What is the relative atomic mass of dilute sulfuric acid?

In real life, sulfuric acid is a common chemical liquid for many people. Sulfuric acid contains strong acidity and can be corrosive. Human skin contact with sulfuric acid can cause great harm to health. The relative atomic mass of dilute sulfuric acid is a chemical aqueous solution. Under normal circumstances, the relative atomic mass of dilute sulfuric acid is about 75-70.

What is the relative atomic mass of dilute sulfuric acid?

Sulfuric acid (chemical formula: H2SO4), the most important oxygen-containing acid of sulfur. Anhydrous sulfuric acid is a colorless oily liquid that crystallizes at 10.36°C. Its aqueous solutions of various concentrations are usually used and are prepared by the tower method and the contact method. The former produces crude dilute sulfuric acid with a mass fraction of generally around 75%; the latter produces pure concentrated sulfuric acid with a mass fraction of 98.3%, a boiling point of 338°C, and a relative density of 1.84.

Chemical properties

Since the sulfuric acid molecules (H2SO4) in dilute sulfuric acid have been completely ionized, dilute sulfuric acid does not have the special chemical properties of concentrated sulfuric acid and pure sulfuric acid, such as oxidizing, dehydrating, and highly corrosive.

effect

Dilute sulfuric acid turns purple litmus red. This is because dilute sulfuric acid is acidic and acids can change the color of litmus, while colorless phenolphthalein remains unchanged.

It is also useful for removing rust due to its corrosive properties.

dilution

Concentrated sulfuric acid should be poured into water with a glass rod, or poured slowly along the inner wall of the container, and stirred constantly to release the heat generated by the chemical reaction. If the heat is severe, cool it with cold or ice water, and then dilute it to the required proportion or volume. (The reason why you can't pour water into concentrated sulfuric acid: the density of water is smaller than that of concentrated sulfuric acid, so water will float on the surface of concentrated sulfuric acid. Since concentrated sulfuric acid releases a lot of heat when dissolved in water, the water will immediately boil and droplets will splash around. In order to prevent accidents, concentrated sulfuric acid must be poured into water instead of water into concentrated sulfuric acid.)

application

Product application: Used in the production of chemical fertilizers, and also widely used in chemical, pharmaceutical, plastic, dye, petroleum refining and other industries.

React with salt

H2SO4 + BaCl2 = BaSO4↓ + 2HCl

Na2CO3 + H2SO4 = Na2SO4 + H2O + CO2↑

When dilute sulfuric acid is added to barium chloride solution, a white precipitate forms. When dilute hydrochloric acid is added, the white precipitate does not disappear.

H2SO4+BaCl2=BaSO4↓+2HCl

Description: BaSO4 is a white solid, insoluble in water and acid. The sulfate ions in the solution can be tested by forming BaSO4 precipitate. First add excess dilute hydrochloric acid to acidify the solution to eliminate interference, then add BaCl2 solution