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-ra=kca^2;
dca/dt=-kca^2;
dca=-k(ca^2)*dt;
###Euler's first step ca0=2mol/l
when dt=0.1min
dca=-0.1*(2^2)*0.1=-0.04
ca1=ca0+dca=2-0.04=1.96
###Euler's second step ca1=1.96mol/l
when dt=0.1min
dca=-0.1*(1.96^2)*0.1=-0.038416
ca2=ca1+dca=1.96-0.038416=1.8816
###Euler's second step ca2=1.8816mol/l
when dt=0.1min
dca=-0.1*(1.8816^2)*0.1=-0.0354
ca3=ca2+dca=1.8816-0.0354=1.6588
2Â¥2017-07-11 01:53:00
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