Solutions (solubility): Which of the following substances is the most soluble in water at room temperature? Compare typical solubilities of common salts. Choose the correct substance.
General Knowledge
General Science
Difficulty: Easy
Choose an option
Answer
Correct Answer: Ammonium nitrate (NH₄NO₃)
Explanation
Given data
- Ask: Most water-soluble substance among common salts.
Concept/Approach At ~20–25 °C, ammonium nitrate has an exceptionally high solubility (well over 100 g per 100 g water), higher than KNO3 (~30–35 g/100 g water) and NaCl (~36 g/100 g water). CaCO3 is sparingly soluble.
Final Answer Ammonium nitrate (NH₄NO₃)