依据事实,写出下列反应的热化学方程式.(1)在250C、101KPa时,1克甲醇(CH30H)完全燃烧生成CO2和液态 依据事实,写出下列反应的热化学方程式。(1)在25℃、101...

\uff081\uff09\u71c3\u70e7\u9700\u8981\u7684\u4e09\u4e2a\u6761\u4ef6\u662f\uff1a\u2460\u53ef\u71c3\u7269\uff1b \u2461______\uff1b\u2462______\uff0e\uff082\uff09\u5199\u51fa\u4e0b\u5217\u53cd\u5e94\u7684\u5316\u5b66\u65b9\u7a0b\u5f0f\uff0e\u2460\u71c3\u70e7\u7ea2

\uff081\uff09\u71c3\u70e7\u7684\u4e09\u4e2a\u6761\u4ef6\u662f\uff1a\u53ef\u71c3\u7269\u3001\u4e0e\u6c27\u6c14\u63a5\u89e6\u3001\u6e29\u5ea6\u8981\u8fbe\u5230\u7740\u706b\u70b9\uff0e\uff082\uff09\u2460\u7ea2\u78f7\u71c3\u70e7\u4ea7\u751f\u5927\u91cf\u7684\u767d\u70df\uff0c\u53ef\u7528\u4e8e\u5236\u9020\u70df\u5e55\uff0c\u53cd\u5e94\u7684\u5316\u5b66\u65b9\u7a0b\u5f0f\u4e3a\uff1a4P+5O2 \u70b9\u71c3 . 2P2O5 \uff0e\u2461\u8fc7\u6c27\u5316\u6c22\u5728\u4e8c\u6c27\u5316\u9530\u7684\u50ac\u5316\u4f5c\u7528\u4e0b\u751f\u6210\u6c34\u548c\u6c27\u6c14\uff0c\u53cd\u5e94\u7684\u5316\u5b66\u65b9\u7a0b\u5f0f\u4e3a\uff1a2H2O2 MnO2 . 2H2O+O2\u2191\uff0e\u2462\u94dd\u7c89\u4e0e\u6c27\u5316\u94c1\u9ad8\u6e29\u4e0b\u751f\u6210\u94c1\u548c\u6c27\u5316\u94dd\uff0c\u53cd\u5e94\u7684\u5316\u5b66\u65b9\u7a0b\u5f0f\u4e3a\uff1a2Al+Fe2O3 \u9ad8\u6e29 . 2Fe+Al2O3\uff0e\u6545\u7b54\u6848\u4e3a\uff1a\uff081\uff09\u4e0e\u6c27\u6c14\u63a5\u89e6\uff1b\u6e29\u5ea6\u8981\u8fbe\u5230\u7740\u706b\u70b9\uff1b\uff082\uff09\u24604P+5O2 \u70b9\u71c3 . 2P2O5 \uff1b\u24612H2O2 MnO2 . 2H2O+O2\u2191\uff1b\u24622Al+Fe2O3 \u9ad8\u6e29 . 2Fe+Al2O3\uff0e

(1)CH 3 OH(l)\uff0b O 2 (g)===CO 2 (g)\uff0b2H 2 O(l) \u0394H\uff1d\uff0d725.76 kJ\u00b7mol \uff0d 1 (2)N 2 (g)\uff0b2O 2 (g)===2NO 2 (g) \u0394H\uff1d\uff0b67.8 kJ\u00b7mol \uff0d 1 \u8bd5\u9898\u5206\u6790\uff1a\uff081\uff09\u71c3\u70e7\u70ed\u662f\u5728\u4e00\u5b9a\u6761\u4ef6\u4e0b\uff0c1mol\u53ef\u71c3\u7269\u5b8c\u5168\u71c3\u70e7\u751f\u6210\u7a33\u5b9a\u7684\u6c27\u5316\u7269\u65f6\u6240\u653e\u51fa\u7684\u70ed\u91cf\uff0c\u6240\u4ee51mol\u7532\u9187\u5b8c\u5168\u71c3\u70e7\u653e\u51fa\u7684\u70ed\u91cf\u662f22.68 kJ\u00d732\uff1d725.76 kJ\uff0c\u5219\u793a\u7532\u9187\u71c3\u70e7\u70ed\u7684\u70ed\u5316\u5b66\u65b9\u7a0b\u5f0f\u4e3aCH 3 OH(l)\uff0b O 2 (g)===CO 2 (g)\uff0b2H 2 O(l) \u0394H\uff1d\uff0d725.76 kJ\u00b7mol \uff0d 1 \u3002\uff082\uff09\uff0c\u6bcf\u751f\u621023 g NO 2 \u9700\u8981\u5438\u653616.95 kJ\u70ed\u91cf\uff0c\u5219\u8868\u793a\u8be5\u53cd\u5e94\u7684\u70ed\u5316\u5b66\u65b9\u7a0b\u5f0f\u4e3aN 2 (g)\uff0b2O 2 (g)===2NO 2 (g) \u0394H\uff1d\uff0b67.8 kJ\u00b7mol \uff0d 1 \u3002\u70b9\u8bc4\uff1a\u8be5\u9898\u662f\u57fa\u7840\u6027\u8bd5\u9898\u7684\u8003\u67e5\uff0c\u4fa7\u91cd\u5bf9\u5b66\u751f\u57fa\u7840\u77e5\u8bc6\u7684\u8bad\u7ec3\u3002\u8be5\u9898\u7684\u5173\u952e\u662f\u660e\u786e\u70ed\u5316\u5b66\u65b9\u7a0b\u5f0f\u7684\u542b\u4e49\u4ee5\u53ca\u4e66\u5199\u6ce8\u610f\u4e8b\u9879\uff0c\u6709\u5229\u4e8e\u57f9\u517b\u5b66\u751f\u89c4\u8303\u7684\u7b54\u9898\u80fd\u529b\uff0c\u63d0\u9ad8\u5b66\u751f\u7684\u5e94\u8bd5\u80fd\u529b\u548c\u5b66\u4e60\u6548\u7387\u3002

(1)在25℃、101kPa下,1g甲醇(CH3OH)燃烧生成CO2和液态水时放热22.68kJ,1mol甲醇完全燃烧生成二氧化碳和液态水放热为22.68kJ×32=725.76KJ,所以甲醇燃烧热的热化学方程式为CH3OH(l)+
3
2
O2(g)═CO2(g)+2H2O(l)△H=-725.76 kJ?mol-1
故答案为:CH3OH(l)+
3
2
O2(g)═CO2(g)+2H2O(l)△H=-725.76 kJ?mol-1
(2)1.00L 1.00mol/L H2SO4溶液与2.00L 1.00mol/L NaOH溶液完全反应,放出114.6kJ的热量,即生成2mol水放出114.6kJ的热量,反应的反应热为-11.46kJ/mol,中和热为-57.3kJ/mol,则中和热的热化学方程式:NaOH(aq)+
1
2
H2SO4(aq)=
1
2
Na2SO4(aq)+H2O(l)△H=-57.3kJ/mol,
故答案为:NaOH(aq)+
1
2
H2SO4(aq)=
1
2
Na2SO4(aq)+H2O(l)△H=-57.3kJ/mol;

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