小明自行配製糖水,將糖粉持續加入10毫升的水中,並充分的攪拌,直到糖水達到飽和為止,當糖水達到飽和時,關於水溶液中糖的狀態敘述,下列何者正確?

國二下理化Chap4-2 可逆反應與平衡 2025 0217

Quiz
•
Chemistry
•
8th Grade
•
Hard
Sone Wang
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
糖的溶解和沉澱皆停止
糖的溶解速度小於沉澱速度
糖的溶解速度大於沉澱速度
糖的溶解速度等於沉澱速度
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
在一加蓋的廣口瓶中置入少許的水。若將水的蒸發稱為正反應,則該系統內的逆反應為何?
水蒸氣的凝結
水的溶固
氧氣的溶解
水蒸氣的凝華
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
小郁配製飽和糖水一杯,配製完後發現杯底仍有未溶解的糖存在。請問關於此一系統的敘述,何者是正確的?
該系統尚未達到平衡狀態
該系統中的溶質溶解速度等於溶質的沉澱速度
該系統在達到平衡之後,無論系統條件如何改變,都無法破壞其平衡狀態
沉澱在底部的溶質,可隨著時間的增加而會變得更多。
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列各項反應,何者有機會達到平衡?
將稀鹽酸倒入未加蓋的廣口瓶中,廣口瓶內放置鎂帶
燃燒蠟燭
將冰塊放置在瓶中並密封
用酒精燈加熱未加蓋燒杯中的水
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
當化學反應達到平衡後,下列關於正反應與逆反應的敘述,何者正確?
正反應會停止
逆反應會停止
正、逆反應均會停止
正、逆反應仍持續進行。
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列有關可逆反應達平衡狀態時的敘述,何者正確?
反應物不再轉變成生成物
反應速率為零
反應物濃度等於生成物濃度
正、逆反應速率相等。
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
H₂O(l)⇌H₂O(g)達到平衡時,代表意義為何?
水蒸發的速率大於水蒸氣凝結速率
水蒸發的速率小於水蒸氣凝結的速率
水蒸發與水蒸氣凝結的速率無關
水蒸發的速率等於水蒸氣凝結的速率。
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