[{"data":1,"prerenderedAt":205},["ShallowReactive",2],{"topic-page:\u002Fhigh-school\u002Fbasic-chemistry\u002Facid-base-and-redox\u002Fmetal-ionization-tendency":3},{"topic":4,"category":169,"seo":174,"breadcrumbs":179,"prerequisites":186,"nextTopics":196,"relatedTopics":204},{"id":5,"slug":6,"title":7,"summary":8,"canonicalPath":9,"categoryPath":10,"difficulty":11,"targetAudience":12,"estimatedMinutes":13,"generatedAt":14,"publishedAt":14,"updatedAt":14,"reviewStatus":15,"tags":16,"expectedKnowledge":22,"learningGoal":26,"blocks":27},"high-school-basic-chemistry-acid-base-and-redox-metal-ionization-tendency","metal-ionization-tendency","金属のイオン化傾向","金属が水溶液中で電子を失って陽イオンになろうとする傾向を比較し、金属と金属イオンの置換反応を予測します。","\u002Fhigh-school\u002Fbasic-chemistry\u002Facid-base-and-redox\u002Fmetal-ionization-tendency","\u002Fhigh-school\u002Fbasic-chemistry\u002Facid-base-and-redox","beginner","student_high",6,"2026-07-28","ai_generated",[17,18,19,20,21],"化学基礎","イオン化傾向","金属","置換反応","酸化還元",[23,24,25],"酸化剤・還元剤","金属イオン","半反応式","限られた金属のイオン化傾向の順序から水溶液中の置換反応を予測し、電子の与え手と受け手を説明できるようになる。",[28,34,42,67,82,88,98,121,127,134,150,159],{"id":29,"type":30,"title":31,"subtitle":32,"shortDefinition":33},"hero","HeroBlock","電子を出しやすい金属が相手を還元する","水溶液中の置換を順序から予測","金属のイオン化傾向は、金属が電子を失って陽イオンになろうとする程度の目安です。傾向が大きい金属は、小さい金属のイオンへ電子を渡せます。",{"id":35,"type":36,"term":7,"definition":37,"plainExplanation":38,"keywords":39},"definition","DefinitionBlock","水溶液中で金属原子が電子を失い、陽イオンになろうとする傾向です。","ZnはCuよりイオン化傾向が大きいため、Zn金属をCu²⁺水溶液へ入れると、Znが電子を失ってZn²⁺になり、Cu²⁺が電子を受け取ってCuとして析出します。逆にCu金属をZn²⁺水溶液へ入れても、この単純な置換は進みにくいと予測します。",[40,41,20],"電子を出す金属","陽イオンになりやすさ",{"id":43,"type":44,"title":45,"lead":46,"formulas":47,"strategy":66},"formula","FormulaBlock","亜鉛と銅イオンの半反応","二つの半反応を電子2個で結びます。",[48,57],{"label":49,"expression":50,"meaning":51,"symbols":52,"tip":56},"酸化","Zn(s) → Zn²⁺(aq) + 2e⁻","イオン化傾向が大きいZnが電子を与えます。",[53],{"symbol":54,"meaning":55},"Zn","還元剤として酸化される金属","金属板のZn原子が水溶液中のイオンになります。",{"label":58,"expression":59,"meaning":60,"symbols":61,"tip":65},"還元","Cu²⁺(aq) + 2e⁻ → Cu(s)","Cu²⁺が電子を受け取り、金属Cuとして析出します。",[62],{"symbol":63,"meaning":64},"Cu²⁺","酸化剤として還元されるイオン","電子数はZn側と同じ2個です。","金属単体と相手の金属イオンを特定し、単体の金属が順序で上なら電子を与える半反応を予測します。",{"id":68,"type":44,"title":69,"lead":70,"formulas":71,"strategy":81},"formula-total","置換反応の全体式","二つの半反応を足して電子2個を消去します。",[72],{"label":73,"expression":74,"meaning":75,"symbols":76,"tip":80},"全体","Zn(s) + Cu²⁺(aq) → Zn²⁺(aq) + Cu(s)","原子数と電荷合計+2が左右で一致します。",[77],{"symbol":78,"meaning":79},"(s)\u002F(aq)","固体／水溶液","硫酸イオンなど傍観イオンは正味の式から省きます。","電子を消去した後、反応前後の元素数と電荷合計が一致するか確認します。",{"id":83,"type":84,"src":85,"alt":86,"caption":87},"diagram","DiagramBlock","\u002Fassets\u002Fhigh-school\u002Fbasic-chemistry\u002Facid-base-and-redox\u002Fmetal-ionization-tendency\u002Fmetal-displacement.svg","Zn、Fe、水素、Cu、Agのイオン化傾向の順序と、亜鉛から銅イオンへの電子移動を示す図","Zn＞Fe＞H＞Cu＞Agの代表的な順序と、ZnがCu²⁺へ電子を渡す置換を示します。順位、粒子記号、矢印で判断根拠を表します。",{"id":89,"type":90,"steps":91,"title":97},"steps","StepBlock",[92,93,94,95,96],"金属単体Mと、水溶液中の別の金属イオンXを特定する","代表的なイオン化傾向の順序でMとXの金属を比較する","Mが上ならMの酸化とXイオンの還元を半反応で書く","電子数をそろえて全体式を作り、原子数と電荷を確認する","濃度や表面状態など条件による限界を添えて予測とする","置換を予測する手順",{"id":99,"type":100,"columns":101,"rows":105,"summary":120},"compare","CompareBlock",[102,103,104],"組合せ","単純な予測","電子の向き",[106,110,113,117],[107,108,109],"Zn + Cu²⁺","置換が進む","ZnからCu²⁺",[111,108,112],"Fe + Cu²⁺","FeからCu²⁺",[114,115,116],"Cu + Zn²⁺","進みにくい","CuはZnより下",[118,108,119],"Cu + 2Ag⁺","CuからAg⁺","この表は水溶液中の代表的条件での傾向です。反応の速さや安全性を保証するものではありません。",{"id":122,"type":123,"scenario":124,"explanation":125,"result":126},"example","ExampleBlock","Fe(s)をCuSO₄(aq)へ入れたときの正味の反応を予測する。代表順序をFe＞Cuとする。","FeはCuよりイオン化傾向が大きいため、Fe→Fe²⁺+2e⁻と酸化されます。Cu²⁺+2e⁻→Cuと還元されます。電子2個を消去するとFe+Cu²⁺→Fe²⁺+Cuです。SO₄²⁻は傍観イオンです。","正味の式はFe(s)+Cu²⁺(aq)→Fe²⁺(aq)+Cu(s)です。Feが還元剤、Cu²⁺が酸化剤です。",{"id":128,"type":129,"warningTitle":130,"message":131,"severity":132,"action":133},"warning","WarningBlock","順序だけで実験を決めない","イオン化傾向は水溶液中の反応を考える目安で、反応速度、酸化被膜、濃度などにより観察結果が単純でない場合があります。反応性の高い金属を水や酸へ入れる実験を自分で行いません。","critical","学校で指定された金属・溶液・保護具・廃棄方法に従い、ここでは式の予測に限定しましょう。",{"id":135,"type":136,"title":137,"questions":138},"quiz","QuizBlock","確認テスト",[139],{"question":140,"choices":141,"answerIndex":145,"choiceExplanations":146},"Zn＞Cuの順序を用いると、Cu(s)をZn²⁺(aq)へ入れたときの予測として適切なのはどれですか。",[142,143,144],"単純な置換は進みにくい","CuがCu²⁺になりZnが析出する","Zn²⁺が電子を与えてZnになる",0,[147,148,149],"正解です。CuはZnよりイオン化傾向が小さく、Zn²⁺へ電子を与えにくいと予測します。","この向きには、CuがZnより電子を出しやすい必要がありますが順序と逆です。","Zn²⁺がZnになるには電子を受け取る必要があり、電子を与える説明は逆です。",{"id":151,"type":152,"title":153,"points":154},"summary","SummaryBlock","まとめ",[155,156,157,158],"イオン化傾向は金属が電子を失って陽イオンになろうとする目安","傾向が大きい金属は、小さい金属のイオンへ電子を渡せる","置換反応は半反応式の電子数、原子数、電荷で検算する","水溶液条件の傾向であり、反応速度や安全を保証する絶対則ではない",{"id":160,"type":161,"title":162,"nextTopics":163,"relatedKeywords":165},"next-action","NextActionBlock","次はダニエル電池の反応へ",[164],"high-school-basic-chemistry-acid-base-and-redox-daniell-cell-redox-reaction",[166,167,168],"ダニエル電池","負極","正極",{"path":10,"title":170,"description":171,"parentPath":172,"accentToken":173},"酸・塩基と酸化還元","酸・塩基と中和、pH、酸化還元、金属のイオン化傾向や電池の入口を整理していくカテゴリです。","\u002Fhigh-school\u002Fbasic-chemistry","signal-blue",{"title":175,"description":176,"canonicalUrl":177,"ogImage":178},"金属のイオン化傾向 | 化学基礎","Zn、Fe、Cu、Agのイオン化傾向から、金属と金属イオンの置換反応と電子の流れを予測します。","https:\u002F\u002Fzeqnilo.com\u002Fhigh-school\u002Fbasic-chemistry\u002Facid-base-and-redox\u002Fmetal-ionization-tendency","https:\u002F\u002Fzeqnilo.com\u002Fassets\u002Fsite\u002Fdefault-og.svg",[180,183,184,185],{"title":181,"path":182},"高校","\u002Fhigh-school",{"title":17,"path":172},{"title":170,"path":10},{"title":7,"path":9},[187],{"id":188,"title":189,"summary":190,"canonicalPath":191,"categoryPath":10,"categoryTitle":170,"difficulty":11,"targetAudience":12,"estimatedMinutes":13,"publishedAt":14,"updatedAt":14,"reviewStatus":15,"tags":192},"high-school-basic-chemistry-acid-base-and-redox-oxidizing-reducing-agents-and-equations","酸化剤・還元剤と反応式","電子を受け取って相手を酸化する酸化剤と、電子を与えて相手を還元する還元剤を半反応式から判断します。","\u002Fhigh-school\u002Fbasic-chemistry\u002Facid-base-and-redox\u002Foxidizing-reducing-agents-and-equations",[17,193,194,25,195],"酸化剤","還元剤","電子数",[197],{"id":164,"title":198,"summary":199,"canonicalPath":200,"categoryPath":10,"categoryTitle":170,"difficulty":11,"targetAudience":12,"estimatedMinutes":13,"publishedAt":14,"updatedAt":14,"reviewStatus":15,"tags":201},"ダニエル電池の酸化還元反応","亜鉛側の酸化と銅側の還元を分け、負極・正極、外部回路の電子の向き、塩橋の役割を対応させます。","\u002Fhigh-school\u002Fbasic-chemistry\u002Facid-base-and-redox\u002Fdaniell-cell-redox-reaction",[17,166,21,202,203],"電子の流れ","塩橋",[],1785565316143]