1.能正确表示下列反应的离子方程式为( )
A. | 向NH4HCO3溶液中加过量NaOH溶液并加热:NH4++OH-$\frac{\underline{\;\;△\;\;}}{\;}$NH3↑+H2O | |
B. | Fe3+溶液中滴加过量的氨水:Fe3++3OH-=Fe(OH)3↓ | |
C. | 等体积等物质的量浓度的NaHCO3和Ba(OH)2溶液混合:HCO3-+Ba2++OH-═BaCO3↓+H20 | |
D. | NaHCO3的水解:HCO3-+H2O=CO32-+H3O+ |
20.下列物质分类正确的是( )
0 169502 169510 169516 169520 169526 169528 169532 169538 169540 169546 169552 169556 169558 169562 169568 169570 169576 169580 169582 169586 169588 169592 169594 169596 169597 169598 169600 169601 169602 169604 169606 169610 169612 169616 169618 169622 169628 169630 169636 169640 169642 169646 169652 169658 169660 169666 169670 169672 169678 169682 169688 169696 203614
A. | 非电解质:NH3 | B. | 氧化物:H2C2O4 | ||
C. | 混合物:KAl(SO4)2•12H2O | D. | 强酸:HClO |