57.有0.01M之HC150ml應與多少ml之0.02M NaOH反應,才能使..-阿摩線上測驗
2F lisa860105 高三下 (2020/09/05)
HCl=5*10-4mol 設加入a ml的NaOH=2a*10-5mol [H+]=1000[(nHCl-nNaOH)/(VHCl+VNaOH)] =1000[(5*10-4-2a*10-5)/(50+a)] =10-3 => 5*10-4-2a*10-5=(50+a)*10-6 => 500-20a=50+a => a=450/21=21.4 |