以蔗糖为例，浓硫酸碳化反应方程式为：$C_{12}H_{22}O_{11}\stackrel{浓硫酸}{=\!=\!=}12C + 11H_{2}O$，反应过程中首先蔗糖在浓硫酸作用下脱水，生成碳和水，试验中蔗糖会变黑，黑色的就是碳颗粒;然后脱水反应产生的大量热让浓硫酸和碳发生反应：$C + 2H_{2}SO_{4}(浓)\stackrel{加热}{=\!=\!=}CO_{2}\uparrow+ 2SO_{2}\uparrow+ 2H_{2}O$。 现象为：被浓硫酸碳化的物质一般为含氢、氧元素的有机物，反应时有机物迅速变黑，这是由于浓硫酸按水分子中氢氧原子数的比（2∶1）夺取被脱水物中的氢原子和氧原子，使其碳化，同时可能会产生二氧化硫等气体。 <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>

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