After being thoroughly stirred at 10.°C, which mixture is heterogenous?(1) 25.0 g of KCl and 100. g of H2O
(2) 25.0 g of KNO3 and 100. g of H2O
(3) 25.0 g of NaCl and 100. g of H2O
(4) 25.0 g of NaNO3 and 100. g of H2O
The answer is (2) KNO3. This depends on the solubility of these four compounds at 10℃. After checking the table, you can find that only KNO3 is less than 25.0 g.
