Question

Why sodium carbonate is more soluble in cold water than in water?

Answer 1

Answer:

Likely, this is due to hydrogen bonding. NaHCO3 has one hydrogen bond donor site, but Na2CO3 has none. For an organic compound, one hydrogen bond for each four-five carbons may be enough to make it water soluble. Sodium carbonate is way more soluble than sodium bicarbonate at all temperatures above about freezing.

Answer 2

Answer:

Likely, this is due to hydrogen bonding. NaHCO3 has one hydrogen bond donor site, but Na2CO3 has none. For an organic compound, one hydrogen bond for each four-five carbons may be enough to make it water soluble. Sodium carbonate is way more soluble than sodium bicarbonate at all temperatures above about freezing.

Explanation: