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1、一一. .計(jì)算計(jì)算P5P51.CaCO32HCl1 2534mg10-3100g/molXX =10.6810-3molMg(OH)22HCl1 2180mg10-358g/molyy =6.2110-3molC=nvV=nc=0.169L=169mL=10.6810-3mol+ 6.2110-3mol1mol/L102(1)n=VVm=4.48L22.4L/mol=0.2mol(2)2Cl2Ca(ClO)22 10.2mol xX=0.1molmCa(ClO)2=0.1mol143g/mol=14.3g2Cl2+2Ca(OH)2=CaCl2+Ca(ClO)2+2H2O3.CaCO3+2HCl
2、=CaCl2+CO2+H2O1 1 1X y1.12L22.4L/mol=0.5molX=0.05mol y=0.05mol(1)w(CaCO3) =0.05mol100g/mol8.0g=62.5%100%(2)C(CaCl2)=0.05mol0.05L=1mol/L4.Na2SO4+BaCl2=BaSO4+2NaClNa2CO3+BaCl2=BaCO3+2NaCl1 1x4.66g233g/mol=0.02molX=0.02mol1 1y(14.51-4.66)g197g/mol=0.05moly=0.02mol(1)C(Na2SO4)=0.02mol10010-3L=0.2mol/LC(
3、Na2CO3)=0.05mol10010-3L=0.5mol/L(2)BaCO3+2HNO3=Ba(NO3)2+CO2+H2O1 10.05molzZ=0.05molV=0.05mol22.4L/mol=1.12L5.(1)m(NaOH)=0.20mol/L1L40g/mol=8g(2)Mg2+2OH-=Mg(OH)21 2Mg2+=200mL0.2mol/L100mL2=0.2mol/L(3)MgCl2(熔融)熔融)=電解電解Mg+Cl21 10.2mol/L10010-3LXX=0.02molv(Cl2)=0.02mol22.4L/mol=0.448L6.NaCl+AgNO3=AgCl+N
4、aNO31 1X2.87g143.5g/mol=0.02molX=0.02mol(1)w(NaCl) =0.02mol58.5g/mol5.0g100%=23.4%20%,不符合不符合(2)C(NaCl)=0.02mol5010-3L=0.4mol/L7.(1)2NaHCO3=Na2CO3+CO2+H2O m(減少減少)168 10662x(8.4-6.85)gX=4.2g(2)2NaHCO3=Na2CO3+CO2+H2O2 18.4g84g/molyy=0.05molC(Na2CO3)=0.05mol1L=0.05mol/L差量法解題差量法解題酒精燈酒精燈分液漏斗分液漏斗圓底燒瓶圓底燒瓶長(zhǎng)頸漏斗長(zhǎng)頸漏斗圓圓底底燒燒瓶瓶蒸蒸餾餾燒燒瓶瓶平平底底燒燒瓶瓶可直接加熱可直接加熱不可直接加熱不可直接加熱試管、蒸發(fā)皿、坩堝、燃燒匙試管、蒸發(fā)皿、坩堝、燃燒匙燒杯、燒瓶燒杯、燒瓶