/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 33 You are given \(\Delta H\) for a... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 5: Problem 33

You are given \(\Delta H\) for a process that occurs at constant pressure. What additional information do you need to determine \(\Delta E\) for the process?

Short Answer

Expert verified
To determine the change in Internal energy (鈭咵) for a process that occurs at constant pressure, given the Enthalpy change (鈭咹), we need the following additional information: 1. The constant pressure (P) at which the process occurs. 2. The change in volume (鈭哣) during the process. This is because the relationship between 鈭咹 and 鈭咵 is given by the formula: \[ \Delta H = \Delta E + P\Delta V \]

Step by step solution

01

Understand the relationship between 鈭咹 and 鈭咵

To find the additional information we need, we have to understand the relation between Enthalpy change (鈭咹) and Internal energy change (鈭咵) for a process that occurs at constant pressure. This relationship is given by the following formula: \[ \Delta H = \Delta E + P\Delta V \] Here, 鈭咹 is the Enthalpy change, 鈭咵 is the Internal energy change, P is the constant pressure, and 鈭哣 is the change in volume.
02

Determine what additional information is needed

From the given relationship between 鈭咹 and 鈭咵, we can see that in order to find 鈭咵, we need to know the pressure (P) and the change in volume (鈭哣) of the process in addition to 鈭咹. Since we already have 鈭咹, the additional information we need is: 1. The constant pressure (P) at which the process occurs. 2. The change in volume (鈭哣) during the process. So, to determine 鈭咵 for a process that occurs at constant pressure, knowing the Enthalpy change (鈭咹), we need the constant pressure (P) and the change in volume (鈭哣) of the process as additional information.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

(a) What is meant by the term system in thermodynamics? (b) What is a closed system?

From the following data for three prospective fuels, calculate which could provide the most energy per unit volume: $$ \begin{array}{lcc} \hline & \begin{array}{c} \text { Density } \\ \text { at } 20{ }^{\circ} \mathbf{C} \\ \left(\mathrm{g} / \mathrm{cm}^{3}\right) \end{array} & \begin{array}{c} \text { Molar Enthalpy } \\ \text { of Combustion } \\ \text { Fuel } \end{array} & \mathrm{kJ} / \mathrm{mol} \\ \hline \text { Nitroethane, } \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{NO}_{2}(l) & 1.052 & -1368 \\ \text { Ethanol, } \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}(l) & 0.789 & -1367 \\ \text { Methylhydrazine, } \mathrm{CH}_{6} \mathrm{~N}_{2}(I) & 0.874 & -1305 \\\ \hline \end{array} $$

When a 9.55-g sample of solid sodium hydroxide dissolves in \(100.0 \mathrm{~g}\) of water in a coffee-cup calorimeter (Figure 5.17), the temperature rises from \(23.6^{\circ} \mathrm{C}\) to \(47.4^{\circ} \mathrm{C}\). Calculate \(\Delta H\) (in \(\mathrm{kJ} / \mathrm{mol} \mathrm{NaOH}\) ) for the solution process $$ \mathrm{NaOH}(s) \stackrel{-\cdots}{\mathrm{Na}}^{+}(a q)+\mathrm{OH}^{-}(a q) $$ Assume that the specific heat of the solution is the same as that of pure water.

(a) What is meant by the term standard conditions, with reference to enthalpy changes? (b) What is meant by the term enthalpy of formation? (c) What is meant by the term standard enthalpy of formation?

Consider the following reaction: $$ 2 \mathrm{Mg}(s)+\mathrm{O}_{2}(g) \longrightarrow 2 \mathrm{MgO}(s) \quad \Delta H=-1204 \mathrm{~kJ} $$ (a) Is this reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when \(2.4 \mathrm{~g}\) of \(\mathrm{Mg}(\mathrm{s})\) reacts at constant pressure. (c) How many grams of \(\mathrm{MgO}\) are produced during an enthalpy change of \(-96.0 \mathrm{~kJ} ?\) (d) How many kilojoules of heat are absorbed when \(7.50 \mathrm{~g}\) of \(\mathrm{MgO}(s)\) is decomposed into \(\mathrm{Mg}(\mathrm{s})\) and \(\mathrm{O}_{2}(g)\) at constant pressure?
See all solutions

Recommended explanations on Chemistry Textbooks

Physical Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Kinetics

Read Explanation

Chemical Analysis

Read Explanation

Chemistry Branches

Read Explanation

Nuclear Chemistry

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.