Given the thermochemical equations X, + 3 Y, – 2XY, AH1 = -390 kJ X, + 2Z, → 2XZ, AH2 = -170 kJ 2Y, + Z, → 2Y,Z AH3 = -250 kJ Calculate the change in enthalpy for the reaction. 4XY, + 7Z, – 6 Y,Z + 4XZ, ΔΗΞ kJ

Given the thermochemical equations X, + 3 Y, – 2XY, AH1 = -390 kJ X, + 2Z, → 2XZ, AH2 = -170 kJ 2Y, + Z, → 2Y,Z AH3 = -250 kJ Calculate the change in enthalpy for the reaction. 4XY, + 7Z, – 6 Y,Z + 4XZ, ΔΗΞ kJ

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 99QRT

See similar textbooks

Related questions

Q: Given the thermochemical equations X₂ + 3 Y₂2 XY3 X₂ +2Z₂ → 2XZ₂ - AH₁ = -390 kJ AH₂ = -160 kJ 2 Y₂…

Q: Determine the change in enthalpy for the following reaction from the enthalpies of formation for the…

A: The enthalpy of Reaction is the difference between enthalpies of Reactants and Products. It is…

Q: Given the thermochemical equations X, + 3 Y, → 2 XY, AH1 = -390 kJ X, +2 Z, → 2 XZ, AH2 = -160 kJ…

A: In-order to find the enthalpy change of the desired reaction, the given reactions has to be written.

Q: Using the equations H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol C (s) + 2 F2 (g) → CF4 (g) AH° =…

A: To solve this problem we will use the given two thermochemical equations .

Q: their enthalpy changes, N2 (g) + O2 (g) --> 2 NO (g)…

Q: Using the equations H, (g) + F, (g) → 2 HF (g) AH° = -79.2 kJ/mol C (s) + 2 F, (g) → CF, (g) AH° =…

Q: Use standard enthalpies of formation to calculate AH°rxn for the following chemical reaction: 3NO2…

A: Given chemical equation : 3NO2(g) + H2O(l) -----> 2HNO3(aq) + NO(g) ΔHorxn can be calculated as :…

Q: Using the equations 2 H2 (g) + O2 (g) → 2 H¿0 (I) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH°…

A: If we multiply by any number or divide to the chemical reaction then ∆H will also multiply or divide…

Q: Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2 C3H18(1) +…

A: Given reaction is : 2C8H18 (l) + 25O2 (g) -------> 16CO2 (g) + 18H2O (l), ΔH0 = -11200 KJ…

Q: Given the thermochemical equations X, + 3 Y, → 2XY3 AH1 = -340 kJ X, + 2Z, 2 XZ2 AH2 = -170 kJ 2 Y,…

Q: Nitrogen and oxygen gas combine to form nitrogen dioxide according to the reaction N2(g) + 20s(g)…

Q: 1. Nitrogen and oxygen gas combine to form nitrogen oxide acc.to the ffg reaction: N +20 2(g) 2(g)…

A: According to Hess's law enthalpy of reaction remains the same whether the reaction takes place in…

Q: If 4.771 mol of a material produces 775.5 kJ of heat in a reaction, determine the molar enthalpy for…

A: Molar enthalpy for a reaction if it is an exothermic reaction is the heat produced per 1 mole of the…

Q: A scientist measures the standard enthalpy change for the following reaction to be -820.7 kJ…

Q: Use standard enthalpies of formation to determine ΔHºrxn (kJ) for : 2NO2(g) -> N2O4 (g)

A: The enthalpy of the reaction, ΔH is calculated as,

Q: CaO(s) reacts with water to form Ca(OH)2(aq). If 6.50 g CaO is combined with 99.70 g H2O in a coffee…

Q: Given the thermochemical equations X, +3 Y, → 2XY AH = -330 kJ X, +2Z, → 2XZ, AH = -120 kJ 2Y, +Z, →…

A: Given thermochemical reactions are : X2+3Y2→2XY3 ∆H1=-330 kJ…

Q: If 20.0 g of CH4 reacts with excess oxygen, what is the change in enthalpy for the reaction?…

A: The reaction considered is the combustion of methane and it is exothermic.

Q: Using the equations 2 H, (g) + O, (g)→ 2 H,O (1) AH° = -572 kJ/mol Ca (s) + ½ Ô, (g) → CaO (s) AH° =…

Q: ing the decay of organic matter, which contains sulfur. The gas burns in oxygen as follows: 2H,S(g)…

A: Hess's law states that the amount of heat evolved or absorbed in a process is independent of the…

Q: II. The standard enthalpy of formation of liquid ethanol C2H;OH», is -227.63 kJ/mol. Calculate the…

A: Given, ΔHfo C2H5OH(l) = -227.63 kJ/mol ΔHf0 CO2(g) = -393.5 kJ/mol ΔHf0 H2O(l) =…

Q: Si(s) + 2 F2(g) ΔH° = 1.61×103 kJ What is the standard enthalpy change for this reaction…

Q: I. Give the thermochemical data below, find the change in enthalpy for the following reactions: NO…

A: ∆H of a reaction is the amount of heat released in the reaction.

Q: 4 C3H9N(1) + 21 O2(g) → 12 CO2(g) + 18 H2O(1) + 2 N2(1) AH = -9,191 kJ Use this information and the…

A: Standard enthalpy of formation can be calculated as, ∆Horeaction=∆Hproduct-∆Hreactant

Q: Use standard enthalpies of formation to determine the change in enthalpy for the following reaction:…

A: Applying concept of calculation of chage of enthalpy of chemical reaction. ∆Hreaction= ∆Hf…

Q: 0.3 g of CaO was added to 59mL H2O at 23.5 degrees Celcius in a cup calorimeter to produce Ca(OH)2.…

Q: The standard enthalpy of combustion of methane gas, CH4 (9), is -890.1 kJ/mol at 298 K. Given the…

Q: For the chemical reaction H2 (g) + F2 (g) →2 HF (g) AH° = -79.2 kJ/mol. What is the enthalpy for the…

A: The enthalpy of a reaction is dependant on the stoichiometric coefficients of reactants and products…

Q: A scientist measures the standard enthalpy change for the following reaction to be -661.2 kJ : ...…

Q: For the chemical reaction H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the enthalpy for…

A: Heat of formation, also called standard heat of formation, enthalpy of formation, or standard…

Q: Given the thermochemical equations X, + 3 Y, → 2XY, ΔΗ = -390 kJ - X, + 2Z, – 2 XZ, AH2 = -120 kJ…

Q: Given the thermochemical equations X₂ + 3Y₂ → ->> 2XY, X₂ +2Z₂ → 2XZ₂ ΔΗ, = -160 kJ 2Y₂+Z₂2Y₂Z AH3 =…

A: Given, a) X2 + 3 Y2 -----> 2 XY3 ∆H1 = -320 kJ b) X2 + 2 Z2 -----> 2 XZ2 ∆H2 = -160 kJ c) 2…

Q: For the chemical reaction Ca (s) + ½ O, (g) → CaO (s) AH° = -635 kJ/mol. What is the enthalpy for…

A: The given reaction is, 2CaO(s) ---> 2Ca(s) + O2(g) The chemical reaction given is, 1) Ca(s) +…

Q: Given the thermochemical equations X, +3 Y, – 2XY3 AH1 = -380 kJ X, +2Z, ► 2 XZ, AH2 = -110 kJ 2 Y,…

Q: Using the equations H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol C (s) + 2 F2 (g)→ CF4 (g) AH° =…

Q: Consider the following four cases: (i) A chemical process in which heat is absorbed, (ii) A change…

A: Given here four cases and we are asked in how many of these cases does the internal energy of the…

Q: 3. Calculate the enthalpy for this reaction: 3NO2(g) + H2O(E) --> 2HNO3(aq) + NO(g) given the…

A: Enthalpy of Reaction is difference between Enthalpies of formation of Products and Reactants.

Q: Given the thermochemical equations X, + 3 Y, → 2XY, AH1 = -390 kJ %3D X, + 2Z, → 2 XZ, AH2 = -120 kJ…

A: We have to calculate the enthalpy change for given reaction.

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: Given the thermochemical equations X, +3 Y, - → 2XY; AH1 = -330 kJ X, + 2Z, 2 XZ, AH2 = -190 kJ %3D…

A: Given data is as follows: X2 + 3Y2 → 2XY3 ∆H1=-330 kJ ...... (1)…

Q: For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol. What is the enthalpy for…

A: Ca (s) + ½ O₂ (g) → CaO (s) ∆H1° .............................(1) 2 CaO (s) → 2 Ca (s) + O₂ (g)…

Q: The hypothetical element X and an oxide of X undergo the following reactions with oxygen, with the…

A: Answer: -150 KJ Solution:

Q: Consider the hypothetical thermochemical equation 3 A + B → 2 C for which AH = 63.1 kJ/mol. Which…

Q: For the chemical reaction H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the molar enthalpy…

Q: 2.Use standard enthalpies of formation from Table 1 to determine the standard enthalpy hanges in the…

A: The problem is solved by enthalpy change concept.

Q: to calculate the true enthalpies of these reactions by the Hess’ law, as: ΔH°(rxn) = Σ[ν ×…

Q: Using the equations 2 Sr(s) + O2 (g) 2 Sro (s) AH° = -1184 kJ/mol CO2 (g) - C (s) + O2 (g) AH° = 394…

A: Interpretation: From the given information, the enthalpy of new reaction is to be determined. Given…

Q: Given the thermochemical equations X, + 3 Y, → 2XY; AH| = -370 kJ X, + 2Z, → 2 XZ, AH2 = -180 kJ 2…

Q: Using the provided table, determine the enthalpy (in kJ/ mol) for the reaction 2 NH3 (g) + 3 N,0…

A: The given reaction is: 2NH3 (g) + 3N2O (g) → 4N2 (g) + 3H2O (g) The given enthalpies of formation…

Q: A system absorbs 1.54E2 kJ of heat and the surroundings do 1.118E2 kJ of work on the system. What is…

A: 2.618E2 = 2.618 * 10^2 kJ

Question

Question 13

Given the thermochemical equations
X, + 3 Y,
2 XY3
AH1 = -390 kJ
>
X, + 2Z,
→ 2 XZ,
AH2 = -170 kJ
2 Y, + Z, → 2Y,Z
AH3 = -250 kJ
Calculate the change in enthalpy for the reaction.
4 XY, + 7Z, →
6 Y,Z + 4XZ,
3
ΔΗ-
kJ

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2 Calculation

VIEW

Step 3 Answer

VIEW

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

One of the components of jet engine fuel is n-dodecane, C12H26(), which has a standard enthalpy of combustion of 8080.1 kJ/mol. (a) Write the thermochemical equation for the combustion of n-dodecane. (b) Use the standard enthalpies of formation in Appendix G to calculate the standard enthalpy of formation of n-dodecane.
Nitrogen gas is confined in a cylinder with a movable piston under a constant pressure of 9.95 104 Pa. When 695 J of energy in the form of heat is transferred from the gas to the surroundings, its volume decreases by 1.88 L. What is the change in internal energy of the gas?
Nitrogen gas (2.75 L) is confined in a cylinder under constant atmospheric pressure (1.01 105 pascals). The volume of gas decreases to 2.10 L when 485 J of energy is transferred as heat to the surroundings. What is the change in internal energy of the gas?
The octane number of gasoline is based on a comparison of the gasolines behavior with that of 2,2,4-trimethylpentane, C8H18(), which is arbitrarily assigned an octane number of 100. The standard enthalpy of combustion of this compound is 5456.6 kJ/mol. (a) Write the thermochemical equation for the combustion of 2,2,4-trimethylpentane. (b) Use the standard enthalpies of formation in Appendix G to calculate the standard enthalpy of formation of 2,2,4-trimethylpentane.
Would the amount of heat absorbed by the dissolution in Example 5.6 appear greater, lesser, or remain the same if the heat capacity of the calorimeter were taken into account? Explain your answer.
Calculate the standard enthalpy of combustion for benzene, C6H6. C6H6() + 15/2 O2(g) 6 CO2(g) + 3 H2O() rH = ? The enthalpy of formation of benzene is known [rH[C6H6()] = +49.0 kJ/mol], and other values needed can be found in Appendix L.
Benzoic acid, C6H5COOH, is a common standard used in bomb calorimeters, which maintain a constant volume. If 1.20 g of benzoic acid gives off 31, 723 J of energy when burned in the presence of excess oxygen and in a water bath having a temperature of 24.6 C, calculate q, w, H, and U for the reaction.
Microwave ovens convert radiation to energy. A microwave oven uses radiation with a wavelength of 12.5 cm. Assuming that all the energy from the radiation is converted to heat without loss, how many moles of photons are required to raise the temperature of a cup of water (350.0 g, specific heat =4.18J/gC) from 23.0C to 99.0C?
What is the change in internal energy when a gas contracts from 377mL to 119mLundera pressure of 1550 torr, whileat the same time being cooled by removing 124.0J ofheat energy?
In a coffee-cup calorimeter, 100.0 mL of 1.0 M NaOH and 100.0 mL of 1.0 M HCI are mixed. Both solutions were originally at 24.6C. After the reaction, the final temperature is 31.3C. Assuming that all the solutions have a density of 1.0 g/cm3 and a specific heat capacity of 4.18 J/Cg, calculate the enthalpy change for the neutralization of HCl by NaOH. Assume that no heat is lost to the surroundings or to the calorimeter.
Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C4H4 ( 2341 kJ/mol), C4H8 (2755 kJ/mol), and H2 (286 kJ/mol), calculate H for the reaction C4H4(g)+2H2(g)C4H8(g)
sample of natural gas is analyzed and found to be88.4% methane (CH4) and 11.6% ethane (C2H6) bymass. The standard enthalpy of combustion of methaneto gaseous carbon dioxide (CO2) and liquid water (H2O) is -891 kJ/mol. Write the equation for the combustionof gaseous ethane to carbon dioxide and water.Calculate the standard enthalpy of combustion of ethaneusing standard enthalpies of formation from Table R-11on page 975. Using that result and the standard enthalpyof combustion of methane in Table 15.3, calculate theenergy released by the combustion of 1 kg of natural gas.