Question

Which salt shows the least solubility change when the temperature is increased from 0 to 100 c?

Answer 1

Correct answer: NaCl (sodium chloride)

Solubility of a salt is the amount of salt in grams that can be dissolved in 100 mL of water at a particular temperature. The solubility curve shows the amount of a particular salt that can be dissolved in 100 mL of water at different temperatures. For most of the salts, solubility increases as the temperature raises. But there are some ammonium salts, the solubility decreases as the temperature is increased. Sodium chloride is the salt whose solubility remains unaffected as the temperature increases from $0^{0}C to 100^{0}C$

Answer 2

Sodium chloride (NaCl), whose only changes about 5g/100mL water over that entire range 100°C)