摘要：19．根据下列反应.判断氧化性强弱正确的是 (1)2H2S+O2===2S↓+2H2O (2)4NaI+O2+2H2O===4NaOH+2I2(3)Na2S+I2===2NaI+S↓ (A)O2＞I2＞S (B)O2＞S＞I2 (C)I2＞O2＞S (D)S＞I2＞O2
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根据下列反应，判断氧化性强弱正确的是（ ）
①2H2S+O2=2S+2H2O ②Na2S+I2=2NaI+S ③4NaI+O2+2H2O=2NaOH+2I2．
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①2H2S+O2=2S+2H2O ②Na2S+I2=2NaI+S ③4NaI+O2+2H2O=2NaOH+2I2．
| A．O2＞I2＞S | B．O2＞S＞I2 | C．I2＞O2＞S | D．S＞I2＞O2 |
根据下列反应，判断氧化性强弱正确的是（ ）
①2H2S+O2=2S+2H2O ②Na2S+I2=2NaI+S ③4NaI+O2+2H2O=2NaOH+2I2．
A．O2＞I2＞S
B．O2＞S＞I2
C．I2＞O2＞S
D．S＞I2＞O2
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①2H2S+O2=2S+2H2O ②Na2S+I2=2NaI+S ③4NaI+O2+2H2O=2NaOH+2I2．
A．O2＞I2＞S
B．O2＞S＞I2
C．I2＞O2＞S
D．S＞I2＞O2
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根据下列反应，判断氧化性强弱正确的是 ①2H2S＋O2＝2S＋2H2O ②Na2S＋I2＝2NaI＋S ③4NaI＋O2＋2H2O＝2NaOH＋2I2 | |
| [ ] | |
A． |
O2＞I2＞S |
B． |
O2＞S＞I2 |
C． |
I2＞O2＞S |
D． |
S＞I2＞O2 |