• 2022-10-30
    配制pH≈7的缓冲溶液,应选择()
    A: Kθ(HAc)=1.8×10-5
    B: Kθ(HCOOH)=1.77×10-4
    C: Kθ(H2CO3)=4.3×10-7
    D: Kθ(H2PO4-1)=6.23×10-8