Question

What happens when barium chloride , potassium iodide , sodium chloride is heated? Did the samples Impart any colour to tge flame ? Does these compunds melt?

Answer 1

Answer:

The colours that should be seen are:

sodium – yellow-orange (typical ‘street lamp’ yellow)

potassium – purple-pink, traditionally referred to as ‘lilac’ (often contaminated with small amounts of sodium)

barium – apple green

these compounds

These compounds will have

Melting and Boiling points: Ionic compounds have high melting and boiling points. This is because a considerable amount of energy is required to break the strong inter-ionic attraction. Nacl will have the highest melting point among others.