1)Oblicz stosunek masowy i skład procentowy H2SO4.
2) 50g kwasu H2SO4 ropzpuszczono w 200g H2O.
Oblicz stężenie procentowe roztworu.
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mH₂SO₄=2*1u+32u+4*16u=98u
mH : mS : mO = 2 : 32 : 64
mH : mS : mO = 1 : 16 : 32
%H = (2/98)*100% = 2%
%S = (32/98)*100% = 32,7%
%O = (64/98)*100% = 65,3%
2)
ms=50g
mw=200g
mr=ms+mw
mr=50g+200g=250g
Cp=ms*100%/mr
Cp=50*100/250
Cp = 20%