**Question:** Give an example of a reaction that represents the heat of formation?**Explanation:**In chemistry, the heat of formation (also known as the standard enthalpy of formation) refers to the change in enthalpy when one mole of a compound is formed from its elements in their standard states. An example of such a reaction is the formation of water from hydrogen and oxygen:\[ \text{H}_2(g) + \frac{1}{2}\text{O}_2(g) \rightarrow \text{H}_2\text{O}(l) \]In this reaction, hydrogen gas and oxygen gas combine to form liquid water, releasing heat in the process. The enthalpy change of this reaction provides information about the stability of the compounds involved and the energy required or released during the reaction.

Answered: Image /qna-images/answer/4211dde2-fb0d-403b-a36a-a50c03be4862.jpg

Answered: Give an example of a reaction that…

Science

Chemistry

Give an example of a reaction that represents the heat of formation?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Consider the chemical equation 2 A + 3 B ---> 4 C + D The reaction enthalpy is 705 kJ How many…

Q: A sample of sucrose was burned in a calorimeter, and 41,600 joules of heat energy were released.…

A: Energy can neither be created nor be destroyed. Thus, heat released from sample of sucrose is…

Q: The following thermochemical equation is for the reaction of HCl(g) with NH3 (9) to form NH4Cl(s)…

A: This is exothermic reaction as ∆H of the reaction is negative. 1 mole ammonia react with 1 mole…

Q: Suppose that the molar enthalpy of a reaction is -73.45 kJ/mol and 4.222 moles are reacted. How many…

Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a…

Q: What is the specific heat of a 66.51 g piece of an unknown metal that exhibits a 45.2°C temperature…

A: The relation between specific heat and heat energy is given by q = m * C * ΔT Where q = heat energy…

Q: A gold ball with a mass of 138 g has been heated to a temperature of 92.4°C and is then dropped into…

Q: A chemist measures the energy change AH during the following reaction: Cl₂(g) + H₂(g) → 2 HC1(g) ΔΗ…

Q: Piece of metal with a mass of 48.342 g at an initial temp of 108 C is placed into 50 g of water…

A: Given, mass of metal =48.342 graminitial temperature of metal =108 °Cmass of water =50 graminitial…

Q: f a system does 19.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…

A: We can find the change in the internal energy of the system(∆U) by using the equation for the 1st…

Q: The temperature of 756 g of water in a calorimeterincreases from 23.2°C to 37.6°C. How much heat…

A: Given: Mass = 756g Initial temperature= 23.2oC Final temperature= 37.6oC To find: The heat given off…

Q: MUST SHOW ALL WORK AND UNITS 1. The temperature of a 98.7 g piece of metal increases from 17.0 °C to…

A: Thermodynamics is the branch of chemistry which deals with the study of heat and other forms of…

Q: Which of the following statements are true? AH for an endothermic reaction is positive AH for an…

A: The objective of the question is to identify the statements that are true.

Q: Can you conclude that heat is always noticeably released in a chemical reaction?

A: Can you conclude that heat is always noticeably released in a chemical reaction? answer of the…

Q: 17) A 22.9 g sample of iron absorbs 155 J of heat, sample upon which the temperature of the…

Q: A chemist measures the energy change AH during the following reaction: C3Hg(g)+50₂(g) → 3 CO₂(g) +…

A: mass of C3H8 = 95.4 g

Q: A chemist measures the energy change AH during the following reaction: 2 H₂O(l) → 2 H₂(g) + O₂(g)…

A: In this question we have identify the given reaction is endothermic or exothermic and calculate the…

Q: In the laboratory a student finds that it takes 200 Joules to increase the temperature of 15.0 grams…

A: • The values provided in the question are:- i) Mass of magnesium, m = 15.0 g ii) Initial…

Q: Which of the following equations represents a reaction that provides the heat of formation of…

A: The standard enthalpy of formation of a compound is the change in the standard enthalpy when one…

Q: A chemist measures the energy change AH during the following reaction: Cl₂(g)+H₂(g) → 2 HCl(g) ΔΗ=…

Q: A 440.0 g quantity of a certain metal is heated to 100.0 C. It is immediately placed into 258 g of…

Q: heat for the combustion of sucrose (table sugar, C12H22O11) is -5,647 kJ for

A: Number of moles = mass/ molar mass Number of moles of O2 = mass of O2/molar mass of O2

Q: A chemist measures the energy change AH during the following reaction: C3H₂(g) +50₂(g) → 3 CO₂(g) +…

A: Exothermic reaction and endothermic reaction:Exothermic reaction : Exothermic reactions are reaction…

Q: In a calorimeter, the temperature of 60.0g of water increases from 23.3°C to 38.7°C when a 102.4°C…

A: We can use the following equation to calculate the specific heat of the nickel: q=mNi×CNi×ΔTNi where…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe₂O3(s) → 4 FeO(s) + O₂(g)…

A: During a chemical reaction, when heat is released it is called as exothermic reaction and when heat…

Q: The amount of energy needed to heat 2.00g of carbon from 50.0C to 80.0C is 42.56J. The specific…

Q: An automobile engine provides 519 Joules of work to push the pistons.In this process the internal…

A: The objective of the question is to calculate the amount of heat (q) that must be carried away by…

Q: What is the specific heat of a 72.01 g piece of an unknown metal that exhibits a 45.2°C temperature…

A: Given data is mass of sample = 72.01 g Temperature = 45.2 oC Heat absorbed = 1870 J Formula used…

Q: A chemist measures the energy change AH during the following reaction: Cl₂(g) + H₂(g) → 2 HCl(g) Use…

Q: 7. 200g of copper is placed in an oven. The hot metal is removed from the oven and quickly added to…

Q: How can I find heat of formation from the heat of combustion?

A: I have explained it with the example of methane . By the following data we can get enthalpy of…

Q: A piston compresses the air in the cylinder by doing 71.0 J of work on the air. As a result, the…

A: Given:- The work done in compressing the air in the cylinder ΔW=71 J The amount of energy released…

Q: ystem does 675 kJ of energy onto its surroundings while releasing 1543 J of heat. What is the change…

A: To find the change in energy of the system, you need to consider both the work done by the system…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe₂O3(s)→ 4 FeO(s) + O₂(g)…

A: We have to predict the nature of reaction, heat absorbed, amount of heat absorbed.

Q: From a molecular viewpoint, where does the energy absorbed in an endothermic chemical reaction go?…

A: In an endothermic reaction energy flows from surroundings to system (chemical molecules composing…

Q: For a process at constant pressure, 6.20 x 10* calories of heat are released. This quantity of heat…

A: Inorder to convert kilocalorie to joule, multiply the energy value by 4184. So, 1 kcal = 4184 J 1…

Question

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 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

Write the thermochemical equation for the heat of formation of acetic acid (liquid)
A gas is compressed from an initial volume of 5.70 L to a final volume of 1.24 L by an external pressure of 1.00 atm. During the compression the gas releases 125 J of heat. What is the change in internal energy of the gas?
A chemist measures the energy change AH during the following reaction: CH₂(g) +20₂(g) → CO₂(g) + 2H₂O(l) Use the information to answer the following questions. This reaction is... Suppose 37.8 g of CH₁ react. Will any heat be released or absorbed? If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed. Round your answer to 3 significant digits. AH = -882. kJ endothermic. O exothermic. OYes, absorbed. O Yes, released. O No. kJ x10 Start over Ś
A calorimeter is an insulated device in which a chemical reaction is contained. By measuring the temperature change, AT, we can calculate the heat released or absorbed during the reaction using the following equation: Constants Periodic Table Part A q = specific heat x mass x AT A calorimeter contains 30.0 mL of water at 14.0 °C. When 1.70 g of X (a substance with a molar mass of 76.0 g/mol ) is added, it dissolves via the reaction Or, if the calorimeter has a predetermined heat capacity, C, the equation becomes X(s) + H2O(1)→X(aq) q=C x AT and the temperature of the sblution increases to 30.0 °C At constant pressure, the enthalpy change for the reaction, AH, is equal to the heat, qp; that is, Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that of water (4.18 J/(g. °C)J, that density of water is 1.00 g/mL, and that no heat is lost to the calorimeter itself, nor to the suroundings. ΔΗp Express the…
Suppose that the molar enthalpy of a reaction is -69.06 kJ/mol and 1.134 moles are reacted. How many kilojoules of heat are released by the reaction? Report your answer to three decimal places (ignore significant figures).
6. A substance increases in temperature by 55°C when a 98 g sample of it absorbs 80000 J of heat. What is the specific heat capacity of the substance?
Suppose that the molar enthalpy of a reaction is -61.27 kJ/mol and 4.799 moles are reacted. How many kilojoules of heat are released by the reaction? Report your answer to three decimal places (ignore significant figures).
If 67.2 J of heat is added to a 24.6 g sample of silver, how much will the temperature increase by? The specific heat of silver is 0.235 J/goC.
A gas expands and does work on the surroundings equal to 6.14 L atm. At the same time, it releases 97 J of heat to the surroundings. What is the change in energy in J of the gas?
How much heat is evolved when 8.89x10° g of ammonia is produced according to the following equation? (Assume that the reaction occurs at constant pressure.) N2(9) + 3H,(g) - 2NH3(g); AH = -91.8 k) kJ evolved
A group of students place 15.41g of a metal into a test tube. They place the test tube into a beaker of boiling water until the temperature of the metal was 89.8°C. Then they quickly place the heated metal into a beaker of 10.47g of water with an initial temperature of 16.4°C. The temperature of the mixturecame to rest at 26.1°C. What is the specific heat of the metal used? (CH2O = 4.18 J/g°C)
Write the balanced chemical equation and draw an enthalpy diagram for the formation of 1 molof sodium chloride from its elements (heat is released).