Water is added to a flask containing solid NH₄Cl. As the salt dissolves, the solution becomes colder.(a) Is the dissolving of NH₄Cl exothermic or endothermic?(b) Is the magnitude of ΔH(lattice) of NH₄Cl larger or smaller than the combined ΔH(hydr) of the ions? Explain.(c) Given the answer to (a), why does NH₄Cl dissolve in water?

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

A:

Q: 3.2 The standard Gibbs energy of formation of H20 at 25.0 °C, 4G, is -228.57 kJ.mot', for a standard…

A:

Q: In a constant‑pressure calorimeter, 60.0 mL60.0 mL of 0.300 M Ba(OH)20.300 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: The molar enthalpy of solid sodium hydroxide with a solution of hydrochloric acid. NaOH(s) + HCI(aq)…

A:

Q: Adding 1.56 g of K2SO4 to 6.00 mL of water at 16.2ºC causes the temperature of the solution to drop…

A: Given : Mass of K2SO4 added = 1.56 g Volume of water = 6.00 mL Drop in the temperature of initial…

Q: 9.06 g of M9SO, is placed into 100.0 mL of water. The water's temperature increases by 6.70°C.…

A: First, notice that the temperature of the water increased, meaning this is an EXOTHERMIC reaction.…

Q: At 18°C the heat of solution of anhydrous CuSO4 in a large volume of water is -15,800 cal/mole,…

A: At 18 °C the heat of solution of anhydrous CuSO4 is -15,800 cal/mole while that of CuSO4 . 5 H2Ois…

Q: For the reaction 4HCl(g) + O₂ (g) → 2H₂O(g) + 2Cl₂ (g) AH° -114.4 kJ and AS° = -128.9 J/K The…

A:

Q: Consider the oxidation of a generic metal M into a metal oxide as shown in the reaction. 2M(s) +20,…

A:

Q: Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 23.4 g…

A:

Q: A student dissolved 5.0g of KCl(s) in 100.g of distilled water at 20.00°C. The temperature of the…

A: In Given case, intially temperature was more and when the dissolution is complete, temperature goes…

Q: When a 5.00 g5.00 g sample of KClKCl is dissolved in water in a calorimeter that has a total heat…

A: Given : Mass of KCl dissolved = 5.00 g Total heat capacity of calorimeter = 4.12 KJ/K And the change…

Q: is true of false? (a) The second law of thermodynamics says that entropy is conserved. (b) If the…

A: a) According to second law of thermodynamics, entropy of univese is always increasing.  So, it is…

Q: When 8.6 grams of a certain compound is dissolved in 78 grams of water in a calorimeter, the…

A:

Q: 2. A mixture consists of nitrogen (28 g/mol) and oxygen (32 g/mol). Decreasing the Gibbs free energy…

A:

Q: 7:12 Question 15 of 50 Submit For the decomposition of mercury(II) oxide, HgO, to mercury and…

A:

Q: Frequently, when salts dissolve in water, the solution becomes warm. Such a process is exothermic.…

A: Endothermic process: It is the process in which the system absorbs heat from the surrounding and as…

Q: For the reaction given in Part A, how much heat is absorbed when 2.70 mol of AA reacts? (the image…

A:

Q: A student determines the value of the equilibrium constant to be 1.5297 x 107 for the following…

A: We know there is relation between ∆G (gibbs free energy ) and the Keq . ∆G = - RT ln (Keq) By using…

Q: When a 2.00 g2.00 g sample of RbBrRbBr is dissolved in water in a calorimeter that has a total heat…

A: Given, Mass of sample RbBr = 2.00gram Total heat capacity = 0.779 KJ-1K-1 Temperature is decreased…

Q: A tablespoon (about 15.0 mL) of sodium chloride, a common table salt, is dissolved in water. What is…

A: Given :- Volume = 15ml density of NaCl = 2.16 g/cm3 Delta H = 3.87 KJ/mol

Q: 9.91 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70 °C.…

A: Please find your solution below : Enthalpy of dissolution is defined as the change in enthalpy…

Q: H3C. (k) Og Zn/CH,COOH H3C heat 1R

A: The given reaction is the example of Diels alder reaction. In the second step ozonolysis of alkene…

Q: 7) ) Use the following data to calculate the enthalpy of solution of lithium chloride. chloride =…

A: Hf for solid lithium chloride is given by the process  Li+(g) + Cl-(g) →LiCl (s) The overall process…

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: Calculate the standard Gibbs free energy in kJ mol–1.

A: Recall the given half cell reaction,                          Au3+  +  3 e-  →  Au…

Q: Carbon monoxide and nitrogen monoxide gases combine to form carbon dioxide and nitrogen gases…

A:

Q: Addition of Barium nitrate water solution to weak solution of Potassium phosphate leads to…

A:

Q: dissolving 1.5 g of a solute into 100 mL of water caused the temperature of the solution to increase…

A: Information about the question

Q: Enter your answer in the provided box.   Kf for the complex ion Ag(NH3)2+ is 1.5 × 107 at 25 ° C.…

A: Calculation of standard free energy change using formation constant value :

Q: Given the reactions, X(s) + O₂(g) → XO(s) XCO,(s) — XO(s) + CO,(g) X(s) + }O,(g) + CO, (g) — XCO,(s)…

A:

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: « 0 because the motion of the H,O molecules increases as it transitions from solid to liquid. At a…

A: ∆G                              ∆H                           ∆S…

Q: When solutions containing silver ions and chloride ions aremixed, silver chloride…

A:

Q: Which Keq corresponds to a negative value of ΔGo, Keq = 1000 or Keq = .001?

A:

Q: 11. What is the ΔHº-value for the dissolution of NaOH (s) to yield 1.00... m NaOH (aq), given:…

A: Given data   Na (s) + 12 O2 (g) + 12 H2 (g) → NaOH (s)                ΔHfº = -425.9 kJ/mole   Na (s)…

Q: The enthalpy of neutralization of a newly discovered compound, J(OH)3, was determined using a…

A: We have to predict the  A. Heat capacity for calorimeter  B. Balanced equation for second given…

Q: When 25.0 mL of 0.25 mol/L LIOH and 25.0 mL of 0.25 mol/L HCI are mixed together, the temperature…

A: Given: Volume of LiOH = 25 mL Molarity of LiOH = 0.25 mol/L Temperature = 15.8oC Heat capacity of…

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: For a particular salt, the solution (dissolving) process is endothermic. As the temperature at which…

A: For an endothermic process, increasing temperature increases the reaction rate. Since the…

Q: In the laboratory a general chemistry student finds that when 0.73 g of KOH(s) are dissolved in…

A: The given mass of KOH = 0.73 g The given mass of water = 100.40g Total mass of the solution (m) =…

Q: Calculate the ΔH for the reaction. Show the complete and step by step solution. NO(g) + O(g) -> NO2…

A:

Q: 6.41 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70°C.…

A:

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

A:

Q: The salt barium bromide is soluble in water. When 9.82 g BaBr2 is dissolved in 115.00 g water, the…

A: Given, The amount of water = 115.00 g Temperature (T1) = 250C Temperature (T2) = 26.680C. ∆t =…

Q: When 2.00 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 11.00oC was…

A: Given, mass of sodium hydroxide = 2.00g.            Mass of solution = 150.00g.            ∆T =…

Q: Calculate the ΔMG when mixing 2 mols H2 at 25ºC and 4 mols N2 at 25 ºC , being both of them at the…

A: For an ideal gas mixture,ΔMG = -T ΔMSwhere ΔMS = -nR (x1 lnx1 + x2 lnx2)  x1 and x2 are mole…

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.