When 49.38 g of potassium fluoride (Mw=58.097 gmol-1) was dissolved in 1.00 dm3 of water at a temperature of 25 °C, the temperature of the solution increased by 3.61 degrees. Calculate the heat transferred between the system and the environment and the molar enthalpy of dissolution of the compound ΔsHm. Assume that the density and specific heat capacity of the solution are the same as water: C=4.18 J°C^-1g^-1 and d=1.0 kgdm^-3

Q: you combine 50.0 mL H2O, 50.0 mL of 2.2 M HCl(aq), and 4.088 g NaOH(s) (molar mass of NaOH = 40.00…

A: Heat absorbed or released is given by equation q = m c ΔT where, q= heat energy m = mass =104.910 g…

Q: The reduction of iron(III) oxide (Fe2O3) to pure iron during the first step of steelmaking, 2…

A: ∆Gf of CO2 = -438 KJ/mol∆Gf of Fe2O3 = -839 KJ/mol We have to find maximum mass of pure iron that…

Q: Calculate the entropy of vaporization for 3 moles of water at 25 °C given that Cp, m (H2O(l)) =…

A:

Q: 50.0 g of NH4Cl(s) (53.49 g mol–1) is dissolved in 200.0 mL of H2O in a constant–pressure…

A: Given:…

Q: Calculate the standard entropy, ΔSrxn∘, of the reaction at 25.0 ∘C using the table of thermodynamic…

A:

Q: A closed, but not isolated system is in thermal contact with its surroundings. The system's volume…

A: The system and the surroundings are in thermal contact with each other, as per the given scenario.

Q: The salt calcium chloride is soluble in water. When 1.55 g CaCl₂ is dissolved in 116.00 g water, the…

A: Given,The amount of water = 116.00 gTemperature (T1) = 250CTemperature (T2) = 27.470C. = (27.47-…

Q: In a constant‑pressure calorimeter, 65.0 mL65.0 mL of 0.350 M Ba(OH)20.350 M Ba(OH)2 was added to…

A: A calorimeter is used to measure the heat of a reaction. There may have endothermis or exthormic…

Q: a constant‑pressure calorimeter, 70.0 mL70.0 mL of 0.300 M Ba(OH)20.300 M Ba(OH)2 was added to 70.0…

A:

Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…

A: Answer: ΔGrxn = -33.6 kJ/mol Yes

Q: Heat capacity data can be used to estimate the reaction enthalpy at one temperature from its value…

A: Given: T1 = 25oC = 25 + 273 = 298 K T2 = 100oC = 100 + 273 = 373 K The reaction is given as…

Q: In a constant‑pressure calorimeter, 50.0 mL50.0 mL of 0.940 M H2SO40.940 M H2SO4 was added to 50.0…

A: Given that: Volume of H2SO4 =50ml Molarity of H2SO4 =0.940M Volume of NaOH =50ml Molarity of NaOH…

Q: (a) The equilibrium constant of the isomerization of cis-2-butene to trans-2-butene is 2.07 at 127.0…

A: The change in Gibbs free energy gives the idea of whether the reaction is spontaneous or not or in…

Q: If the equilibrium constant of a reaction is Keq = 9.3 × 103 at 900 °C, what is the change in Gibbs…

A: Given,  Keq = 9.3 × 103 Temperature, T = 900 °C  R = 8.314 J K–1 mol–1 We have to calculate the…

Q: Calculate the change in internal energy (in kcal) for the reaction Cl₂(g) +7/₂O2(g) = Cl₂O(g) at 25…

A: Given -> Enthalpy for formation of Cl2O7 = 63.4 kcal T = 25°C

Q: 6A. State whether each of the following is true or false. Explain your reasoning in each case. (a) q…

A: (a) According to the first law of thermodynamics, the internal energy change of the system is given…

Q: For a chemical reaction the equilibrium constant was found to be K = 1.4 × 10–8 at T = 298.15 K, and…

A:

Q: The reduction of iron(III) oxide (Fe₂O3) to pure iron during the first step of steelmaking, 2…

A:

Q: Calculation of the entropy of mixing for each mixture: You measured the exact temperature at which…

A:

Q: For a certain chemical reaction, the equilibrium constant  K   =   ×1.410−6  at  10.0   °C .…

A: Given :-  equilibrium constant (K) = 1.4 × 10-6  temperature (T) = 10.0 °C  To be calculated :-…

Q: using a calibrated solution calorimeter measured a temperature decrease of 1.10 K when 1.00 g of…

A: Since, the temperature of the calorimeter is decreased, which indicates that heat is absorbed by the…

Q: In a constant‑pressure calorimeter, 50.0 mL50.0 mL of 0.300 M Ba(OH)20.300 M Ba(OH)2 was added to…

A: ΔH for this reaction (per mole H2O produced) = 57.0 kJ/mol

Q: In a constant‑pressure calorimeter, 55.0 mL55.0 mL of 0.300 M Ba(OH)20.300 M Ba(OH)2 was added to…

A: Given  molarity of Ba(OH)2 = 0.300 M Volume of Ba(OH)2 = 55.0 mL  molarity of HCl = 0.600 M  Volume…

Q: Calculate the enthalpy of solution for the dissolution of lithium iodide, LiI, molar mass = 133.85 g…

A:

Q: In a constant‑pressure calorimeter, 65.0 mL65.0 mL of 0.320 M Ba(OH)20.320 M Ba(OH)2 was added to…

A: The balanced reaction taking place can be written as, => 2 HCl (aq) + Ba(OH)2 (aq) --------->…

Q: chemist carefully measure the amount of heat needed to raise the temperature of a 0.60 kg sample of…

A: Specific heat capacity is calculated by using the formula: Cs = q/m∆T Cs = specific heat capacityq =…

Q: The equilibrium constant for the reaction N2(g) + 3 H2(g) ⇋ 2 NH3(g) is 2.13 × 106 at 288 K and 1.75…

A: The recation is,             N2(g) + 3 H2(g) ⇋ 2 NH3(g)  The given parametrs are, T1 = 288 K T2 =…

Q: . Calculate the change in the temperature of the solution.

A: The heat of dissolution is absorbed by solution to raise its temperature.   As the solution is…

Q: The reduction of iron(III) oxide (Fe,O,) to pure iron during the first step of steelmaking, 2 Fe₂O₂…

A:

Q: A student using a calibrated solution calorimeter measured a temperature decrease of 1.10 K when…

A: Given: Temperature of the solution with calorimeter decreased = 1.10 K Mass of KNO3 added = 1.00 g.…

Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…

A:

Q: ritical reaction in the production enosine triphosphate, ATP, to aden ATP(aq) + H,O(1) → ADPO which…

A: Reaction  ATP (aq) + H2O (l) →ADP (aq)+HPO42- (aq) G = ΔΔG0 + RT ln K       = ΔG0 + 2.303 RT log K…

Q: Calculate ΔStotal (for the system) when the state of 0.8 mol diatomic perfect gas molecules, for…

A: Given-> Cp,m = 7/2R T1= 25°C = 25 + 273 = 298 K T2= 135°C = 135 + 273 = 408 K P1= 1.50 atm P2=…

Q: In a constant‑pressure calorimeter, 65.0 mL65.0 mL of 0.350 M Ba(OH)20.350 M Ba(OH)2 was added to…

A: Step : 1           calculate the ΔH for the reaction.

Q: Calculate ΔS (for the system) when the state of 2.00 mol of gas molecules, for which Cp,m =  R, is…

A: We have given the  Calculate ΔS (for the system) when the state of 2.00 mol of gas molecules, for…

Q: In which of the following systems does the tendency to maximum entropy favour the products and the…

A:

Q: The Gibbs energy of transition from metallic white tin (a-Sn) to nonmetallic grey tin (ß-Sn) is…

A: The main aim of this question is to explain the reference state of tin at this temperature.

Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…

A: For a spontaneous chemical reaction, the change in Gibbs free energy is negative. Use the following…

Q: standard enthalpy

A:

Q: In a constant‑pressure calorimeter, 55.0 mL55.0 mL of 0.900 M H2SO40.900 M H2SO4 was added to 55.0…

A: given: total volume = 55 ml + 55 ml = 110 ml = 110 g mass of solution = 110 g specific heat C =…

Q: 4.38 g of a gas (28.1 g mol–1) was dissolved in liquid water in a calorimeter with a calorimeter…

A: The question is based on the concept of chemical thermodynamics. We have  to calculate enthalpy of…

Q: Calculate the change in internal energy (in kcal) for the reaction Cl2(g) + 7/2 O2(g) = Cl₂O7(g) at…

A: Given-> Cl2(g) + 7/2(O2) = Cl2O7(g)  T = 25°C  ∆H= 63.4 kcal/mole

Q: Hydrogen gas burns in an atmosphere of bromine gas to produce hydrogen bromide gas according to the…

A:

Q: In a constant‑pressure calorimeter, 65.0 mL65.0 mL of 0.330 M Ba(OH)20.330 M Ba(OH)2 was added to…

A: First determine the moles of HCl and Ba(OH)2. HCl moles =0.660M×65.0×10-3L=0.0429 molBa(OH)2 moles…

Q: How much energy (at constant temperature and pressure) must be supplied as heat to 10.0 g of…

A: The given data contains, mass of chlorine gas =10.0 g Enthalpy of ionization =+12575 kj/molElectron…

Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…

A:

Q: a) Describe in your own words the relationship between standard change in Gibbs free energy…

A: a) The relationship between the ΔG0 and equilibrium constant is given by  => RTln(Keq ) = -ΔG0…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.