[請益] 理化問題
題目： 2K2CrO4+H2SO4→K2Cr2O7+H2O+K2SO4
若處於平衡狀態中，下列何者錯誤？
a K2CrO4的濃度不再改變
b K2CrO4在鹼中較安定
c 若加入酸性物質，正反應速率大於逆反應速率
d K2Cr2O7的莫耳數和K2CrO4的莫耳數比一直都是1:2
答案為d
abc皆沒問題
d的話 莫耳數比=係數比 這樣1:2為什麼不對呢？
謝謝！
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