判斷下列反應(yīng)式是否正確: I2+2Na2S2O3→2NaI+Na2S4O6
判斷下列反應(yīng)式是否正確: 3I2+5KCl+3H2O→HIO3+5KI+5HCl
判斷下列反應(yīng)式是否正確: RBr+NaI→RI+NaBr