Re: [請益] 化學平衡
個人淺見...
何謂反應平衡?
就是正反應速率 = 逆反應速率
講反應平衡
當然就是看反應速率
而不是看濃度、莫耳數
+ -
H O → H + OH
2 ←
首先
水蒸發只會讓水分子減少
氫離子與氫氧根離子不會變
水分子比較少會讓平衡向左移動
也就是逆反應會變快
所以平衡改變了
但是國中試題通常沒有想這麼多
就當作不變
所以題目相當有爭議...
這跟倒掉半杯又不一樣了
倒掉半杯的話
水分子、氫離子與氫氧根離子
會一起減半
所以正逆反應速率不變
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