1.
In the synthesis of Dibenzalacetone: The molar ratio of benzaldehyde and acetone is exactly 2:1.
What will happen if acetone was used a little more than required?
Solution
The molar ratio of benzaldehyde and acetone is 2:1 in the synthesis. 2 mol of benzaldehyde
reacts with 1 mol of acetone to form 1 mol of dibenzalacetone.
If acetone is used a little more than required, the molar amount of acetone taken would need
twice the molar amount of benzaldehyde. For exmple, if x is the molar amount of acetone, the
molar maount of benzaldehyde needed is 2x.
Here, a little more acetone is added with no increase in the molar amount of benzaldehyde. So,
the amount of the product formed would be the same as before. Since a little more acetone is
added, there will be some unreacted acetone.