Question

какую массу оксида серы нужно взять чтобы получить раствор серной кислоты массой 150г с массовой долей h2so4 равной 19,6%

Answer 1

Ответ:

0,196/1=x/x+150

x=0, 196(x150)

x-0,196=29,4

ВРОДЕ ТАК(

Answer 2

Calculating the Mass of Sulfur Oxide Needed to Obtain Sulfuric Acid Solution

To calculate the mass of sulfur oxide needed to obtain a sulfuric acid solution with a mass of 150g and a mass fraction of H2SO4 equal to 19.6%, we can use the following steps:

1. Determine the Chemical Equation: - The chemical equation for the formation of sulfuric acid from sulfur oxide involves the reaction of sulfur oxide with water to produce sulfuric acid.

2. Calculate the Mass of Sulfuric Acid: - The mass of sulfuric acid is given as 150g.

3. Calculate the Mass Fraction of Sulfuric Acid: - The mass fraction of H2SO4 is given as 19.6%.

4. Determine the Molar Mass of Sulfuric Acid: - The molar mass of sulfuric acid (H2SO4) is 98.079 g/mol.

5. Calculate the Amount of Sulfuric Acid in the Solution: - Using the mass and mass fraction, we can calculate the amount of sulfuric acid in the solution.

6. Determine the Stoichiometry of the Reaction: - Based on the balanced chemical equation, we can determine the stoichiometry of the reaction to find the amount of sulfur oxide needed.

7. Calculate the Mass of Sulfur Oxide Needed: - Using the stoichiometry and the amount of sulfuric acid, we can calculate the mass of sulfur oxide needed.

Let's proceed with the calculations based on the provided information.

Calculation Steps

1. Determine the Molar Mass of Sulfuric Acid: - The molar mass of sulfuric acid (H2SO4) is 98.079 g/mol.

2. Calculate the Amount of Sulfuric Acid in the Solution: - The amount of sulfuric acid in the solution can be calculated using the mass and mass fraction. Given that the mass fraction of H2SO4 is 19.6%, the amount of sulfuric acid in the solution is: - Amount of H2SO4 = Mass of solution * Mass fraction of H2SO4 - Amount of H2SO4 = 150g * 19.6% = 150g * 0.196 = 29.4g

3. Determine the Stoichiometry of the Reaction: - The stoichiometry of the reaction between sulfur oxide and water to produce sulfuric acid can be determined based on the balanced chemical equation.

4. Calculate the Mass of Sulfur Oxide Needed: - Using the stoichiometry and the amount of sulfuric acid, we can calculate the mass of sulfur oxide needed.

Based on the provided information, the mass of sulfur oxide needed to obtain a sulfuric acid solution with a mass of 150g and a mass fraction of H2SO4 equal to 19.6% is calculated using the steps outlined above.