2 volumes of water are used to absorb 896 volumes of HCl gas under standard conditions, and the density of the solution is 1.15g/ml. What is the concentration of the hydrochloric acid? What is the mass fraction of HCl in the hydrochloric acid?

2 volumes of water are used to absorb 896 volumes of HCl gas under standard conditions, and the density of the solution is 1.15g/ml. What is the concentration of the hydrochloric acid? What is the mass fraction of HCl in the hydrochloric acid?

n(HCl) = 896/22.4 = 40mol
So m (HCl) = 36.5 * 40 = 1460g
Mass of water = 1 * 2000 = 2000g
Solution mass = 1460 + 2000 = 3460g
Solution volume = 3460 / 1.15 = 3008.7ml = 3L
So the concentration of hydrochloric acid is 40 / 3 = 13.3mol/l
Mass fraction of HCl in hydrochloric acid = 1460 / 3460 = 42.2%

A hydrochloric acid solution with a density of 1.1 g / ml was obtained by dissolving 365 L HCl gas in 1 L water?
If this solution is used to prepare 200ml of 2mol / L dilute hydrochloric acid, how many ml is needed?

In VML water, M G sodium hydroxide solid was added. After all the solid was dissolved, the density of the solution was measured to be p g / cm ^ 3
What is the mass concentration of this sodium hydroxide solution
25mp/(m+V) mol/l

c=n/v
=(m/40)/((m+v)/p)
=(mP)/40(m+v) mol\mL
=25mp/(m+v) mol\L
M is the mass, V is the volume of water, which is also equal to the mass of water