Question

Предложите три способа как из ненасыщенного раствора сделать насыщенный раствор. (3балл) Сколько граммов соли и воды потребуется для приготовления 300г раствора, если растворимость хлорида калия при 500С составляет 20г/100г воды? (3балла)Сколько граммов нитрата бария нужно растворить в 500г воды для приготовления насыщенного раствора при 700С? (4балла)​

Answer 1

1 фото это задача на 3 балла

2 фото это задача на 4 балла

Answer 2

Three ways to make a saturated solution from an unsaturated solution:

1. Increase the temperature: By heating the unsaturated solution, you can increase the solubility of the solute and make it more likely to dissolve until the solution becomes saturated. This method is commonly used for solid solutes. 2. Add more solute: By adding more solute to the unsaturated solution, you can increase the concentration of the solute until it reaches the saturation point. This method is commonly used for both solid and liquid solutes. 3. Evaporate the solvent: By evaporating the solvent from the unsaturated solution, you can increase the concentration of the solute until it becomes saturated. This method is commonly used for solutions where the solute is more soluble than the solvent.