How much heat is liberated at constant pressure if 0.833 g of calcium carbonate reacts with 59.7 mL of 0.251 M hydrochloric acid? CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g); ΔH° = –15.2 kJ a. 0.113 kJ b. 0.24 kJ c. 12.6 kJ d. 0.126 kJ e. 3.81 kJ

Q: When a 8.00 g sample of KCI is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given : Mass of KCl dissolved = 8 g Total heat capacity of calorimeter = 6.15 KJ/K And change in…

Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

A: Given, Step 1: CaC2(s)+2H2O(g)→C2H2(g)+Ca(OH)2(s)       ∆H=-414 kJ   Step 2:…

Q: Consider the following chemical reactions and their standard reaction enthalpies (ΔH) at 298 K. NH…

A: This problem is based on Hess's  law of thermodynamics   The Hess law states that the change of…

Q: When a 7.00 g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: When a 4.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity…

A:

Q: The standard enthalpy change for the following reaction is 35.6 kJ at 298 K. L(s) + Cl2(g) – 2…

A:

Q: The standard enthalpy change for the following reaction is 270 kJ at 298 K. 2 HNO3(g) N2(g) + H2(g)…

A: Heat of formation of HNO3 = -135KJ/mol

Q: Use the standard reaction enthalpies given below to determine ΔH°rxnfor the following reaction:…

A:

Q: When a 4.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of…

A: Heat of solution is the heat absorbed or given out when the salt is dissolved.

Q: When a 7.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: The standard enthalpy change for the following reaction is 401 kJ at 298 K. 2 CH3OH(g)2…

A: • Given,         2 CH3OH(g) → 2C(s,graphile) +4H2(g)+O2(g),                              ∆H°=401 KJ…

Q: When a 4.00 g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of…

A: Given,4.00 g sample of KBrTotal heat capacity of 3.04 kJ K-1.The temperature decreased by 0.220…

Q: The ΔrH for the oxidation of solid sulfur to SO3 is -396  kJmol−1 and for the oxidation of SO2 to…

A: To solve this problem we will use the given enthalpy of formation to calculate the enthalpy of…

Q: The standard enthalpy of reaction, AH' pxn, for the reaction, CaO(s) + SO3(3) – CaSO4(s) is -401.5…

A:

Q: Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 34.4 g…

A: Given that: Mass of KNO3 = 34.4 g, mass of water = 217 g, initial temperature of water, Ti = 23.00⁰C…

Q: when a 6.00 g sample of KBr is dissolved in water in calorimeter that has a total heat capacity of…

A: The heat of the reaction when 6 g of KBr is dissolved can be calculated as,

Q: A calorimeter contains 20.0 mL of water at 14.5 ∘C . When 1.20 g of X (a substance with a molar mass…

A: From the given information, we can calculate the mass of water (solvent) and the mass of the…

Q: The heat of neutralization of aqueous hydrochloric acid by sodium hydroxide is −55.84 kJ/mol H2O…

A:

Q: What quantity of heat (in kJ) will be released if 0.1739 mol of NH3 are mixed with 0.200 mol of O₂…

A:

Q: The

A: We will calculate ∆H

Q: Calculate Q(kJ )for the conversion of 2.390 g of solid aluminum oxide into aluminum and oxygen?

A: Given enthalpy change (∆H) is defined for 2 mole of AL2O3 because generally enthalpy change is…

Q: When a 6.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity…

A: We have to calculate the molar heat of solution.

Q: When 0.560 g of Na(s) reacts with excess F2(g) to form NaF(s), 13.8 kJ of heat is evolved at…

A: The solution of above question is-

Q: When 5.03 of solid potassium hydroxide are dissolved in 100.0 mL of distilled water in a coffee-cup…

A:

Q: During an experiment, a student adds 1.23 g Ca0 to 200.0 mL of 0.500 M HCI. The student observes a…

A: Generally the heat released in the reaction is absorbed by the solution and raises the temperature…

Q: When a 2.00 g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: Using the provided table, determine the enthalpy for the reaction 2 K(s) + 2 H₂O(l) → 2 KOH (aq) +…

A: The change in enthalpy of a reaction is calculated as follows,                            ∆H =…

Q: The standard enthalpy change for the following reaction is 925 kJ at 298 K. Mg(OH)2(s) → Mg(s) +…

A: We know that Enthalpy is a state function one that depends on only the Initial state of the system…

Q: The standard enthalpy change for the following reaction is -467 kJ at 298 K. Na(s) + 1/2 N2(g) + 3/2…

A:

Q: Calculate ∆o for [Co(H2O)6]2+ in units of kJ.

A: In order to solve this question, we must know the crystal field splitting theory and the number of…

Q: In a coffee-cup calorimeter, 1.59 g NH4NO3 is mixed with 74.3 g water at an initial temperature of…

A: Enthalpy change of dissolution is calculated as : ∆H = - q / n  where , n = moles  q = heat of…

Q: The standard enthalpy change for the following reaction is 657 kJ at 298 K. SiCl4(g) →→→ Si(s) + 2…

A: Given -> SiCl4(g) ------> Si(s) + 2Cl2(g).       ∆H°= 657 KJ  T = 298 K

Q: What mass of carbon monoxide must be burned to produce 175 kJ of heat under standard state…

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Q: When 4 grams of a certain compound is dissolved in 61 grams of water in a calorimeter, the…

A:

Q: When 18.5 g of HgO(s) is decomposed to form Hg(l) and O2(g), 7.75 kJ of heat is absorbed at…

A: From standard sources, we get:- Molar mass of HgO = 216.59 g/mol Amount of HgO consumed = 18.5g

Q: The standard enthalpy of reaction, AH rxn: for the reaction, CaO(s) + SO3(g) –→ CaSO4(s) is -401.5…

A: Ans.           ∆H°=Erxn°+∆nRT    or     Erxn° = ∆H°-∆nRT…

Q: The standard enthalpy change for the following reaction is -92.2 kJ at 298 K. N2(g) + 3 H2(g)→2…

A: standard enthalpy change for the reaction is given as, ΔHrxn = -92.2 KJ  Since the enthalpy change…

Q: Dimethyl ether, a useful organic solvent, is prepared in two steps. In the first step, carbon…

A: When two reactions are added to get a third reaction then the enthalpy of the third reaction is the…

Q: Consider the following chemical reactions and their standard reaction enthalpies (ΔH) at 298 K. NH +…

A: The reactions given are, 1) NH3 (g) + HCl (g) → NH4Cl (s)                                   ΔH1 =…

Q: How much heat is released at constant pressure if 12.3 mL of 0.161 M silver nitrate is mixed with…

A: Given,  AgNO3(aq) + KCl(aq)  ➝ AgCl(s) + KNO3(aq) ∆H° = -65.5 kJ Here (-) sign indicate the release…

Q: When 50 mL of 0.400 M aqueous hydrochloric acid (HCI; Molar mass: 36.5 g/mol) is mixed with 50 mL of…

A:

Q: The standard enthalpy change for the following reaction is -641 kJ at 298 K. Mg(s) + Cl2(g)…

A: From given data we need to calculate the enthalpy change for reverse of the given reaction. As the…

Q: The standard enthalpy change for the following reaction is -467 kJ at 298 K. Na(s) + 1/2 N2(g) + 3/2…

A: Given,

Q: The standard enthalpy change for the following reaction is -135 kJ at 298 K. 1/2 N2(g) + 1/2 H2(g)…

A: Basic Rule If any number is multiplied in the reaction Then that number is also multiplied in the…

Q: In an experiment to measure the heat released by the combustion of a sample of fuel, the compound…

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Q: Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 48.7 g…

A:

Q: Using the provided table, determine the enthalpy for the reaction 2 K(s) + 2 H,O(1) → 2 KOH (aq)…

A: The chemical reaction is:2 K (s)+ 2H2O (l) → 2KOH (aq)+H2 (g)         ∆HrGiven: ∆Hf° {K (s)} = 0∆Hf°…

Q: When a 3.00 g sample of KCN is dissolved in water in a calorimeter that has a total heat capacity of…

A:

Q: When 0.0300L of 0.500 M KOH is mixed with 0.0500 L of 0.300 M HNO3 in a coffee-cup calorimeter, the…

A: Given: Initial temperature of mixture= 18.89∘CFinal  temperature of mixture= 20.20∘CHeat capacity of…

Q: The standard enthalpy change for the following reaction is 1.11×103 kJ at 298 K. 2 BaO(s)2 Ba(s) +…

A: