已知C（s，石墨）→C（s，金刚石）-1.9KJ，且知金刚石密度更大，则&kbsp;C（s，石墨）与C（s，金刚石
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C\uff08s\uff0c\u77f3\u58a8\uff09\u2192C\uff08s\uff0c\u91d1\u521a\u77f3\uff09\u25b3H=1.9KJ/mol\uff0c\u77f3\u58a8\u751f\u6210\u91d1\u521a\u77f3\u5438\u70ed\uff0c\u8bf4\u660e\u77f3\u58a8\u80fd\u91cf\u4f4e\uff0c\u91d1\u521a\u77f3\u80fd\u91cf\u9ad8\uff1b\u80fd\u91cf\u8d8a\u9ad8\u8d8a\u6d3b\u6cfc\uff0c\u80fd\u91cf\u8d8a\u4f4e\u8d8a\u7a33\u5b9a\uff1bA\u3001\u7b49\u8d28\u91cf\u65f6\u77f3\u58a8\u80fd\u91cf\u4f4e\u4e8e\u91d1\u521a\u77f3\uff0c\u6545\u77f3\u58a8\u66f4\u7a33\u5b9a\uff0c\u6545A\u9519\u8bef\uff1bB\u3001\u77f3\u58a8\u548c\u91d1\u521a\u77f3\u90fd\u662f\u78b3\u7684\u5355\u8d28\uff0c\u7b49\u8d28\u91cf\u65f6\u71c3\u70e7\u91d1\u521a\u77f3\u653e\u51fa\u70ed\u91cf\u591a\uff0c\u6545B\u9519\u8bef\uff1bC\u3001\u6b64\u5e73\u8861\u662f\u5438\u70ed\u53cd\u5e94\uff0c\u9ad8\u6e29\u5e73\u8861\u6b63\u5411\u8fdb\u884c\uff0c\u77f3\u58a8\u662f\u5c42\u72b6\u7ed3\u6784\uff0c\u5c42\u72b6\u4e4b\u95f4\u4e3b\u8981\u8868\u73b0\u4e3a\u5206\u5b50\u95f4\u4f5c\u7528\u529b\uff0c\u4e5f\u5c31\u662f\u8303\u5fb7\u5316\u529b\uff0c\u91d1\u521a\u77f3\u4e3b\u8981\u8868\u73b0\u4e3a\u539f\u5b50\u95f4\u4f5c\u7528\u529b\uff0c\u7ed3\u6784\u952e\u80fd\u5f88\u5927\uff0c\u5e76\u4e14\u952e\u957f\u77ed\uff0c\u6240\u4ee5\u9ad8\u6e29\u9ad8\u538b\u5229\u4e8e\u77f3\u58a8\u8f6c\u6362\u6210\u91d1\u521a\u77f3\uff0c\u6545C\u6b63\u786e\uff1bD\u3001\u77f3\u58a8\u662f\u5c42\u72b6\u7ed3\u6784\uff0c\u5c42\u95f4\u662f\u8303\u5fb7\u534e\u529b\uff0c\u6bcf\u5c42\u4e0a\u662f\u5171\u4ef7\u952e\uff0c\u91d1\u521a\u77f3\u662f\u5171\u4ef7\u952e\u8fde\u63a5\u5f62\u6210\u7684\u7a7a\u95f4\u7f51\u72b6\u7ed3\u6784\uff0c\u7194\u5316\u65f6\u77f3\u58a8\u7834\u574f\u4e86\u8303\u5fb7\u534e\u529b\u548c\u5171\u4ef7\u952e\uff0c\u91d1\u521a\u77f3\u7834\u574f\u4e86\u5171\u4ef7\u952e\uff0c\u6545D\u9519\u8bef\uff1b\u6545\u9009C\uff0e
C（s，石墨）→C（s，金刚石）△H=九.9我J/mol，石墨生成金刚石吸热，说明石墨能量低，金刚石能量高；能量越高越活泼，能量越低越稳定；A、等质量时石墨能量低于金刚石，故石墨更稳定，故A错误；
B、石墨和金刚石都是碳六单质，等质量时燃烧金刚石放出热量多，故B错误；
C、此平衡是吸热反应，高温平衡正向进行，石墨是层状结构，层状之间主要表现为分子间作用力，也就是范德化力，金刚石主要表现为原子间作用力，结构键能很y，并且键长短，所以高温高压利于石墨转换成金刚石，故C正确；
D、石墨是层状结构，层间是范德华力，每层g是共价键，金刚石是共价键连接形成六空间网状结构，熔化时石墨破坏了范德华力和共价键，金刚石破坏了共价键，故D错误；
故选C．
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绛旓細鈶C锛堢煶澧級+O2锛坓锛=CO2锛坓锛夆柍H=-393.51kJ?mol-1 鈶锛堥噾鍒氱煶锛+O2锛坓锛=CO2锛坓锛夆柍H=-395.41kJ?mol-1锛 鈶-鈶″彲寰楋細C锛堢煶澧級=C锛堥噾鍒氱煶锛夆柍H=+1.9kJ?mol-1锛孉銆佺煶澧ㄨ浆鍖栦负閲戝垰鐭冲惛鐑紝閲戝垰鐭宠兘閲忓ぇ浜庣煶澧ㄧ殑鎬昏兘閲忥紝鐗╄川鐨勯噺鑳介噺瓒婂ぇ瓒婁笉绋冲畾锛屽垯鐭冲ⅷ姣旈噾鍒氱煶绋冲畾锛...
绛旓細C 璇曢鍒嗘瀽锛欰銆佺敱鍙嶅簲锛C(鐭冲ⅷ锛宻) C(閲戝垰鐭筹紝s)锛涒柍H>0鐭锛岀煶澧鍏锋湁鐨勮兘閲忎綆锛岀墿璐ㄥ叿鏈夌殑鑳介噺瓒婁綆瓒婄ǔ瀹氾紝鍒欑煶澧ㄦ瘮閲戝垰鐭崇ǔ瀹氾紝閿欒锛汢銆佲柍H澶у皬姣旇緝瑕佸甫绗﹀彿姣旇緝锛屽浜庢斁鐑弽搴旇岃█锛屾斁鍑虹殑鐑噺瓒婂锛屸柍H瓒婂皬锛屽垯鈻矵 1 锛溾柍H 2 锛岄敊璇紱C銆101kPa鏃讹紝2H 2 (g)+O 2 (g)=2H...
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绛旓細鐢遍噾鍒氱煶杞寲涓虹煶澧ㄧ殑鐑寲瀛︽柟绋嬪紡涓 锛岀敱鐑寲瀛﹀弽搴旀柟绋嬪紡鐪嬫潵锛屾洿绋冲畾鐨勭⒊鐨勫悓绱犲紓褰綋鏄 銆傞鍨嬶細濉┖棰橀毦搴︼細涓。鏉ユ簮锛氫笉璇 绛旀锛堟壘浣滀笟绛旀--->>涓婇瓟鏂规牸锛夛紙4鍒嗭級鐑寲瀛︽柟绋嬪紡C锛坰銆侀噾鍒氱煶锛夆鈫扖锛坰銆鐭冲ⅷ锛锛涒柍H = -1.9kJ路mol鈥1锛屾洿绋冲畾鐨勭⒊鐨勫悓绱犲紓褰綋鏄 鐭冲ⅷ 銆
