide react to form lead(II) sulfate: Pb(s) + PbO,(s) + 2 SO3(g) → 2 PbSO,(s) AH=-775, kJ Calculate the net change in enthalpy for the formation of one mole of lead(II) sulfate from lead, lead(IV) oxide, and sulfuric acid from these reactions. Round your answer to the nearest kJ. kJ

Q: What is the enthalpy of formation (AH°;) of NaHCO3(s) from its constituent elements?

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Q: How many moles of KCIO, solid must be reacted according to the following balanced chemical reaction…

A: Potassium chlorate decomposes into potassium chloride and oxygen gas. The equation for the balanced…

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A: Thermochemistry: It is the study of the heat energy changes that are associated with chemical…

Q: ∆H for the reaction

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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: Al(OH),(s) Al°* (aq) + 30H (ag) x x.=. = +, log. cos, K = [AP][oH]³ 10

A: The equilibrium constant (K) is the ratio of the equilibrium concentration of the products over the…

Q: Aircraft de-icing agents, such as propylene glycol [1,2-propanediol; CH₃CH(OH)CH₂OH; d=1.036 g/mL],…

A: CH3CH (OH) CH2OH has 2 adjacent Hydroxyl groups attached having a molar mass of 76.09 gm.

Q: What is the AH° for the following reaction (in kJ/mol)? 2 Na (s) + 2 H2O (1) → 2 N2OH (ag) + H2 (g)…

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Q: d. +213.4 kJ

A: Enthalpy of formation of a compound is the change of enthalpy during the formation of products from…

Q: How many grams of CaHe liquid must decompose according to the following chemical equation to…

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Q: LIOh for each substance in Appendix C: (a) H2O2(g), (b) CaCO3(s), and then 1OUR up new tion any, (c)…

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A: Given: Volume of water = 25 mL of water density = 1.00 g/mL Temperature change= from 25 °C to 85 °C…

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A:

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: What volume of benzene (C6H6, d= 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5 x…

A: Combustion reaction of benzene  2C6H6 + 15O2 ....> 12CO2 + 6H2O It is exothermic reaction.  dH =…

Q: The pH of an aqueous solution of 0.259 M hydrosulfuric acid, H2S (aq), is .

A: Given Concentration of H2S = 0.259 M

Q: Write the net equation for precipitation of AgI when aqueous solutions of AgNO3 and Nal are mixed.…

A: AgNO3 react with NaI to give AgI.

Q: The FDA-recommended daily allowance for fat in a 2,000 calorie diet is 77g. A. What is the max…

A: Given Details:    The total daily allowance calorie  = 2,000 Calorie    Total fat  =  77g.…

Q: 36. The standard enthalpy (AH) for the reaction of CaCO, with HCI CaCo, + 2 HCI → CaCl, + H,0• CO, +…

A: Enthalpy is a thermodynamic quantity which are extensive property

Q: Comparing the two quantities based on the given condition, which is greater I or II? or are they…

A: We will determine the Molecular weight of each of the following

Q: Calculate ∆G  (in kJ) at 35.4oC for a reaction that has Keq = 105

A: Given: Temperature = 35.4 oC And Keq = 105

Q: Calculate AH for the following reaction: N2 + 02 2NO AH=? ->

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Q: Write a balanced chemical equation for the standard formation reaction of liquid acetic acid…

A: The compound given is HCH3CO2 liquid.

Q: The reaction of quicklime, CaO, with water produces slaked lime, Ca(OH)2, which is widely used in…

A: (a) Given reaction is, Based on the above reaction: 1 mole of quicklime (CaO) releases 350 kJ of…

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: the enthalpy for the decomposition of liquid water into gaseous hydrogen and oxygen

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Q: The Ecell of a reaction was found to be +0.78 V. What is the ∆G° of the reaction? ne=1 mol

A: Redox reaction are those in which both oxidation and reduction reaction occurs simultaneously.

Q: Determine how much energy in kJ is absorbed when 6.03 g of HA, the limiting reactant, are completely…

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

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Q: calculate the reaction enthalpy of this reaction under standard conditions:2HNO2(g)+O2(g)→2HNO3(g)

A: The enthaply of the reaction is calculated as follows,

Q: How can we determine ΔH for the reaction between HCl and NaOH from the experimental results if we…

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Q: When sodium acetate, CH3COONa(s), is added to CH3COOH (aq), why does the pH of the solution…

A: The dissociation of sodium acetate in aqueous solution of acetic acid can be shown as follows-

Q: Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of…

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Q: Determine the value of heat of reaction for the following: Cl(g) +03(g) → CIO(g) +O2(g) kJ AH°rxn=

A: Given: The given reaction is: Cl(g)+O3(g)→ClO(g)+O2(g) The standard values of enthalpy of formation…

Q: Na(s) + ½ Cl2(g)   ¾®   NaCl(s)                       H°rxn =  –411.12 kJ/mol If 1.00 kg of sodium…

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Q: What are the requirements for a formation reaction? Select one or more: a. the formation of one…

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Q: At 1 atm and 78 oC, which of the following reactions does have ∆Hrxno < ∆Urxno, where ∆Hrxno is the…

A: The relationship between the ∆Hrxno and ∆Urxno is given by, =&gt; ∆Hrxno = ∆Urxno + (∆ng) RT where R…

Q: 2. Express the reaction enthalpy for the reaction: B + C →5E +z" 1 1 E +5F in terms of the reaction…

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Q: Calculate ΔΗ°rxn for the combustion of carbon monoxide, producing CO2 in KJ.…

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Q: What is the electrostatic potential energy (in joules) between an electron and a proton that are…

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Q: 2NOCI(g) → N2(g) + O2(g) + Cl½(g) given the following reactions: N(8) + 0,(g) NO(g) + ¿Cl,(g) NO(g)…

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Q: Calculate the standard enthalpy change for the following reaction conducted at 25°C: 2MGO(s)→ 2Mg(s)…

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Q: it is determined through a titration experiment that the molarity of acetic acid, CH3COOH, in…

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Q: Write a balanced chemical equation for the standard formation reaction of liquid acetic acid…

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Q: Write a full balanced equation for the chemical reaction that occurs when solid magnesium chloride…

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Q: standard enthalpy change for this reaction.

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Q: There are two steps in the usual industrial preparaton of acrytic acid, the immediate precursor of…

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Q: Predict the products and balance the following reactions, including phase symbols.   a. Complete…

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Q: Calculate the enthalpy change for the thermite reaction: 2Al(s) +Fe2O3(s)→2FE(s) + A½O3(s), A¡H° =…

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Q: Calculate the standard enthalpy change for the reaction at 25 ∘C. Standard enthalpy of formation…

A: Given reaction is : HCl(g) + NaOH(s) ⟶ NaCl(s) + H2O(l)

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.