實(shí)驗(yàn)一、燃燒熱的測定實(shí)驗(yàn)數(shù)據(jù)處理示例

1、第1頁共4頁圖1量熱計(jì)熱容的測定21.00021.50022.00022.50023.00023.50024.00024.500024681012t（min）T○C實(shí)驗(yàn)一、燃燒熱的測定(氧彈法)實(shí)驗(yàn)數(shù)據(jù)處理示例實(shí)驗(yàn)數(shù)據(jù)處理示例1（一）量熱計(jì)熱容(水當(dāng)量)的測定實(shí)驗(yàn)數(shù)據(jù)如下：時(shí)間時(shí)間(min)0.51.01.52.02.53.03.54.04.55.05.5溫度溫度(℃)21.38221.38521.38821.39121.39421.3

2、9721.42021.83522.52323.21723.714時(shí)間時(shí)間(min)6.06.57.07.58.08.59.09.510.010.511.0溫度溫度(℃)23.78523.83123.86623.89823.92423.95123.97223.99124.00924.01424.017樣品（苯甲酸）質(zhì)量m=0.8562g；其燃燒值為：－26460Jg0.8562g=－22655.05J作圖如下：由圖可得:?T=23.714

3、－21.430=2.284∵lQl≈0，∴－nQV－lQl=cΔTC=－nQVΔT計(jì)算得：量熱計(jì)熱容為c=（22655.05J）2.284=9919.02JK。（二）蔗糖燃燒熱的測定實(shí)驗(yàn)數(shù)據(jù)如下：時(shí)間時(shí)間(min)0.51.01.52.02.53.03.54.04.55.05.5溫度溫度(℃)20.73620.74420.75220.75620.76020.76420.98221.73222.23222.44722.533時(shí)間時(shí)間(mi

4、n)6.06.57.07.58.08.59.09.510.010.511.0溫度溫度(℃)22.60722.65422.68622.71222.72422.72822.73122.73322.73522.73722.739第3頁共4頁實(shí)驗(yàn)數(shù)據(jù)處理示例實(shí)驗(yàn)數(shù)據(jù)處理示例2實(shí)驗(yàn)數(shù)據(jù)：點(diǎn)火前的溫度(每隔1min)點(diǎn)火過程中的溫度(每隔15s)點(diǎn)火后的溫度每隔1min)18.1218.2219.9418.1218.5419.9618.1318.8

5、819.9818.1419.1719.9918.1519.3720.0018.1619.5320.0018.1719.6319.9918.1719.7219.9818.1819.8219.98苯甲酸18.1919.9019.9719.8820.6922.1719.9821.0322.1820.2821.3222.1920.3021.5422.2020.3121.7022.2220.3221.8322.2020.3421.9822.192