9%电离,即D_=1-99%=0.0111633=−12)10ln(TT−=3.2lnT23116即:T−=3.2lnT217-3将ND=10cm,D_=0.01代入得:11633=10ln42TT−=10ln4lnT23116即:T−=2.9lnT2(2)90%时,D_=0.1−314ΔED1.D=10cm=ln0Tk2ND116××1021.015310143=lnT2=lnT2T2NDND3116即:=lnTT217-33116ND=10cm得:T−=10ln3lnT23116即:T−=9.6ln;T2(3)50%电离不能再用上式N答案网∵nn+==DDD2:D=D1−EE−EE1+exp(FDexp(21)−+FD)20Tk0Tk−EE−EE∴exp(FDexp(4)−=FD)0Tk0Tk−EE−EEFD4ln−=FD0Tk0Tk即:DF−=0TkEE2ln答案网()−exp(−=)=0Tk2取对数后得:−+TkEE2lnN−DC0=lnD0Tk2Nc整理得下式:ΔENΔEN−D=−ln2lnD∴−D=lnD0Tk2Nc0TkNcΔENc即:D=ln0TkND14-3当ND=10cm时,311610215××T233=ln=2)20ln(TT+=20lnlnT101423116得T+=3lnT217-33116当ND=10cm时T−=9.3lnT2此对数方程可用图解法或迭代法解出。迭代法:143以99%电离为例取ND=10cm,得:1163=−lnT2.3T2116解出:,T=,列下表:3ln答案网T−2.320(K)lnTnTn+13005.7118.518.52.9232.632.63.4839.639.63.6835.035.03.6636.336.33.5937.337.33.627.137.13.6537.1∴,T=37.1(K),对其他情况可能类似处理。
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