What is the value for the standard enthalpy of formation for Ag(s) that would be used in the equation above?

Q: Calculate the kinetic energy in joules of an automobile weighing 4175 lb and traveling at 45 mph. (1…

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Q: The heat given off by an acid solution as it is neutralized by a base solution could be measured by…

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Q: Some commercial drain cleaners contain two components; sodium hydroxide and aluminum powder. When…

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Q: The reaction of hydrochloric acid and sodium hydroxide is a very rapid and exothermic reaction. The…

A: Given:Molarity of HCl (MHCl) = 1.125 M.Volume of HCl (VHCl) = 50.0 mL= 0.05 L.Molarity of NaOH…

Q: what quantity of coal must be burned to supply 3.18*10^6 KJ, assuming that the only combustion…

A: Given: The heat released = 3.18 × 106 kJ Standard data:  The heat of combustion of solid carbon =…

Q: ne enthalpy change

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Q: In a constant-pressure calorimeter, 60.0 mL of 0.320 M Ba(OH), was added to 60.0 mL of 0.640 M HCI.…

A: In the given reaction both reactants are present in equal moles. Calculate the moles of water,

Q: When 1.3 g of KClO3 was added to 151.1 g of water in a calorimeter, the temperature dropped by 0.588…

A: Given, Mass of KClO3= 1.3g Mass of water= 151.1g Temperature dropped(dT)=0.588°C  The heat capacity…

Q: 10.5 g of solid ammonium nitrate are dissolved into a 100.0 g sample of water. The standard enthalpy…

A: Ammonium nitrate is a solid salt it can dissolve in the water .then it can ionise as ions  and AC as…

Q: 1.The combustion of methane gas, the principal constituent of natural gas, is represented by the…

A: Recall the given reaction CH4g + 2 O2g → CO2g + 2 H2Ol     ,  ∆H°=-890.3 kJ We have to find the mass…

Q: Write a balanced chemical equation for the standard formation reaction of liquid ethanol (C,H,OH).

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Q: Using the Table of Thermodynamic Values, determine the change in enthalpy

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Q: D. Calculate the standard enthalpy of combustion for the following reaction: Balance the equation…

A: Since, The standard enthalpy of the formation is defined as change of enthalpy of 1 mol of the…

Q: The enthalpy change for the reaction of hydrogen gas with fluorine gas to produce hydrogen fluoride…

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Q: Thermite reaction can be used to produce molten iron for welding railway tracks together. Fe2O3(s)…

A: the solution is as follows:

Q: Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) → 2 MCI, (aq) +…

A: In-order to find the enthalpy change of the desired reaction, the given reactions has to be written.

Q: The average mass of an oxygen atom is 5.3*10^ -26 kg . Calculate the kinetic energy of a mole of…

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Q: Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the…

A: The equation we have here is as follows. 2NaOHaq+2Als+6H2Ol→2NaAlOH4aq+3H2g From this equation it is…

Q: Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HCI(aq) 2 MCI, (aq) + 3…

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Q: A student decides to find the molar enthalpy for the reaction between phosphoric acid and calcium…

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Q: Calculate the standard enthalpy change (in kJ) for the following reaction NO₂(g) +H₂(g) NO(g) +…

A: Enthalpy change for the reaction= Sum of enthalpies of formation of products - sum of enthalpies of…

Q: When 13.99mL of HCl of unknown concentration (but less than that of the base) are reacted with…

A: Given : Concentration of NaOH = 3.172 M Volume of NaOH solution = 15.00 mL = 0.0150 L…

Q: Calculate the standard enthalpy change for the reaction 2Al(s) + Fe2O3(s) → 2Fe(s) + Al2O3(s)…

A: The question is based on the concept of Hess's law.     It states that the net enthalpy change…

Q: in the reaction, C(s)+O2(g)>CO2(g), how many moles of carbon would need to be burned in order to…

A: Given reaction is: C(s) + O2 (g) → CO2 (g)  +  Q The heat required to be produced, ∆H =500 kJ This…

Q: A reaction between Mg and aqueous hydrochloric acid was performed to determine the heat of the…

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Q: 3. The heat of the solution of a solid sample was determined using a coffee cup calorimeter that…

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Q: The aluminum cup inside your calorimeter weighs 41.55 g. You add 59.21 g of 1.0 M acetic acid…

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Q: In a constant-pressure calorimeter, 70.0 mL of 0.340 M Ba(OH), was added to 70.0 mL of 0.680 M HCI.…

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Q: Consider the following reaction. (a) Is the reaction exothermic or endothermic? exothermic…

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Q: The standard state of carbon is graphite. ΔH°f,diamond is +1.896 kJ/mol. Diamonds are normally…

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Q: The standard enthalpy of formation (AH) is the enthalpy change that occurs when exactly 1 mol of a…

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Q: The reaction between HCI and NaOH is represented below. When equal volumes of 1.00 M NaOH and 1.00 M…

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Q: Consider these reactions, where M represents a generic metal. 1. 2 M(s) + 6 HC1(aq) → 2 MCl,(aq) + 3…

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Q: The heat of solution of a solid sample was determined using a coffee cup calorimeter that contains…

A: Given the volume of water = 250 mL  density of water = 1.00 g/mL => mass of water inside the…

Q: 500.0 mL of 0.100 mol·L HCl(aq) was added to a high quality insulated calorimeter containing 500.0…

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Q: If 2.36 g of calcium dichloride dissolves in 84.00 g of water in a kalorimeter at a constant…

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Q: Your lab partner accidentally mixed some sodium chloride with your sample of Epsom salts (M9SO,…

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Q: The neutralization reaction of HClO4 (strong acid) with NaOH is given below. HClO4 (aq)  + NaOH…

A: The volume and molarity of HClO4 and NaOH is 128.1 mL and 0.649 M. The initial and final temperature…

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.