百度试题 结果1 题目NaCrO2 + Br2 + NaOH → Na2CrO4 + NaBr 相关知识点: 试题来源: 解析 2NaCrO2 + 3Br2 + 8NaOH = 2Na2CrO4 + 6 NaBr+4H2O 反馈 收藏
Two moles of Sodium Chromite [NaCrO2], three moles of Dibromine [Br2] and six moles of Sodium Hydroxide [NaOH] react to form one mole of Sodium Dichromate [Na2Cr2O7], six moles of Sodium Bromide [NaBr] and three moles of Water [H2O] Reactants Sodium Chromite - NaCr...
2 + NaOH → Na2CrO4 + H2O + NaBr 复合系数摩尔质量摩尔(克/摩尔)重量(克) 反应物 亚铬酸钠 溴分子 氢氧化钠 NaCrO2 2 106.98466928 Br2 3 159.808 NaOH 8 39.99710928 产品 铬酸钠 水 溴化钠 Na2CrO4 2 161.97323856 H2O 4 18.01528 NaBr 6 102.89376928 ...
用离子—电子法配平下列反应1.KMnO4 + K2SO3 + KOH —— K2MnO4 + K2SO42.(NH4)2S2O8 + FeSO4 —— Fe2(SO4)3 +(NH4)2SO43.KMnO4 +PbSO4 —— PbO2 + MnSO4 + H2SO4(稀)4.NaCrO2 +Br2 + NaOH ——Na2CrO4 + NaBr5.Cr3+ + S —— Cr2O72- +H2S
1.KMnO4 + K2SO3 + KOH —— K2MnO4 + K2SO42.(NH4)2S2O8 + FeSO4 —— Fe2(SO4)3 +(NH4)2SO43.KMnO4 +PbSO4 —— PbO2 + MnSO4 + H2SO4(稀)4.NaCrO2 +Br2 + NaOH ——Na2CrO4 + NaBr5.Cr3+ + S —— Cr2O72- +H2S
1.2KMnO4+K2SO3+2KOH===2K2MnO4+K2SO4+H2O 2.(NH4)2S2O8+2FeSO4===Fe2(SO4)3+(NH4)2SO4 3.2KMnO4+5PbSO4+2H2O===5PbO2 +2MnSO4 +2H2SO4(稀)+K2SO4 4.2NaCrO2+3Br2+8NaOH===2Na2CrO4+6NaBr+4H2O 5.2Cr3+8OH-+3S===Cr2O72-+3H2S+H2O 解析看不懂?免费查看同类题视频解析查看解答 ...
2 NaCrO2 + Br2 + 4 NaOH = 2 Na2CrO4 + 2 NaBr + 2 H2 ReactantsProducts Na 6 6 ✔️ Cr 2 2 ✔️ O 8 8 ✔️ Br 2 2 ✔️ H 4 4 ✔️ Since there is an equal number of each element in the reactants and products of 2NaCrO2 + ...