Dilute concentrated sulfuric acid with 18.4 mol / L concentration and 18.4 g / cm * 3 density to 1 000 ml, 2 mol / L concentration and 1.2 g / cm * 3 density Dilute 18.4 mol / L concentrated sulfuric acid with density of 18.4 g / cm * 3 to 1000 ml, 2 mol / L concentrated sulfuric acid with density of 1.2 g / cm ^ 3. Calculate: 1. Volume of concentrated sulfuric acid required; 2. Volume of water required

Dilute concentrated sulfuric acid with 18.4 mol / L concentration and 18.4 g / cm * 3 density to 1 000 ml, 2 mol / L concentration and 1.2 g / cm * 3 density Dilute 18.4 mol / L concentrated sulfuric acid with density of 18.4 g / cm * 3 to 1000 ml, 2 mol / L concentrated sulfuric acid with density of 1.2 g / cm ^ 3. Calculate: 1. Volume of concentrated sulfuric acid required; 2. Volume of water required

After dilution, the mass of H2SO4 is 1.2 * 98 = 196 G
Let the volume of H2SO4 be V ml
be
V*1.84*98% =196
V=108.7 ml
1. The volume of concentrated sulfuric acid required is 108.7 ml
two
The mass of water required is: 1000 * 1.20 - 108.7 * 1.84 = 1000 g
The volume is 1000 ml

Dilute a certain volume of concentrated sulfuric acid with density of 1.84 g / cm ^ 3, mass fraction of solute of 98% to 1000 ml, C = 2 mol / L, P = 1.20 g / cm ^ 3
Dilute a certain volume of concentrated sulfuric acid with density of 1.84g/cm ^ 3, mass fraction of solute of 98% to 1000ml, C = 2mol / L, P = 1.20g/cm ^ 3. Calculate the volume of concentrated sulfuric acid needed
【2】 Volume of water required

This is the concentration of concentrated sulfuric acid
1000×1.84×98%/98=18.4mol/L
According to c1v1 = c2v2
The volume of concentrated sulfuric acid needed is V1 = c2v2 / C1 = 2 × 1000 / 18.4 = 108.7ml
Volume of water required (1000 × 1.2-108.7 × 1.84) / 1 = 1000ml

Dilute the concentrated sulfuric acid with a mass fraction of 98% and a density of 1.84 g / ml of 250 ml sulfuric acid to 600 ml, and the density of the solution is 1.35 g / ml
When the concentration of sulfuric acid in 250 ml is 98% and the density is 1.84 g / ml, dilute it to 600 ml, and the density of the solution is 1.35 g / ml?

The quantity and concentration of substance is the quantity of solute divided by the total volume of solution. The total volume of diluted solution has been said to be 600 ml, and the quantity of solute remains unchanged during dilution. Therefore, the quantity of sulfuric acid substance is 250 ml × 1.84 g / ml × 98% △ 98 g / Mo = 4.6 mol, and the quantity and concentration of substance is 4.6 mol △ 600 ml × 1000 = 7.67 mol / L