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In the laboratory a student finds that it takes 3.25x10 Joules to increase the temperature of 14.3 grams of gaseous hydrogen from 20.2 to 37.4 degrees Celsius. The specific heat of hydrogen calculated from her data is | J/g°C.

In the laboratory a student finds that it takes 3.25x10 Joules to increase the temperature of 14.3 grams of gaseous hydrogen from 20.2 to 37.4 degrees Celsius. The specific heat of hydrogen calculated from her data is | J/g°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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Heat Capacity Definitions The Specific Heat, Csp. of a substance is the energy required to raise the temperature of one gram of the substance, one degree. It is usually reported in units of (Joules/gram °C). The term "specific" means "per gram". The Molar Heat Capacity, Cn refers to the energy required to raise the temperature of one mole of a substance by one degree and has units of (Joules/mole °C). You can represent the energy required to raise the temperature of any substance by the equations: q = m CspAT if you are in units of grams Or q = fn C„AT if you are in units of moles Where: = Energy in Joules m = mass of substance n moles of substance AT= (Tinal - Tinitial) Use these equations whenever you heat or cool a substance or if you want to calculate the specific heat of a substance. DO NOT use these equations when a substance undergoes a phase change (boiling, freezing, etc.). To calculate the energy for a phase change you must know the molar heat of fusion, AHfusion the molar heat of vaporization, AH aporization: or the molar heat of sublimation, AHublimation-
Transcribed Image Text:Heat Capacity Definitions The Specific Heat, Csp. of a substance is the energy required to raise the temperature of one gram of the substance, one degree. It is usually reported in units of (Joules/gram °C). The term "specific" means "per gram". The Molar Heat Capacity, Cn refers to the energy required to raise the temperature of one mole of a substance by one degree and has units of (Joules/mole °C). You can represent the energy required to raise the temperature of any substance by the equations: q = m CspAT if you are in units of grams Or q = fn C„AT if you are in units of moles Where: = Energy in Joules m = mass of substance n moles of substance AT= (Tinal - Tinitial) Use these equations whenever you heat or cool a substance or if you want to calculate the specific heat of a substance. DO NOT use these equations when a substance undergoes a phase change (boiling, freezing, etc.). To calculate the energy for a phase change you must know the molar heat of fusion, AHfusion the molar heat of vaporization, AH aporization: or the molar heat of sublimation, AHublimation-
In the laboratory a student finds that it takes 3.25x103 Joules to increase the temperature of 14.3 grams of gaseous hydrogen from 20.2 to 37.4 degrees Celsius. The specific heat of hydrogen calculated from her data is |J/g°C.
Transcribed Image Text:In the laboratory a student finds that it takes 3.25x103 Joules to increase the temperature of 14.3 grams of gaseous hydrogen from 20.2 to 37.4 degrees Celsius. The specific heat of hydrogen calculated from her data is |J/g°C.
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