13.4 g of NH4Cl is dissolved in 150 mLof water in a coffee-cup calorimeter, and the temperature of the solution decreases from 24.80°C to 18.95°C. (a) Calculate the enthalpy change for the dissolution of this sample of NH4Cl in J. (b) What would be the enthalpy change for dissolving one mole of NH4Cl in kJ/mol? Note that the specific heat capacity of water is 4.186J/g·K and its density is 1.00 g/mL. Remember that the heat gained by the water is heat that is lost by the system.

Q: 0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's…

A: given data is moles of the sample is 0.700 moles  volume is 150.0ml solution temperature is…

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 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: When 20.0 mL of 0.200 M A9NO3 and 30.0 mL of 0.100 M NaCl, both at 24.72°C, are mixed in a…

A:

Q: Calculate ΔH(f) for liquid water, knowing that ΔH (f) of H2O (g) is -242 kJ:  H2O(l) -> H2O(g) ΔH…

A:

Q: Calculate (in kJ/mol) the standard Gibbs free energy change (AGºrxn) for the oxidation of sulfur…

A: The given reaction is  2SO2(g) + O2(g) → 2SO3(g)  ∆Hrxn = -198.4 kJ = 198400 J  ∆Srxn = -187.9 J/K…

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: 1.28 g of LiCl(s) is dissolved in 25.0 mL of water that is initially 22.0°C.  b)   Using the…

A:

Q: What is the standard enthalpy change for the reaction? 2NH3(g) ----* NzH4(1) + Hz(g) (A) -935…

A: What is the standard enthalpy change for the reaction?

Q: Determine the standard enthalpy of formation ∆f Hº (in kJ/mol) for HI (g) given that the enthalpy of…

A: Since the enthalpy of reaction can be calculated as  ΔH reaction = sum of (enthalpy of formation of…

Q: ΔH for the dissolving process KOH (s) → KOH (aq) is -57.6 kJ/mol KOH.  In an insulated calorimeter,…

A: In calorie meter we can calculate the hate of the reaction .

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: 0.700 moles of an unknown solid is placed into water to make 150.0 mL of solution. The solution's…

A: When solid is placed in solution, temperature of solution decreased, that means solid absorbed heat…

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: When 4.75 g of sodium hydroxide (NaOH) was dissolved in 50.00 g of water a value of 11.00oC was…

A: Given information,Mass of sodium hydroxide is 4.75 g, mass of water is 50.00 g and the temperature…

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: In the following experiment, a coffee-cup calorimeter containing 100.0 mL of H2O is used. The…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: The standard heat of formation for Ag2CrO4(s) is -712 kJ/mol at 298 K. Write the formation equation…

A: The equation for the heat of formation reaction can be written as, 2Ag++CrO4-2→ Ag2CrO4 ∆H=-712…

Q: 13.4gof NH4Clis dissolved in 150mLof water in a coffee-cup calorimeter, and the temperature of the…

A: moles of NH4Cl = mass / molar mass of NH4Cl                           = 13.4 g / 53.5 g/mol…

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 50.00 mL of aqueous HCI was mixed with 50.00 mL of NaOH (in large excess), the temperature of…

A: Given : Volume of HCl solution added = 50.0 mL Volume of NaOH solution added = 50.0 mL Initial…

Q: A student dissolves 10.2 g of sodium hydroxide (NaOH) in 200. g of water in a well-insulated open…

A: According to the law of calorimetry heat absorbed by a system is given by the following expression…

Q: ne salt potassium perchlorate is soluble in water. When 2.32 g KCIO, is dissolved in 104.00 g water,…

A:

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

A:

Q: art 1: Write the chemical equation obtained when reactions X and Y are added together to produce the…

A: Given : We have to calculate the delta H for the complete reaction.

Q: umts OI KJ/IIOI. Consider the dissolution of CaCl2: CaCl,(s) → Ca²*(aq) + 2CI¯(aq) AH = -81,5 kJ An…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: A 1.69 g of NaCl are added to 111 g of water in a constant pressure calorimeter, the temperature of…

A:

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) +…

A: This problem can be solved using Hesse's law of constant heat summation.

Q: 0.81 g sample of KCl is added to 37.9 g H2O and stirred until KCl completely dissolves in a…

A: When KCl is mixed with water as we see temperature of the system decreases . Heat of solution is…

Q: Q8. 0.81 g sample of KCl is added to 37.9 g H;O and stirred until KCl completely dissolves in a…

A: Given data -                 mass of KCl = 0.81 g            mass of water = 37.9  g      initial…

Q: When 2.25 g of sodium hydroxide (NaOH) was dissolved in 100.00 g of water a value of 10.00oC was…

A: The heat of the solution produced when 2.25 g of sodium hydroxide is dissolved in 100 g of water, is…

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: When 3.00 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 11.00oC was…

A: The heat of the solution produced when 3.0 g of sodium hydroxide is dissolved in 100 g of water, is…

Q: The standard heat of formation for Ag2CrO4(s) is -712 kJ/mol at 298 K. Write the formation equation…

A: Given, standard heat of formation for Ag2CrO4(s) is -712 kJ/mol. The term "standard heat of…

Q: When 1.96 g of NaCl are added to 111 g of water in a constant pressure calorimeter , the temp of…

A:

Q: 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The…

A: Given: Moles of unknown solid = 3.15 mol Volume of solution = 150.0 mL Temperature rises by 19.41 °C…

Q: 3.15 mol of an unknown solid is placed into enough water to make 150.0 mL of solution. The…

A:

Q: The salt ammonium bromide is soluble in water. When 6.41 g NH,Br is dissolved in 110.00 g water, the…

A: INTRODUCTION: Solute dissolves when the heat is released ,thus the temperature of the solution…

Q: Given the standard enthalpy changes for the following two reactions: (1) 2Pb(s) +…

A:

Q: When 3.25 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 10.00oC was…

A: The specific heat capacity of a substance is the amount of heat which is required to raise the…

Q: 50.0 mL of 2.03 M NaOH(aq) is mixed with 50.0 mL of 2.20 M HCl in a Styrofoam calorimeter.…

A:

Q: 10.71 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70°C.…

A: density is defined as the mass of an object upon the volume of spaced occupied density d = mass of…

Q: 6. 100.0 mL of 1.00 M of HCl and 100.0 mL of 2.00 M of Ca(OH)2 are mixed at 298K. During the…

A: The objective of the question is to calculate the heat of neutralization.