Sunday
April 20, 2014

Homework Help: Chemistry

Posted by JJ on Tuesday, April 29, 2008 at 11:42am.

2 H2S (g) + SO2 (g) <===> nn3 S (s) + 2 H2O (g)
1) At 298 K, the standard enthalpy change, HX, for the reaction represented below is -145 kilojoules.
(a) Predict the sign of the standard entropy change, SX, for the reaction. Explain the basis foryour prediction.

(b) At 298 K, the forward reaction (i.e., toward the right) is spontaneous. What change, if any, would occur in the value of GX for this reaction as the temperature is increased? Explain your reasoning using thermodynamic principles.

(c) What change, if any, would occur in the value of the equilibrium constant, Keq, for the situation described in (b)? Explain your reasoning.

(d) The absolute temperature at which the forward reaction becomes non spontaneous can be predicted. Write the equation that is used to make the prediction. Why does this equation predictonly an approximate value for the temperature?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

college chemistry - Use the thermochemical equations shown below to determine ...
chemistry - how in the world do you do this problem? Use the thermochemical ...
chemistry - Use the thermochemical equations shown below to determine the ...
Chem - Change in enthalpy problem. Consider the reaction represented below. ...
chemistry - How to calculate enthalpy change of the following reaction? : S + ...
chemistry - Calculate enthalpy change of reaction for the combustion of gaseous ...
CHEMISTRY - Consider the following reaction: 2H2S+SO2=S(s)+H2O A reaction ...
AP Chemisty - N2(g)+3F2 yields 2Nf3(g) Delta H(degree)298=-264KJ mol-1;Delta S(...
chemistry - Use standard enthalpies of formation to calculate ΔHrxn for ...
chemistry - A scientist measures the standard enthalpy change for the following ...

Search
Members