單項選擇題
A.-2 B.-1 C.+1 D.0
A.-2B.-1C.+1D.+2
A.5g/L的鹽水 B.9g/L的鹽水 C.10g/L的鹽水 D.15g/L的鹽水
A.H+;Ac- B.HAcH+;Ac- C.HAcH2OH+;Ac- D.HAcH2OH+;Ac-OH-
A.物質(zhì)的量濃度 B.質(zhì)量濃度 C.質(zhì)量分?jǐn)?shù) D.體積分?jǐn)?shù)
A.mNaOH=5g B.mNaOH=5mg C.mNaOH=5kg D.nNaOH=5mol
A.mB B.ρB C.ωB D.φB
A.Cl B.Br C.I D.F