Do 190 gramów roztworu soli o stężeniu 5% dosypano 10 gram soli. Oblicz stężenie otrzymanego roztworu.
190g-100%
x-5%
x=190g*5%/100%=9,5g
200g-100%
19,5g-y
y=100%*19,5g/200g=9,75%
Dane:
Cp₁=5%
ms=10g
mr₁=190g
mr₂=190g+10g=200g
Szukane:
Cp₂=?
Cp₂=ms/mr*100%
Cp₂=10g/200g*100%=5%
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190g-100%
x-5%
x=190g*5%/100%=9,5g
200g-100%
19,5g-y
y=100%*19,5g/200g=9,75%
Dane:
Cp₁=5%
ms=10g
mr₁=190g
mr₂=190g+10g=200g
Szukane:
Cp₂=?
Cp₂=ms/mr*100%
Cp₂=10g/200g*100%=5%