Question
In mixture $$A$$ and $$B$$ components show -ve deviation as
A.
$$\Delta {V_{mix}} > 0$$
B.
$$\Delta {H_{mix}} < 0$$
C.
$$A - B$$ interaction is weaker than $$A - A$$ and $$B - B$$ interaction
D.
$$A - B$$ interaction is stronger than $$A - A$$ and $$B - B$$ interaction.
Answer :
$$A - B$$ interaction is stronger than $$A - A$$ and $$B - B$$ interaction.
Solution :
In solution containing $$A$$ and $$B$$ component showing negative deviation $$A - A$$ and $$B - B$$ interactions are weaker than that of $$A - B$$ interactions. For such solutions.
$$\Delta H = - ve\,\,{\text{and}}\,\,\Delta V = - ve$$