The ΔrH for the oxidation of solid sulfur to SO3 is -396  kJmol−1 and for the oxidation of SO2 to SO3 is -98.9  kJmol−1 . Find the enthalpy of formation of SO2 under these conditions.

Q: Iodide, I–, is a catalyst for the decomposition of hydrogen peroxide to give water and oxygen gas:…

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Q: When a 4.00 g sample of KSCNKSCN is dissolved in water in a calorimeter that has a total heat…

A: Mas of KSCN = 4.00 g heat capacity = 3.83 kJ⋅K−1 change in temperature = 0.260 K

Q: A student dissolves13.7 g of sodium chloride NaCl in 250.g of water in a well-insulated open cup.…

A: According to the question, Mass of water (m) = 250 g Mass of NaCl = 13.7 g The molar mass of NaCl =…

Q: What is the value of the heat transferred when 0.706 moles of manganese, Mn, are burned to form…

A: To determine the heat transferred when manganese (Mn) is burned to form Mn₃O₄(s) at standard state…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 174. kJ during a…

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Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 239. kJ during a…

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Q: A student dissolves 10.1 g of ammonium chloride (NH4CI) in 200. g of water in a well-insulated open…

A: Given, The mass of the NH4Cl = 10.1 g Mass of the water = 200 g The molar mass of the NH4Cl = 53.49…

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 274. kJ during a…

A: Given:For the given chemical change:Calculate enthalpy change .The change in enthalpy during a…

Q: seM Determine the mass (in g) of O2lg) that was consumed during this

A: A combustion reaction is a type of chemical reaction in which a compound and an oxidant is reacted…

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) → 2HC1(g) AH = -184.6 kJ Reaction 2: 20F2 (g)…

A: -> If ∆H =+ve => reaction is endothermic reaction. -> if ∆H = -ve => reaction is…

Q: A student dissolves 12.7 g of sodium chloride (NaCl)in 250. g of water in a well-insulated open cup.…

A: It is based on the concept of enthalpy of  dissolution of salt Here we  are  required to find the…

Q: A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains…

A: Since the water bath contains 9.80 kg of water at 24.2˚C and heat capacity of water is 4.18…

Q: From the enthalpies of reaction: 2 C(s) + O2(g) → 2 CO(g) ΔH =…

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Q: Which of the following processes are exothermic? 1) Dew evaporates in the morning 2)Gasoline burns…

A: Exothermic reaction are the reaction in which heat is released and endothermic reactions are those…

Q: When a 4.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity…

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Q: When a 7.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

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Q: Given that the enthalpy of neutralization for the reaction of HCl (a strong acid) and NaOH (a strong…

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Q: A student dissolves 12.1 g of lithium chloride (LiCl)in 300. g of water in a well-insulated open…

A: Mass of lithium chloride = 12.1 g Initial temperature, T1 = 21.0 °C Final temperature, T2 = 27.8 °C…

Q: When a 3.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

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Q: Determine the amount of heat (in kJ) associated with the production of 5.91 x 10 g of ammonia…

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Q: You place 15.1 ml of 0.231 M Ba(OH)2 in a coffee-cup calorimeter at 25.00°C and add 59.6 ml of 0.536…

A: The balanced equation is   2 HCl (aq) + Ba(OH)2 (aq) ------> BaCl2 (aq) + 2 H2O (l) Since the…

Q: We want to determine the enthalpy of neutralization of the following reaction. HCl(aq) + NaOH(aq) →…

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Q: Consider the reaction: When a 10.0-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is…

A: The given reaction is : C2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l)        ∆H=-1.37×103 kJ

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 397. kJ during a…

A: The energy difference between the products and reactants is known as the energy change of a…

Q: Consider the reaction. 2 Fe,0, – 4Fe + 30, Ali = +824.2 kJ The decomposition of 53.0 g of Fe,0;…

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Q: When a 2.00 g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of…

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Q: When a 8.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

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Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 238. kJ during a…

A: The objective of the question is to calculate the change in energy of the gas mixture during the…

Q: How many kilojoules of heat will be released when exactly 1 mole of molybdenum, Mo, is burned to…

A: We have to determine the amount of heat that will be released when exactly 1 mole of molybdenum, Mo,…

Q: c) In an experiment, 15.3g of sodium nitrate were dissolved in water in a calorimeter and the…

A: The reaction taking place in calorimeter is endothermic in nature because heat needed to carried out…

Q: Consider the equilibrium reaction of CO (g) with H2 (g) to form CH3OH (g). For this reaction, ΔH <…

A: The reaction of CO with H2 forms methanol CH3OH. Write the complete reaction. COg+2H2g→CH3OHg

Q: 3. A student added calcium to water and measured the increase in temperature to determine AH for the…

A: "Since you have posted a multiple sub-part question, we will solve the first 3 sub-parts for you.…

Q: 25.0 mL of 1.00 M HCl at 24.3°C react with 25.0 mL 1.00 M NAOH in a styrofoam calorimeter whose…

A: Using the energy conservation , in calorimeter  heat given in the reaction of neutralisation =heat…

Q: A 50.0-g sample of a copper-zinc alloy is heated to 100.0oC. The hot metal is quickly added to 100.0…

A: Specific heat capacity is the amount of heat in Joules is required by the substance to raise its…

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 158. kJ during a…

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Q: Determine the enthalpy (in kJ/mol) for the reaction 3 SiCl₄ (s) + 4 Fe (s) → 4 FeCl₃ (s) + 3 Si (s)…

A: To solve this we have to do some  mathematical operations with the given  two equations to get the…

Q: A chemist measures the enthalpy change AH during the following reaction: 2 Al(OH);(s)→Al,03(s) + 3…

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Q: Calculate Δ­H for the reaction  NO(g) + O(g) → NO2(g) given the following information: NO(g) +…

A: Introduction The value of heat of reaction can be calculated by the application of Hess's Law.

Q: A certain two-stepP process involves transfer of heat and work between the system and the…

A: From first law of thermodynamics, we have : ∆E = q + w  where ,∆E = change in internal energy.   If…

Q: When 18.5 g of HgO(s) is decomposed to form Hg(l) and O2(g), 7.75 kJ of heat is absorbed at…

A: From standard sources, we get:- Molar mass of HgO = 216.59 g/mol Amount of HgO consumed = 18.5g

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 323. kJ during a…

A: The enthalpy change of the given reaction is = -323. kJ The work done by the gas mixture is =-162.…

Q: You place 32.3 ml of 0.134 M Ba(OH), in a coffee-cup calorimeter at 25.00°C and add 60.6 ml of 0.433…

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