To make 2.00 l of 2.00 m HCl solution by dilution with water, the volume of 10.0 m HCl needed is 0.4 l.
Dilution is defined as the process in which the concentration of a sample is decreased by adding more solvent. The dilution formula is given below.
C₁V₁ = C₂V₂
where C₁ = initial concentration of sample = 10.0 m
V₁ = initial volume of sample
C₂ = final concentration after dilution = 2.00 m
V₂ = total final volume after dilution = 2.00 l
Plug in the values to the formula and solve for the volume of the solution needed.
V₁ = C₂V₂/C₁
V₁ = (2.00 m)(2.00 l)/(10.0 m)
V₁ = 0.4 l
Learn more about dilution here: brainly.com/question/1615979
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