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Which of the following reactions have a positive ΔSrxn? Check all that apply.?
2A(g)+B(g)--->4C(g)
A(s)+B(s)---->C(g)
A(g)+2B(g)--->2C(g)
2A(g)+B(g)--->C(g)
3 個解答
- 匿名4 年前
I think you mean entropy
For entropy to be positive solids should be turned into liquid or gases.
In gases
Moles of gaseous products > Moles of gaseous reactants
For reaction
1st reaction - Entropy is positive (moles of products > Reactants)
2nd reaction - Entropy is positive (solid is turned into gas)
3rd reaction - Entropy is negative (moles of products < reactants)
4th reaction - Entropy is negative (moles of products < reactants)
- DylanLv 64 年前
So you want something that is more discorded.
So this is solids turning to liquids and liquids turning to gasses
or 1 mole of gas turning into two moles of gas ect.
A(s)+B(s)---->C(g)
Solids turning to gas so more disorder, positive delta S