Odpowiedź:
[tex]CaO + 2HCl --- > CaCl2 + H20\\nCaO : nHCl = 1:2\\MCaO=56,08 \frac{g}{mol}\\nCaO=\frac{1}{56,08}=0,018mola\\nHCl calkowita=0,25*0,2=0,05mola\\nHCl zuzyta w reakcji=0,018*2=0,036mola\\nHCl nadmiar=0,05-0,036=0,014mola\\nH+=0,014mola\\nH+=nOH-\\nBa(OH)2 do uzycia=\frac{1}{2}* nOH-=0,007mola\\VBa(OH)2=\frac{0,007}{0,1}=0,07dm3=70cm3[/tex]
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Odpowiedź:
[tex]CaO + 2HCl --- > CaCl2 + H20\\nCaO : nHCl = 1:2\\MCaO=56,08 \frac{g}{mol}\\nCaO=\frac{1}{56,08}=0,018mola\\nHCl calkowita=0,25*0,2=0,05mola\\nHCl zuzyta w reakcji=0,018*2=0,036mola\\nHCl nadmiar=0,05-0,036=0,014mola\\nH+=0,014mola\\nH+=nOH-\\nBa(OH)2 do uzycia=\frac{1}{2}* nOH-=0,007mola\\VBa(OH)2=\frac{0,007}{0,1}=0,07dm3=70cm3[/tex]