下列说法正确的是（ ）A．由石墨比金刚石稳定可知：C（金刚石，s）═C（石墨，s）△H＜0B．在101 kPa
\u5df2\u77e525\u2103\u3001101kPa\u4e0b\uff0c\u77f3\u58a8\u3001\u91d1\u521a\u77f3\u71c3\u70e7\u7684\u70ed\u5316\u5b66\u65b9\u7a0b\u5f0f\u5206\u522b\u4e3a\uff08\u3000\u3000\uff09C\uff08\u77f3\u58a8\uff09+O2\uff08g\uff09\u2550CO2\uff08g\uff09\u25b3H=-39\u7531\u77f3\u58a8\u3001\u91d1\u521a\u77f3\u71c3\u70e7\u7684\u70ed\u5316\u5b66\u65b9\u7a0b\u5f0f\u2460C\uff08\u77f3\u58a8\uff09+O2\uff08g\uff09=CO2\uff08g\uff09\u25b3H=-393.51kJ?mol-1\u2461C\uff08\u91d1\u521a\u77f3\uff09+O2\uff08g\uff09=CO2\uff08g\uff09\u25b3H=-395.41kJ?mol-1\uff0c\u5229\u7528\u76d6\u65af\u5b9a\u5f8b\u5c06\u2460-\u2461\u53ef\u5f97\uff1aC\uff08\u77f3\u58a8\uff09=C\uff08\u91d1\u521a\u77f3\uff09\u25b3H=+1.9kJ?mol-1\uff0c\u5219\u2460\u7531\u77f3\u58a8\u5236\u5907\u91d1\u521a\u77f3\u662f\u5438\u70ed\u53cd\u5e94\uff0c\u6545\u6b63\u786e\uff1b \u2461\u7531\u77f3\u58a8\u5236\u5907\u91d1\u521a\u77f3\u662f\u5438\u70ed\u53cd\u5e94\uff0c\u6545\u9519\u8bef\uff1b\u2462\u91d1\u521a\u77f3\u80fd\u91cf\u5927\u4e8e\u77f3\u58a8\u7684\u603b\u80fd\u91cf\uff0c\u7269\u8d28\u80fd\u91cf\u8d8a\u9ad8\u8d8a\u4e0d\u7a33\u5b9a\uff0c\u6240\u4ee5\u76f8\u540c\u6761\u4ef6\u4e0b\u77f3\u58a8\u6bd4\u91d1\u521a\u77f3\u7a33\u5b9a\uff0c\u6545\u6b63\u786e\uff1b\u2463\u91d1\u521a\u77f3\u80fd\u91cf\u5927\u4e8e\u77f3\u58a8\u7684\u603b\u80fd\u91cf\uff0c\u7269\u8d28\u80fd\u91cf\u8d8a\u9ad8\u8d8a\u4e0d\u7a33\u5b9a\uff0c\u6240\u4ee5\u76f8\u540c\u6761\u4ef6\u4e0b\u77f3\u58a8\u6bd4\u91d1\u521a\u77f3\u7a33\u5b9a\uff0c\u6545\u9519\u8bef\uff1b\u6545\u9009A\uff0e
\u7531\u77f3\u58a8\u3001\u91d1\u521a\u77f3\u71c3\u70e7\u7684\u70ed\u5316\u5b66\u65b9\u7a0b\u5f0f\u2460C\uff08\u77f3\u58a8\uff09+O 2 \uff08g\uff09=CO 2 \uff08g\uff09\u25b3H=-393.51kJ?mol -1 \u2461C\uff08\u91d1\u521a\u77f3\uff09+O 2 \uff08g\uff09=CO 2 \uff08g\uff09\u25b3H=-395.41kJ?mol -1 \uff0c\u5229\u7528\u76d6\u65af\u5b9a\u5f8b\u5c06\u2460-\u2461\u53ef\u5f97\uff1aC\uff08\u77f3\u58a8\uff09=C\uff08\u91d1\u521a\u77f3\uff09\uff1b\u25b3H=+1.9kJ?mol -1 \uff0c\u5219A\u3001C\uff08\u77f3\u58a8\uff09=C\uff08\u91d1\u521a\u77f3\uff09\u25b3H=+1.9kJ?mol -1 \uff0c\u53ef\u77e5\u7531\u77f3\u58a8\u5236\u5907\u91d1\u521a\u77f3\u662f\u5438\u70ed\u53cd\u5e94\uff0c\u6545A\u6b63\u786e\uff1bB\u3001C\uff08\u77f3\u58a8\uff09=C\uff08\u91d1\u521a\u77f3\uff09\u25b3H=+1.9kJ?mol -1 \uff0c\u53ef\u77e5\u7531\u77f3\u58a8\u5236\u5907\u91d1\u521a\u77f3\u662f\u5438\u70ed\u53cd\u5e94\uff0c\u6545B\u9519\u8bef\uff1bC\u3001C\uff08\u77f3\u58a8\uff09=C\uff08\u91d1\u521a\u77f3\uff09\u25b3H=+1.9kJ?mol -1 \uff0c\u53ef\u77e5\u7531\u77f3\u58a8\u5236\u5907\u91d1\u521a\u77f3\u662f\u5438\u70ed\u53cd\u5e94\uff0c\u91d1\u521a\u77f3\u80fd\u91cf\u5927\u4e8e\u77f3\u58a8\u7684\u603b\u80fd\u91cf\uff0c\u6545C\u6b63\u786e\uff1bD\u3001C\uff08\u77f3\u58a8\uff09=C\uff08\u91d1\u521a\u77f3\uff09\u25b3H=+1.9kJ?mol -1 \uff0c\u53ef\u77e5\u7531\u77f3\u58a8\u5236\u5907\u91d1\u521a\u77f3\u662f\u5438\u70ed\u53cd\u5e94\uff0c\u91d1\u521a\u77f3\u80fd\u91cf\u5927\u4e8e\u77f3\u58a8\u7684\u603b\u80fd\u91cf\uff0c\u6545D\u9519\u8bef\uff1b\u6545\u9009\uff1aAC\uff0e
A、石墨比金刚石稳定，说明石墨的总能量小于金刚石的总能量，则金刚石转化为石墨放热，故A正确；B、H2完全燃烧生成的稳定氧化物是液态水，H2的燃烧热为△H=-285.8 kJ?mol-1，故B错误；
C、燃烧热是指可燃物完全燃烧生成稳定的氧化物所放出的热量，应该生成二氧化碳，故C错误；
D、中和热只是酸碱反应释放的热量，浓硫酸在稀释时会放出热量，不属于中和热，故D错误．
故选B．
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绛旓細10.涓嬪垪璇存硶姝ｇ‘鐨勬槸锛C)A.姘у寲閾滄槸鏈夋阿姘у寲閾滃拰绋纭吀鍙嶅簲鍒跺緱 B.姘у寲閾佹槸鐢遍搧鍦ㄦ哀姘斾腑鐕冪儳鍒跺緱 C.閫氳繃澶氭瀵规瘮瀹為獙閮藉彂鐜版哀鍖栭摐鐨勫姞閫熸晥鏋滃ソ浜庨摐涓濓紝鍥犺屽緱鍑哄垵姝ョ粨璁猴細姘у寲閾滃杩囨哀鍖栨阿鍒嗚В鐨勫姞閫熶綔鐢ㄥソ浜庨摐涓 D.浠庢哀鍖栭搧鐨勫姞閫熸晥鏋滃ソ浜庨搧涓濓紝灏卞彲璁ゅ畾姘у寲鐗╃殑鍔犻熸晥鏋滃ソ浜庡崟璐 鐢ㄦ帓闄ゆ硶鍟 A涓...
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