Homework Help: chemistry

Posted by jen on Tuesday, October 25, 2011 at 9:21pm.

use standard enthalpies of formation to calculate delta Hrxn for the following reaction. 2H2S(g)+3O2(g)-->2H2O(l)+2SO2(g) express the answer using four significant figures
Delta Hrxn = ? kJ

chemistry - DrBob222, Tuesday, October 25, 2011 at 9:24pm
DHfrxn = (n*DHf products)-(n*DHf reactants)
Look up DHf values in your text or notes.
chemistry - jen, Tuesday, October 25, 2011 at 9:38pm
we dnt take notes thats why im so lost
chemistry - DrBob222, Tuesday, October 25, 2011 at 9:59pm
Then look in your text. Most texts have a set of delta H^o_f values.
chemistry - DrBob222, Tuesday, October 25, 2011 at 10:00pm
And I might suggest you take notes. You can't possibly remember everything.
chemistry - jen, Tuesday, October 25, 2011 at 10:18pm
honestly all we do is labs during class i would love to take notes
chemistry - DrBob222, Tuesday, October 25, 2011 at 10:53pm
Do you have a table in your text? I may be able to find a table on the web or I can look up some values if your text doesn't have them listed.

Answer this Question

Related Questions

chemistry - use standard enthalpies of formation to calculate delta Hrxn for the...
Chemistry - Use enthalpies of formation from the textbook to calculate the ...
chemistry - Which of the following equations represents a reaction for which the...
Chemistry - 2)Which of the following equations represents a reaction for which ...
chemistry - Consider the following reaction: 2H2S (g) + 3O2 (g) --> 2SO2...
Chemistry - Hydrogen and methanol (CH3OH) have both been proposed as ...
College Chem - Calculate the enthalpy of reaction from the standard enthalpies ...
Chemistry - Calculate the enthalpy change for the reaction: 2S(s) + 3O2(g) --&...
Chemistry - In the reaction 2H2S + 3O2 -> 2SO2 +2H2O, the oxidizing agent...
chemistry - Calculate enthalpy change of reaction for the combustion of gaseous ...

For Further Reading

First Name:
School Subject:
Answer: