1) NaCO3(aq) + CuNO3(aq) -> CuCO3(s) + NaNO3(aq) (算是equation嗎- -) Blue ppt is observed
2不懂
CuNO3應該係Cu(NO3)2作者: ken2007 時間: 2/11/2008 12:10 AM NaCO3應該係Na2CO3 Na2CO3(aq) + Cu(NO3)2(aq) -> CuCO3(s) +2 NaNO3(aq)作者: tommy1987123 時間: 4/11/2008 08:23 PM 2. 應該會有白色ppt form左係Cu上面... 因為Cu+Cl2→CuCl2, and CuCl2 was not in (aq) state, so it will appears in ppt. form... 同埋Cu唔係完全burn哂, 所以d CuCl2 只會form係surface到... 仲有可以講埋個copper foil 會有少少燒黑左= =