Question

В 150 г воды добавили 27г серной кислоты. рассчитать массовую долю растворённого вещества в растворе. Решите пожалуйста.

Answer 1

Массу чистого вещества умножаешь на 100% и делишь на массу раствора.

Answer 2

Calculation of Mass Fraction of Sulfuric Acid in the Solution

To calculate the mass fraction of sulfuric acid in the solution, we need to know the masses of both the water and sulfuric acid.

Given: - Mass of water = 150 g - Mass of sulfuric acid = 27 g

To find the mass fraction of sulfuric acid, we divide the mass of sulfuric acid by the total mass of the solution (water + sulfuric acid) and multiply by 100 to express it as a percentage.

Let's calculate it:

Step 1: Calculate the total mass of the solution. - Mass of water + Mass of sulfuric acid = 150 g + 27 g = 177 g

Step 2: Calculate the mass fraction of sulfuric acid. - Mass fraction of sulfuric acid = (Mass of sulfuric acid / Total mass of the solution) * 100 - Mass fraction of sulfuric acid = (27 g / 177 g) * 100

Using a calculator, we can find the mass fraction of sulfuric acid in the solution.

The mass fraction of sulfuric acid in the solution is approximately 15.25%.

Please note that the calculation assumes that the volume of the solution remains constant during the addition of sulfuric acid.