單項(xiàng)選擇題

標(biāo)準(zhǔn)氫電極指的是()

A.Pt ∣ H2(PH2 = Pθ)∣OH-(a=1)
B.Pt ∣ H2(PH2=Pθ)∣H+(a=1)
C.Pt ∣ H2(PH2=Pθ)∣H+(a=10-7
D.Pt ∣ H2(PH2=Pθ)∣OH+(a=10-7

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