1.Jakie są końcowe stężenie roztworu, jeżeli do 40g 10-procentowego roztworu dolano 5g rozpuszczalnika?
mr = 40g
cp = 10%
ms = mr x cp/100% = 40g x 10%/100% = 4g
mr₂ = 40g + 5g = 45g
ms = 4g
cp = ms/mr x 100%
cp = 4g/45g x 100% ≈ 8,89%
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Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)
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mr = 40g
cp = 10%
ms = mr x cp/100% = 40g x 10%/100% = 4g
mr₂ = 40g + 5g = 45g
ms = 4g
cp = ms/mr x 100%
cp = 4g/45g x 100% ≈ 8,89%
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)