m(H2C2O4)р-ра =200*1,1=220г;
W(H2C2O4)в H2C2O4*2H2O=90:126=0,7;
m(H2C2O4) = 0,68*0,7=0,476г;
Mэ(H2C2O4)=90 :2=45г/моль;
Cн=0,476 :45=0,011г/моль;
T=0,476 : 200=0,00238г/мл;
W=0,476 : 220=0,002(0,2%).
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