Konsantrasyon

The solubility of X is 24g/100 g water at room temperature. Which of the following solution is unsaturated at room temperature?

Which order can be applied to prepare a solution from a solid?

I. Put a weighted amount of solute in a volumetric flask.

II. Add more water to fill the container to the volume marker.

III. Dissolve the solid in water by swirling the flask.

IV. Add a small amount of water.

• I, III, II, IV

• I, II, III, IV

• I, IV, III, II

• III, I, II, IV

• III, IV, II, I

Which solution is the most diluted solution?

If 20% by mass of 40 g salt solution, 50% by mass of 80 g salt solution, 12 g of salt and 108 g of water are mixed, what is the mass percentage of final solution?

Which of the following is not correct, if more sugar is added and dissolved in the solution below?

• The solution type is solid in a liquid in which solute is sugar and solvent is water.

• The solution has a lower freezing point.

• The solution has a higher boiling point.

• The solution conduct electricity more strongly.

• The solution is more concentrated.

How many grams of water should be added to 250 g of 60% sugar solution to make it 40%?

200 g of 25% salt solution and 300 g of X% salt solution are mixed. Calculate the value of X in order to obtain 40% salt solution.