To prepare 1000 ml of 30% sulfuric acid solution (density is 1.22 g / ml), how many ml of concentrated sulfuric acid and water with density of 1.84 g / ml and mass fraction of 98% are needed?

To prepare 1000 ml of 30% sulfuric acid solution (density is 1.22 g / ml), how many ml of concentrated sulfuric acid and water with density of 1.84 g / ml and mass fraction of 98% are needed?

This is the conservation of solute mass, and the solute mass before and after preparation remains unchanged. 1.22x1000x30% = 1.84x98% XV, v = 203.0ml, the volume of water is 1000x1.22-1.84x203.0 = 846.48ml,

To prepare 1000ml of 20% sulfuric acid solution (density is 1.14g/ml), how many ml of sulfuric acid and water with density of 1.84g/ml and concentration of 98% are needed

Let me give you a formula
20% * 1000ml * 1.14g/ml = 98% * 1.84g/ml * V sulfuric acid
V water = 1000ml-v sulfuric acid

It is known that the density of 10% sulfuric acid is 1.07g/ml. How many ml of 98% concentrated sulfuric acid and water are needed to prepare 1000 ml of 10% dilute sulfuric acid solution?
It is known that the density of 10% sulfuric acid is 1.07g/ml and that of 98% sulfuric acid is 1.84g/ml
How many ml of 98% concentrated sulfuric acid and water are needed to prepare 1000 ml of 10% dilute sulfuric acid solution?

During the dilution process, the mass of solute H2SO4 remains unchanged
The density of 10% sulfuric acid is 1.07g/ml, and the preparation of 98% sulfuric acid is 1000ml
Solution mass = solution volume * density = 1000 * 1.07 = 1070g
Solute mass = 1070 * 10% = 107g
Water mass = 1070-107 = 963g
The density of 98% sulfuric acid is 1.84g/ml, and the volume is XML
Solution mass = 18.4xg solute mass = 1.84x * 98%
Water mass = 18.4x-1.84x * 98%
According to solute equivalence: 107 = 1.84x * 98% x = 59.3ml
Mass of H2O to be added = 963 - (1.84x-1.84x * 98%) = 960.82g