ionic equation

Lead(II) Nitrate(s) react with Potassium Chloride(aq) from out Lead(II) Chloride(aq) and Potassium Nitrate(aq)
ionic equation:
Pb(2+)(s or aq) + 2K(+)(aq) -> Pb (2+)(s) + 2K(+)(aq)
ionic equation 只要dum o左唔要ge 冇變ge ions(e.g. nitrate 同 chloride)
加正負 平衡兩邊便ok
but 呢題好狗...
味變ge Lead(II) Nitrate 溶唔溶係水都ok so 佢係s or aq
但係Lead(II) Chloride 唔可以溶係水 一定係s
仲有條chemical equation 冇咩特質 令ionic equation 冇咩變
&條chemical equation 錯o左........
Pb(NO3)2 + 2KCl --> PbCl2 + KNO3 - KNO3 應該係2KNO3
你條equation 唔平衡...

Pb(NO3)2 + 2KCl --> PbCl2 + 2KNO3
左手面有1個Pb, 2個NO3, 2個K同2個Cl
右手面有1個pb 2個cl 1個k 1個no3
所以右手面要加個2晌kno3前面, 咁就會有2個k 同埋2個no3
咁條equation就balanced喇~~~~