A.都是晶体,都溶于水 | B.都带有氨的刺激性气味 |
C.加热后都有氨气放出 | D.与强碱混合加热都有氨气放出 |
A.NF3呈三角锥形,是非极性分子 | B.NF3中N是+3价 |
C.NF3的氧化性比F2强 | D.NF3的还原性比NH3强 |
A.只有③ | B.只有② | C.只有②③ | D.①②③④ |
A.H2SO4 | B.NaOH | C.NH4Cl | D.NaNO3 |
A.80% | B.85% | C.90% | D.95% |
A.12% | B.22% | C.33.3% | D.66.7% |
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