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Which reaction shows that the enthalpy of formation of cs2 is hf89.4 kjmol?
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What is the standard enthalpy of hydrogenation of 1-butene?
-127 KJmol-1
What can be said about a reaction with H 620 kJmol and S -0.46 kJ(molK)?
it can never be spontanious
What statement describes a reaction at 298 K if H 31 kJmol S 0.093 kJ(molK)?
It is not spontaneous.
What temperature would a reaction with H -220 kJmol and S -0.05 kJ(molK) be spontaneous?
3600 K
How many kJ of energy are required to melt 30.7 g of ice The heat of fusion of water is 6.02 kJmol. The temperature remains constant at 0 and degC. kJ?
10,267 kJ are needed
Which reaction shows that the enthalpy of formation of H2S is Hf -20.6 kJmol?
H2(g) + S(s) —> H2S + 20.6 kJ
What is the standard enthalpy of hydrogenation of 1-butene?
-127 KJmol-1
The ionization energy for sodium is 496 kJmol The electron affinity for chlorine is -349 kJmol what is the enthalpy?
just add them together and you get 147kj
What is an example that shows that the combustion of methane produces 802 kJmol of energy?
The enthalpy of combustion is determined by calorimetry.
What is the standard enthalpy of formation of hydrogen bromide?
[from wikipedia] The standard enthalpy of formation"standard heat of formation" of a compound is the change of enthalpy that accompanies the formation of 1 mole of a substance in its standard state from its constituent elements in their standard states (the most stable form of the element at 1 bar of pressure and the specified temperature, usually 298.15 K or 25 degrees Celsius). Its symbol is ΔHfO.
What can be said about a reaction with H 620 kJmol and S -0.46 kJ(molK)?
it can never be spontanious
What statement describes a reaction at 298 K if H 31 kJmol S 0.093 kJ(molK)?
It is not spontaneous.
At which temperature would a reaction with H -92 kJmol S -0.199 kJ(molK) be spontaneous?
400 K
What can be said about a reaction with triangle H 620 kJmol and triangle S -046 kJ(mol.K)?
it is never spontaneous
Which direction of the reaction equilibrium is favored at 298 K room temperature use the reaction I2 solid to I2 gas when H 62.4 kJmol and S 0.145 kJmolK?
I2(s) --> I2(g); dH=62.4kJ/mol; dS=0.145kJ/mol. The reaction will favor the product at this temperature. Your entropy is positive and your enthalpy is also positive, so this reaction will not be spontaneous at all temperatures. But at room temperature, which is 298K, it will be spontaneous and proceed left to right. (this is the sublimation of iodine)
Which of the following reactions shows h formation of CO2 releases 393.5 kjmol?
C(s)+O2(g) yields CO2(g)+393.5kJ
Ask us anythingUse the reaction I2(s) I2(g) H 62.4 kJmol S 0.145 kJ(molK) for question 10. What can be said about the reaction at 500 K?
It is spontaneous
