Domanda del libro di testo
Consider the data about gold metal in Exercise 5.24(b). c. What is the molar heat capacity of Au(s)?
2
views
Ch.5 - Thermochemistry
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 5, Problema 53b
The specific heat of ethanol, C2H5OH(l), is 2.44 J•g/K. b. Which will require more heat, increasing the temperature of 1 mol of C2H5OH(𝑙) by a certain amount or increasing the temperature of 1 mol of H2O(𝑙) by the same amount?
Guida verificata passo dopo passo1
Identify the specific heat capacity of both substances: Ethanol (C_2H_5OH) has a specific heat capacity of 2.44 J/g·K, and water (H_2O) has a specific heat capacity of 4.18 J/g·K.
Calculate the molar mass of ethanol (C_2H_5OH) by adding the atomic masses of its constituent atoms: 2 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom.
Calculate the molar mass of water (H_2O) by adding the atomic masses of its constituent atoms: 2 hydrogen atoms and 1 oxygen atom.
Determine the mass of 1 mole of each substance using their respective molar masses.
Use the formula q = m × c × ΔT to compare the heat required for each substance, where q is the heat absorbed, m is the mass, c is the specific heat capacity, and ΔT is the change in temperature.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Specific Heat Capacity
Specific heat capacity is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius (or one Kelvin). It is a crucial property that varies between different substances, influencing how much heat is needed to change their temperature. In this question, the specific heat of ethanol is given, which allows for comparison with water's specific heat to determine which substance requires more heat for the same temperature change.
Video consigliato:
Percorso guidato
02:19
Heat Capacity
Molar Mass and Moles
Molar mass is the mass of one mole of a substance, typically expressed in grams per mole. Understanding moles is essential in chemistry as it allows for the conversion between mass and the number of particles. In this question, both ethanol and water are considered in terms of moles, which helps in calculating the total heat required to raise their temperatures based on their specific heat capacities.
Video consigliato:
Percorso guidato
02:11Molar Mass Concept
Heat Transfer Equation
The heat transfer equation, often expressed as q = mcΔT, relates the heat absorbed or released (q) to the mass (m), specific heat capacity (c), and the change in temperature (ΔT). This equation is fundamental for solving problems involving temperature changes in substances. In this context, it will be used to compare the heat required for both ethanol and water when their temperatures are increased by the same amount.
Video consigliato:
Percorso guidato
02:19Heat Capacity
Pratica correlata
Domanda del libro di testo
When a 5.10-g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter (Figure 5.18), the temperature rises from 20.5 to 33.2 °C. a. Calculate the quantity of heat (in kJ) released in the reaction.
3
views
Domanda del libro di testo
(d) How many kJ of heat are needed to raise the temperature of 10.00 kg of liquid water from 24.6 to 46.2 °C?
2
views
Domanda del libro di testo
Consider the data about gold metal in Exercise 5.24(b). b. Suppose that the same amount of heat is added to two 10.0-g blocks of metal, both initially at the same temperature. One block is gold metal, and the other is iron metal. Which block will have the greater rise in temperature after addition of the heat?
2
views
Domanda del libro di testo
(b) Calculate the energy needed for this temperature change.
1316
views
Domanda del libro di testo
The specific heat of ethanol, C2H5OH(l), is 2.44 J•g/K. (a) How many J of heat are needed to raise the temperature of 80.0 g of octane from 10.0 to 25.0 °C?
5
views