Chemical Forums
1 Hour
1 Day
1 Week
1 Month
Forever
November 12, 2024, 01:20:02 AM
Forum Rules
: Read This Before Posting
Home
Help
Search
Login
Register
Chemical Forums
Chemistry Forums for Students
Undergraduate General Chemistry Forum
Quick assistance needed on chemistry heat question
« previous
next »
Print
Pages: [
1
]
Go Down
Topic: Quick assistance needed on chemistry heat question (Read 6897 times)
0 Members and 1 Guest are viewing this topic.
Gweedo8
Regular Member
Posts: 25
Mole Snacks: +0/-2
Quick assistance needed on chemistry heat question
«
on:
July 06, 2009, 04:59:17 PM »
What volume of benzene (C6H6, d= 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5 x 103 kJ of heat according to the following reaction?
2C6H6(l)+15O2(g)-->12CO2(G)+6H2O(g) :delta:Hrxn=-6278kj
Logged
sjb
Global Moderator
Sr. Member
Posts: 3653
Mole Snacks: +222/-42
Gender:
Re: Quick assistance needed on chemistry heat question
«
Reply #1 on:
July 06, 2009, 05:09:28 PM »
Well, 1.5 x 103 kJ = 154.5 kJ.
Your reaction gives off 3139 kJ mol
-1
of benzene, so how many moles of benzene do you need? Which is what mass of benzene, and so what volume?
Logged
Print
Pages: [
1
]
Go Up
« previous
next »
Sponsored Links
Chemical Forums
Chemistry Forums for Students
Undergraduate General Chemistry Forum
Quick assistance needed on chemistry heat question