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中和反应

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中和反应

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Also known as acid-base reaction, neutralisation

chemical reaction

AI overview

Neutralization is a chemical reaction in which an acid and a base react together to form a salt and water, canceling out each other's properties. This reaction matters because it allows us to safely handle dangerous acidic or basic substances by converting them into neutral compounds, and it's essential in many practical applications from cleaning to food preparation.

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Article · 中文

中和反应是化学反应中复分解反应的一种,是指酸和碱互相交换组分,生成盐和水的反应,在中和的過程中,酸裡的氫離子和碱中的氢氧根离子會結合成水。中和反应的过程会释放热量,属于放热反应,莫耳氫氧根和氫離子反應吸收55.90千焦耳熱量。 一般来说,反应如此进行: 酸 + 碱/ 鹽基 → 盐 + 水 例如,盐酸和氢氧化钠发生中和反应,產生氯化鈉和水: HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l) 因为在这个反应中HCl和NaOH离解为离子,所以离子方程式是: H+(aq) + Cl−(aq) + Na+(aq) + OH−(aq) → Na+(aq) + Cl−(aq) + H2O(l) 因为钠离子和氯离子都只是“旁观离子”,不包括在反应中,净离子反应式成为: H+(aq) + OH−(aq) → H2O(l) ; ΔrH = −57.3 kJ mol−1

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