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Author Question: A 2.38 g sample of phenol (C6H6O, molar mass = 94.11 g mol-1) was combusted in a bomb calorimeter ... (Read 227 times)

LCritchfi

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on: Nov 18, 2019

Question 1

A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g mol-1) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ °C-1. If the temperature rose from 29.5 °C to 69.8 °C, determine the value of DrU for the combustion of aniline.
◦ +1.71 × 103 kJ mol-1
◦ -3.20 × 103 kJ mol-1
◦ -1.71 × 103 kJ mol-1
◦ +7.81 × 103 kJ mol-1
◦ -7.81 × 103 kJ mol-1

Question 2

A 2.38 g sample of phenol (C6H6O, molar mass = 94.11 g mol-1) was combusted in a bomb calorimeter with a heat capacity of 6.65 kJ °C-1. If the temperature increased from 23.8 °C to 35.4 °C, determine DrU for the combustion of phenol.
◦ -8.19 × 103 kJ mol-1
◦ -5.81 × 103 kJ mol-1
◦ 4.87 × 103 kJ mol-1
◦ 2.41 × 103 kJ mol-1
◦ -3.05 × 103 kJ mol-1
Chemistry: A Molecular Approach (Canadian) ¦ Tro, Fridgen, Shaw ¦ 2nd Edition
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Marked as best answer by LCritchfi on Nov 18, 2019

helenmarkerine

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Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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LCritchfi

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Reply 2 on: Nov 18, 2019
Excellent

tanna.moeller

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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