Suppose that 3,248 J of heat is removed from 86.5 grams of octane at an initial temperature of 25.0°C. What is the final temperature? (The specific heat of octane, C8H18(l), is 2.22 J/(g °C).)
Suppose that 3,248 J of heat is removed from 86.5 grams of octane at an initial temperature of 25.0°C. What is the final temperature? (The specific heat of octane, C8H18(l), is 2.22 J/(g °C).)
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter15: Energy And Chemical Change
Section15.2: Heat
Problem 12PP
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Question
Suppose that 3,248 J of heat is removed from 86.5 grams of octane at an initial temperature of 25.0°C. What is the final temperature? (The specific heat of octane, C8H18(l), is 2.22 J/(g °C).)
Expert Solution
Step 1
Since the heat of any process at constant pressure is given by
Q = mCΔT
where Q = heat given = -3248 J ( -ve since heat is being removed)
m = mass = 86.5 g
C = specific heat = 2.22 J/(g °C)
ΔT = change in temperature = final temperature - initial temperature = T - 25
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