問題詳情
33.有關鉛蓄電池放電時之各項敘述，何者正確？（Pb＝207，S＝32）
(A)負極為鉛，正極為二氧化鉛
(B)陽極反應：PbSO4(s)＋2 e－→ Pb(s)＋SO42－(aq)
(C)陰極反應：PbO2(s)＋4 H＋(aq)＋SO42－(aq)＋2 e－→ PbSO4(s)＋2 H2O(e)
(D)硫酸濃度會降低，電壓也隨之減小
(E)供應10法拉第直流電時，電解液重量約減少800 g
(A)負極為鉛，正極為二氧化鉛
(B)陽極反應：PbSO4(s)＋2 e－→ Pb(s)＋SO42－(aq)
(C)陰極反應：PbO2(s)＋4 H＋(aq)＋SO42－(aq)＋2 e－→ PbSO4(s)＋2 H2O(e)
(D)硫酸濃度會降低，電壓也隨之減小
(E)供應10法拉第直流電時，電解液重量約減少800 g
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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