[化學] 普化問題
大家好
小的程度真的很差
這題真的想不出來
不知從何解題
因為不知道怎麼打出三角形...所以我打熱變化 = =
大家應該看得懂吧...
A 10.0g chunk of sodium metal (Na) is dropped into a mixture
of 50.0g of water and 50.0g of ice at 0度C.
The reaction is as follows:
2 Na(s) + 2 H2O(l) 生成 2 NaOH(aq) + H2(g) 熱變化=-368KJ
The 熱變化fus of ice is 6.0 KJ/mole.
Assuming that the final mixture has a heat capacity of 4.18J/g度C,
calculate the final temperature?
ans:138度C
我確定我沒打錯 所以如果有錯也許是題目錯
我只能想到是...10g的鈉 是不是也只有10g的水會反應?
然後想到吸熱等於放熱這個觀念
但就是不知道怎麼解題 實在是離化學很久遠了...
還有個問題是
heat capacity 熱容量(每升高一度C所需之熱)
specific heat 比熱(每g每升高一度C所需之熱)
heat of fusion 融化熱(融化一克所需之熱)
這三者我這樣寫對嗎?
感謝眾版友幫忙~
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 58.114.157.205
推
09/21 16:06, , 1F
09/21 16:06, 1F
→
09/21 16:07, , 2F
09/21 16:07, 2F
推
09/21 16:12, , 3F
09/21 16:12, 3F
→
09/21 17:20, , 4F
09/21 17:20, 4F
→
09/21 17:20, , 5F
09/21 17:20, 5F
推
09/21 17:21, , 6F
09/21 17:21, 6F
→
09/21 17:21, , 7F
09/21 17:21, 7F
→
09/21 17:42, , 8F
09/21 17:42, 8F
推
09/21 17:51, , 9F
09/21 17:51, 9F
→
09/21 17:52, , 10F
09/21 17:52, 10F
→
09/21 17:52, , 11F
09/21 17:52, 11F
→
09/21 17:53, , 12F
09/21 17:53, 12F
→
09/21 17:54, , 13F
09/21 17:54, 13F
→
09/21 17:55, , 14F
09/21 17:55, 14F
→
09/21 17:56, , 15F
09/21 17:56, 15F
→
09/21 17:57, , 16F
09/21 17:57, 16F
→
09/21 17:58, , 17F
09/21 17:58, 17F
→
09/21 17:58, , 18F
09/21 17:58, 18F
→
09/21 17:59, , 19F
09/21 17:59, 19F
→
09/21 18:00, , 20F
09/21 18:00, 20F
→
09/22 11:51, , 21F
09/22 11:51, 21F
推
09/26 23:52, , 22F
09/26 23:52, 22F
推
09/29 08:37, , 23F
09/29 08:37, 23F
推
09/29 15:44, , 24F
09/29 15:44, 24F
推
09/29 15:49, , 25F
09/29 15:49, 25F
推
09/29 16:00, , 26F
09/29 16:00, 26F
→
09/29 16:02, , 27F
09/29 16:02, 27F
→
09/29 16:03, , 28F
09/29 16:03, 28F
→
09/29 16:03, , 29F
09/29 16:03, 29F
→
09/29 16:07, , 30F
09/29 16:07, 30F
→
09/29 16:10, , 31F
09/29 16:10, 31F
→
09/29 16:10, , 32F
09/29 16:10, 32F
→
09/29 22:06, , 33F
09/29 22:06, 33F
討論串 (同標題文章)