In te following reaction HOw much heat is released from the reaction of 76.0 g o
ID: 508672 • Letter: I
Question
In te following reaction
HOw much heat is released from the reaction of 76.0 g of HBr
Durham Te www.saplinglearning.com/ibiscms/mod/ibiswipw.php?id 3237085&proceed; 1 e App isl col G duke baba nane zar ays Dade B lsun skewl Jamal G yt fra rep D ytiar E hm M m4k A GM C comp tia G Chrome Cleanup Play Drag Balzo Oth 4/8/2017 11:ss PM A Time Remaining 1 H 29 M Gradebook OAssignment Information Available From: 4f 6/2017 06:00 PM Question 2 of 24 4/8/2017 11:55 PM Due Date Sapling Learning Points Possible 00 rittenty ry College Grade Category: Exams (Online Lectures In the following reaction Description: HBr+ Ca (oH), Br, 2H,O AH 430.0 kJ Policies Exam How much heat is released from the reaction of 76.0 g HBr? You can see if your answers are correct once the solutions are available. Number Do not include a or sign. kJ You can view solu ions after the due date. O eTextbook O Help With This Topic O Web Help & Videos O Technical Support and Bug Reports 12 A Previous Next Save And Exit about us career partners privacy policy Terms of use contact us hel 2011-2017 Sapling Learning, Inc.Explanation / Answer
mol of HBr = mass of HBr/molar mass of HBr
= 76.0 g / 80.91 g/mol
= 0.939 mol
According to reaction,
for 2 mol of HBr, heat released = 430.0 KJ
so,
form. 0.939 mol, heat released = 430.0 * 0.939 / 2
= 202 KJ
Answer: 202 KJ
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