(4)第1步反应为CaC2O4•xH2O失去结晶水生成CaC2O4,第2步反应为CaC2O4分解生成CaCO3与碳的氧化物,第3步,继续加热固体,碳酸钙分解生成氧化钙和二氧化碳. 试题解析:(1)高锰酸钾具有强氧化性,在酸性环境下,能将草酸氧化为二氧化碳,同时自身被还原为锰离子,根据得失电子数相等配平方程式,即:5C2O42-+2MnO...
测KH3(C2O4)2•2H2O(分子量254.2)含量,草酸钙沉淀法;沉淀形CaC2O4•H2O;称量形CaO(分子量56.08)样品重0.5172g,CaO重0.2265g,含量应为×% A. 99.24 B. 99.10 C. 98.35 D. 99.50 E. 99.38 相关知识点: 试题来源: 解析 A 反馈 收藏
With the use of a new computer program and following the PBC periodic bond chain concept, the morphology of triciinic potassium trihydrogen dioxalate dihydrate, KH3(C2O4)2 路 2H2O (also termed potassium tetroxalate, KTO) has been deduced from its crystal structure. Several values of the ...
Finally, add together the total mass of each element to get the molar mass of KH3(C2O4)2.2H2O: 39.0983 g/mol + 5.0397 g/mol + 52.84708 g/mol + 156.79412 g/mol =253.7792 g/mol 5. Find Mole Fraction To find the mole fraction and percentage of each element in KH3(C2O4)2.2H2O, ...
KH3(C2O4)2.2H2O 元素 质量百分比氧156.794g氧156.794g碳52.8471g碳52.8471g鉀39.0983g鉀39.0983g氫5.0397g氫5.0397gKH3(C2O4)2.2H2O 原子#氧9.8氧9.8氫5氫5碳4.4碳4.4鉀1鉀1 🛠️ 计算摩尔质量 指令 这个程序决定一种物质的分子量。输入物质的分子式,它将计算出元素的组合物和质量的化合物中的每个元素...
测KH3(C2O4)2.2H2O(分子量254.2)含量,草酸钙沉淀法;沉淀形CaC2O4.H2O;称量形CaO(分子量56.08)样品重0.5172g,CaO重0.2265g,含量应为×%. A. 99.24 B. 99.1 C. 98.35 D. 99.5 E. 99.38 相关知识点: 试题来源: 解析 正确答案:A 涉及知识点:综合复习题 ...
测KH3(C2O4)2.2H2O(分子量254.2)含量,草酸钙沉淀法;沉淀形CaC2O4.H2O;称量形(分子量56.08)样品重0.5172g,重0.2265g,含量应为×%.A.99.24B.99.1C.98.35D.99.5E.99.38的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习
测KH3(C2O4)2·2H2O(分子量254.2)含量,草醛钙沉淀法;沉淀形成CaC2O4·H2O;称量形成(分子量56.08)样品重 0.517 2g,重0.226 5g,含量应为A.99.24%B.99.10%C.98.35%D.99.50%E.99.38%的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答
With the use of a new computer program and following the PBC periodic bond chain concept, the morphology of triciinic potassium trihydrogen dioxalate dihydrate, KH3(C2O4)2 · 2H2O (also termed potassium tetroxalate, KTO) has been deduced from its crystal structure. Several values of the pa...
草酸三氢钾[KH3(C2O4)2]是一种白色粉末,可溶于水。主要用于除去铁锈、墨水迹等。查阅资料得知,加热时草酸三氢钾会分解,固体产物为碳酸钾。某化学兴趣小组为了探究除碳酸钾以外的其他分解产物,设计了如图所示实验装置(图中夹持装置已省略)。分解产物DABCEFGH已知:A、C、F中盛有澄清石灰水, B中盛有浓NaOH溶液...