應該係d岩石比野腐食咁..
1. carbon dioxide+water → carbonic acid
a) carbonic acid 係咩黎?
b) carbon dioxide+water既過程洗唔洗加heat of sth先變carbonic acid ?
2. calcium carbonate+carbonic acid → calcium hydrogencarbonate
a) calcium carbonate 係咪即係limestone?
b) calcium hydrogencarbonate又係乜黎?
十萬火急,十萬感激!!
更新1:
sorry.. typing mistake is heat o[r] sth!thanks!
