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116问答网 > 酸与碱发生中和反应生成1mol水时放出的热量叫中和热。若该实验放出的热量是1.43KJ，则反应的中

酸与碱发生中和反应生成1mol水时放出的热量叫中和热。若该实验放出的热量是1.43KJ，则反应的中

和热量是多少实验用50ml 0.5mol/L的盐酸和50ml 0.55mol/L烧碱

2025-04-06 07:59:28

推荐回答（1个）

回答1：

烧碱是氢氧化钠，由题可知盐酸物质量为50ml 0.5mol/L两值相乘，得0.025mol。而氢氧化钠物质量明显大于盐酸的物质的量。盐酸和烧碱反应中和按照一比一的比例反应。所以反应需要0.025mol盐酸和0.025mol氢氧化钠。反应生成0.025mol水。同时释放出1.43KJ热量。生成0.025mol水释放1.43KJ的热量，则生成1mol水释放出的中和热为57.2KJ。

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