When a 6.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 3.58 kJ.K-¹, the temperature decreases by 0.280 K. Calculate the molar heat of solution of KBr. AH soln = kJ/mol

Q: Use the given information to determine the enthalpy of the reaction 2 M(s) + 3 Cl,(g) – 2 MCI, (s)

A: Step : 1             Find the enthalpy of the reaction.

Q: Sodium chloride is added in cooking to enhance the flavor of food.  When 10.0 g of NaCl is…

A: Given that 669 J of heat is absorbed. q = +669 JAs heat is absorbed in the reaction from water in…

Q: In a constant-pressure calorimeter, 60.0 mL of 0.310 M Ba(OH), was added to 60.0 mL of 0.620 M HCI.…

A:

Q: How much heat will be released (AH) if 0.4501 mol of NH3 are mixed with 0.20 mol of O2 in the…

A:

Q: A student mixes 67.0 mL of a 2.01 M sodium hydroxide solution with  23.2 mL of 6.45 M hydrochloric…

A: GivenVolume of NaOH solution = 67.0 mL = 0.067 LMolarity of NaOH solution = 2.01 MMoles of NaOH…

Q: Mass of water 5.678 g Ti 2.33 Tf -21.33 a. calculate the heat lost when the mass of water (g)…

A: This problem is based on phase tranfer of matter . Here water transform from water to ice from…

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

A:

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: Specific heat: It is defined as the amount of heat required to raise the temperature of the…

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: A student is determining the enthalpy of solution for ammonium nitrate by adding ammonium nitrate to…

A: The question is based on the concept of chemical thermodynamics. we need to predict the effect on…

Q: Consider these reactions, where M represents a generic metal. 2 M(s) + 6 HCl(aq) – 2 MC, (aq) + 3 Н,…

A: The reactions given are,

Q: 8. The reaction below was carried out in a calorimeter initially at 22.0 °C. After 0.0180 g of iron…

A:

Q: To determine the specific heat of a newly created, highly conducting material, a 704.8 mg sample of…

A: Mass of sample = 704.8 mg  Heat supply = 35.548  J  Initial temperature = 297.05 k  Final…

Q: 7. When 0.63 g of solid LiCI (AHsoln = – 37.1 kJ/mol) dissolves in 5 L of water, how much heat is…

A: Answer :-  Heat released (q) when 0.63 g LiCl dissolved in 5 L water = -552.8 (J) = -0.5528 (kJ)…

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: Given, Mass of unknown sample ,ms=4.81 g  mass of water, mw= 150 g initial temperature Ti=23.72°C…

Q: 1. In an experiment to determine the Specific Heat of Nickel, a 66.0 g sample of Nickel metal is…

A: Answer :-  The specific heat of Nickel determined by the experiment = 0.544 J/g.°C…

Q: In a calorimetric analysis, 2.42 g of potassium chloride is weighed. The heat of solution of this…

A:

Q: A metal object with mass of 24.9 g is heated to 97.0 ∘C and then transferred to an insulated…

A: Heat = mass of substance X specific heat X temperature change

Q: Al2O3(s) + heat → 2Al(s) + ½ O2(g) This reaction is    (endothermic / exothermic ).

A: An EXOTHERMIC thermochemical reaction equation is written as  Reactants ------> products + Heat…

Q: A 5.29 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Given information: Mass of unknown sample = 5.29 g Mass of water = 150.00 g Heat gained by solution…

Q: A 6.55 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

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Q: An ideal gas in a cylinder fitted with a piston expands at constant temperature from a pressure of 5…

A:

Q: A 6.55 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: The total mass of a solution is the summation of the mass of solute and the mass of solvent. The…

Q: 6. A student is determining the enthalpy of solution for ammonium nitrate by adding ammonium nitrate…

A: The question is based on the concept of chemical thermodynamics. we need to predict the effect on…

Q: Commercial cold packs consist of solid ammonium nitrate and water. NH4NO3 absorbs 25.69 kJ of heat…

A: Given that: Mass of ammonium nitrate = 3.40 gMass of water = 100 gInitial temperature of solution =…

Q: A student mixes 67.0 mL of a 2.01 M sodium hydroxide solution with 22.4 mL of 6.45 M hydrochloric g…

A:

Q: 4. The specific heat of water is quite high at 4.184 J/gC. Explain how life on this planet would be…

A: The amount of heat required to increase the temperature of the 1 g of the substance by 1 degree is…

Q: The reaction between sodium metal and chlorine gas produces 822 kJ of heat energy for every chlorine…

A:

Q: f the heat of precipitation of barium sulfate is -1473.2 kJ/mol, what is the heat of solution…

A: A chemical equation can be added, subtracted, multiplied, or divided similar to an algebraic…

Q: When 5.325 g KCL dissolves in 100.0ml of water the temperature decreases from 24.1 c to 21.2 c.…

A: Given:Mass of KCl = 5.325 g.Volume of water =100.0 mLInitial temperature = 24 °CFinal temperature =…

Q: The enthalpy of solution (AH) of NaNO, is 20.4 kJ/mol. If 5.25 g NANO, is dissolved in enough water…

A:

Q: A 6.61g sample of an unknown salt (MM=116.82g//mol) is dissolved in 150.00g water in a coffee cup…

A: GivenMass of unknown salt = 6.61 gMolar mass = 116.82 g/mol

Q: In a coffee cup calorimeter, 50.0 mL of 1.00 M NaOH and 50.00 mL of 1.00 M HCl are mixed. Both…

A: The given informations are recorded as shown below,

Q: A 6.61g sample of an unknown salt (MM=116.82g//mol) is dissolved in 150.00g water in a coffee cup…

A: Answer:Calorimetry is the easiest way to calculate the amount of heat transferred to a substance or…

Q: A 5.71 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A:

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

A:

Q: A 5.71 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Mass of unknown salt dissolved in 150.00 g of water = 5.71 g Molar mass of the salt  = 116.82 g/mol…

Q: The temperature of the solution increases from 21.3 °C to 38.2 °C. 0.468 g Mg reacting0.0193 mol Mg…

A: The objective of the question is to calculate the quantity of heat released in a chemical reaction.…

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.