F.3 Chemistry Question

a)
CaCO3 = CaO + CO2
calcium carbonate (heat)= calcaium oxide + carbon dioxide
碳酸鈣　＝　氧化鈣　＋　二氧化碳

b)
2HCl + CaCO3 = CaCl2 + CO2 + H2O
calcium carbonate + hydrochloric acid = calcium chloride + carbon dioxide + water
碳酸鈣　＋ 氫氯酸 = 氯化鈣 + 二氧化碳 + 水

c)
H2O + CaO = Ca(OH)2
water + calcium oxide = calcium hydroxide
水 + 氧化鈣 = 氫氧化鈣

d)
CO2 + Ca(OH)2 = CaCO3 + H2O
carbon dioxide + lime water = calcium carbonate + water
二氧化碳 +石灰水　＝　碳酸鈣　＋水


(p.s. lime water and calcium hydroxide is the same thing but lime water is the solution of calcium hydroxide 石灰水同氫氧化鈣是同一樣物質,但石灰是是氫氧化鈣的水溶液)

2007-04-01 12:48:20 補充：
注:碳酸鈣又叫石灰or石灰石calcium carbonate also called lime stone氧化鈣又叫生石灰氫氧化鈣又叫熟石灰氫氧化鈣 溶入水後的溶液 叫石灰水d) is also called lime water test, if CO2 is pump into lime water, lime water will turn milky because of white solid calcium carbonate present.

word equation
(a)calcium carbonate→(strong heat)calcium oxide+carbon dioxide
(b)calcium carbonate+hydrochloric acid→calcium chloride+water
(c)calcium oxide+water→calcium hydroxide(slaked lime)+heat
(d)calcium hydroxide(lime water)+carbon dioxide→calcium carbonate(white solid)+water

hope it can help=)