The mixture of calcium acetate and calcium formate on dry distillation gives -----which gives ----- precipitate on heating with Fehling’s solution.

The mixture of calcium acetate and calcium formate on dry distillation gives acetone. Acetone gives a red precipitate on heating with Fehling’s solution.

Here are the steps:

1. Dry distillation of calcium acetate and calcium formate: This process involves heating the mixture in the absence of air, which causes it to decompose and produce acetone.

2. Heating acetone with Fehling’s solution: Fehling’s solution is a reagent used to detect the presence of aldehydes and reducing sugars. When heated with acetone, it reacts to form a red precipitate. This is due to the reduction of the copper(II) ions present in Fehling’s solution to copper(I) oxide, which is red.