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Calculate the heat of combustion at 37°C.

Calculate the heat of combustion at 37°C.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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In many biochemical processes, lactose is a nutrient that is oxidized after the following reaction.

C12H22O11(s)+ 12 O2(g) →12 CO2(g) + 11 H2O(l)

The heat of combustion at 25 °C -5648.8 kJ/mol. Calculate the heat of combustion at 37°C. Lactose C12H22O11(s) has a molar mass of 342.3 g/mol and a specific heat capacity of 1.2 J g-1K-1. How much heat must be added to heat 1 mol of lactose from 25 °C to 37 °C?

(Answer: -5643 kJ; 4929 J)

Forbindelse = compound

Varmekapasitet = Heat capacity

Oppgave 2. Forbrenning av laktose ved 37 °C I mange biokjemiske prosesser er laktose et næringsmiddel som oksideres etter følgende reaksjon. C12H22011(s) + 12 O2(g) → 12 CO₂(g) + 11 H₂O(/) Forbrenningsvarmen ved 25 °C er -5648,8 kJ/mol. Beregn forbrenningsvarmen ved 37 °C. Laktose C12H22O11(s) har molar masse 342,3 g/mol og spesifikk varmekapasitet 1,2 J g¹ K². Hvor mye varme må tilføres for å varme 1 mol laktose fra 25 °C til 37 °C? (Svar: -5643 kJ; 4929 J) C12H22O11(s) Forbindelse Varmekapasitet mol K O₂(g) 29,38 CO₂(g) 37,45 H₂O(l) 75,32
Transcribed Image Text:Oppgave 2. Forbrenning av laktose ved 37 °C I mange biokjemiske prosesser er laktose et næringsmiddel som oksideres etter følgende reaksjon. C12H22011(s) + 12 O2(g) → 12 CO₂(g) + 11 H₂O(/) Forbrenningsvarmen ved 25 °C er -5648,8 kJ/mol. Beregn forbrenningsvarmen ved 37 °C. Laktose C12H22O11(s) har molar masse 342,3 g/mol og spesifikk varmekapasitet 1,2 J g¹ K². Hvor mye varme må tilføres for å varme 1 mol laktose fra 25 °C til 37 °C? (Svar: -5643 kJ; 4929 J) C12H22O11(s) Forbindelse Varmekapasitet mol K O₂(g) 29,38 CO₂(g) 37,45 H₂O(l) 75,32
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