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原电池电池反应式的书写方法如下： **一、“三”步完成电极反应式的书写（以“甲醇--氧气--KOH溶液”为例）** 1. **得失电子守恒** - 确定负极和正极反应物质的得失电子数。如负极的甲醇在碱性环境中变成\(CO_3^{2 - }\)失去6个电子，写成\(- 6e^-\);正极的\(O_2\)得到4个电子，写成\( + 4e^-\)。 - 负极反应：\(CH_3OH - 6e^-\to CO_3^{2 - }\);正极反应：\(O_2+4e^-\to\)。 2. **电荷守恒** - 调整电极反应式两边电荷数使其相等。对于负极反应，左边电荷数为\(+6\)，右边电荷数为\(-2\)，为使电荷守恒，在左边配8个\(OH^-\);对于正极反应，左边电荷数为\(-4\)，右边电荷数为0，在右边配4个\(OH^-\)。 - 负极反应：\(CH_3OH - 6e^-+8OH^-\to CO_3^{2 - }\);正极反应：\(O_2 + 4e^-\to4OH^-\)。 3. **原子守恒** - 观察电极反应式两边原子个数，使其相等。负极反应中\(C\)守恒，但\(H\)、\(O\)不守恒，需在右边配6个\(H_2O\);正极反应\(H\)、\(O\)不守恒，需在左边配2个\(H_2O\)。 - 负极反应：\(CH_3OH - 6e^-+8OH^- = CO_3^{2 - }+6H_2O\);正极反应：\(O_2+4e^- + 2H_2O=4OH^-\)。 - 注意：若为酸性介质，先补\(H^+\)，另一边补\(H_2O\);若为碱性介质，先补\(OH^-\)，另一边补\(H_2O\);有机物中化合价处理方法为“氧\(-2\)，氢\(+1\)，最后算碳化合价”，并且要注意溶液环境与产物之间的反应，碱性环境下，\(C\)元素最终产物应为\(CO_3^{2 - }\);水溶液中不能出现\(O_2^-\);碱性溶液反应物、生成物中均无\(H^+\);酸性溶液反应物、生成物中均无\(OH^-\)，中性溶液反应物中无\(H^+\)和\(OH^-\)。 **二、“加减法”书写电极反应式一般步骤** 1. **确定原电池的正负极，列出正负极上的反应物质，并标出相同数目电子的得失** - 先写出原电池的总反应，例如\(2Fe^{3 + }+Cu = 2Fe^{2 + }+Cu^{2 + }\)。 - 把总反应按氧化反应和还原反应拆分为两个半反应，注明正、负极，并依据质量守恒、电荷守恒及电子得失守恒配平两个半反应。如正极：\(2Fe^{3 + }+2e^- = 2Fe^{2 + }\);负极：\(Cu - 2e^-=Cu^{2 + }\)。 - 注意负极反应生成的阳离子与电解质溶液中的阴离子是否共存。若不共存，则电解质溶液中的阴离子应写入负极反应式中。 2. **利用加减法得到电极反应式** - 若能写出已知电池的总反应的离子方程式，可以减去较易写出的电极反应式，从而得到较难写出的电极反应式（复杂电极反应式 = 总反应式 - 简单的电极反应式）。例如，已知总反应\(Li + LiMn_2O_4=Li_2Mn_2O_4\)，先写出容易的负极反应\(Li - e^- = Li^+\)，然后用总反应式减去负极反应式得到正极反应式\(LiMn_2O_4+Li^++e^- = Li_2Mn_2O_4\)。 **三、拆分法** 1. **写出原电池的总反应**，例如\(2Fe^{3 + }+Cu = 2Fe^{2 + }+Cu^{2 + }\)。 2. **把总反应按氧化反应和还原反应拆分为两个半反应，注明正、负极，并依据质量守恒、电荷守恒及电子得失守恒配平两个半反应**。 - 正极：\(2Fe^{3 + }+2e^- = 2Fe^{2 + }\)。 - 负极：\(Cu - 2e^- = Cu^{2 + }\)。 - 同样要注意负极反应生成的阳离子与电解质溶液中的阴离子是否共存。若不共存，则电解质溶液中的阴离子应写入负极反应式中。 <a href="/?from=ask_words" style="color:red" target="_blank">点击前往免费阅读更多精彩小说</a>

National Day is on October 1st. We celebrate China's birthday. It's a great day. (National Day is on October 1st. We celebrate China's birthday. It was a great day.) <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Zhang Hanliang, a female martial arts internet celebrity in Gansu Province, released a god-level video in 2021,"Put on your headphones and don't blink." Once it was released, it became popular all over the Internet, and the number of views easily exceeded 100 million. As a UP Master of Bilibili, the total views of her uploaded videos had exceeded 16 million views. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Dongting Autumn Evening, an online restaurant on Shanghai Commercial Street in Fudihai, Huihui Shuttle Fish Hotpot and Smurf Dumpling House at Simenkou Station could be used as restaurants near Yangsigang Bridge. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

This statement was not completely accurate. Huo Yuhao had feelings for Tang Wutong. When Tang Wutong appeared as Wang Dong 'er, she was the one Huo Yuhao loved the most in his life. However, Huo Yuhao's relationship experience was more complicated. In his relationship with Tang Wutong, he also had many emotional entanglements with other women, which affected people's judgment of whether he only liked Tang Wutong to a certain extent.

"I've already become a Title Douluo, and I'm only coming to the system?" In this novel, the main character Qin Xiao transmigrated to Douluo Continent and awakened the Thunder Emperor martial soul, one of the Ten Fierce Beasts. There was also " Han Lie Traversing Douluo Continent ", where the main character, Han Lie, awakened the Thunder Emperor martial soul after crossing Douluo Continent.

At present, he only knew that Liu Chun's novel was 'Godly Doctor Little Daoist'. He could not obtain a complete list of his novels. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

In Glory of the Special Forces, the Dakota Fire Pit was mentioned. The principle was that oxygen would enter the small hole and the big hole would burn. Yan Poyue buried the landmine in the big hole and covered it with mud. He also covered the small hole with the bodies of the drug dealers. When the drug dealers arrived, they moved the bodies away and stabbed the big hole with a knife. The big hole burned and caused the mine to explode. Hurry up and click on the link below to return to the super classic " Lord of Mysteries "!

< Shu Daughter Upgrade Manual > told the story of a woman who was an 18th-tier actress. Due to a serious illness, she transmigrated to the Pei family's seventh miss, Pei Zhaoyue. She was treated badly by her stepmother. However, she used her acting skills to play with conspiracies and schemes. After she was sent to the palace, her position in the palace continued to rise, from Bao Lin, to a beauty, to a noble concubine, and finally to the empress. During this process, there was someone who clung to her like a cowhide plaster. The two of them even had some interesting interactions, such as " Get lost!" "No! I can't sleep without you." Wait. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The complete works of a novel in TMT format were generally about 10M, with 1M = 1024Kb, which was about 10240Kb after conversion. However, this was only a rough reference value. The file size of different types, lengths, and contents of novels would vary. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>