soft drinks入面既gas

2007-11-05 2:25 am
What gas is present in soft drinks??
thz....thz...

回答 (3)

2007-11-05 6:37 pm
✔ 最佳答案
soft drink 係將 CO2 dissolve 落水,
形成carbonic acid, H2CO3,
當中都有部分仍然係CO2 molecule.
由於有種acid present, 所以其實汽水有低pH,
再加上汽水既糖分, 所以我地話飲多會壞牙,
就係因為 酸會侵蝕牙上面既琺瑯質.

當我地飲汽水, 會即刻有好多泡泡浮出黎.
但係明明未飲既時侯見唔到咁多架wor ?

原因係因為我地既熱力(飲落個口,個口暖架嘛)令杯汽水溫度上升,
temperature increases, solubilily of gas decrease.
杯水再溶唔到咁多CO2, 就會有好多CO2走晒出黎,
就係汽水果d gas喇.

所以汽水放入雪櫃, d汽冇咁易走晒,
都係因為令CO2 dissolve得好d.


有咩唔明再問:]
希望幫到您.
2007-11-05 4:15 am
The gas present in soft drinks is carbon dioxide (CO2).
2007-11-05 2:30 am
carbon dioxide...
即係二氧化碳....
人體呼出黎既氣體之一!!
參考: me


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