Jak najszybciej na dziś.
Oblicz stęzenie procentowe roztworu siarczanu otrzymanego po rozpuszczeniu 500g CuSO₄*SH₂O w 500g wody.
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mCuSO₄·5H₂O=64u+32u+4·16u+5*18u=250u
mCuSO₄=160u
250g hydratu ------- 160g soli
500g hydratu ------- xg soli
x = 320g soli
ms=320g
mr=500g+500g=1000g
Cp=ms*100%/mr
Cp=320*100/1000
Cp = 32%