課程名稱︰普通化學甲
課程性質︰必修
課程教師︰林萬寅
開課學院：理學院
開課系所︰物理系
考試日期（年月日）︰08.10.08
考試時限（分鐘）：15min
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
The reaction between potassium chlorate (KCLO3) and red phosphorus (P4) takes
place when you strike a match on a match box. The reaction produces two
products A and KCl. Product A has a molar mass of 284.0 and contains 43.7%
P and 56.3 O. Answer the following questions. (K = 39.1, Cl = 35.5, P = 31.0,
O = 16.0)
(a) Find the empirical formula of compound A. 6%
(b) Find the molecular formula of compound A. 2%
(c) Write a balanced equation for the reaction: KClO3(s)+P4(s)→A+KCl(s) 4%
(d) Find the theoretical yield of A when 7.4g KClO3(s) and 4.7g P4(s)reacts 6%
(e) Find the actual yield of A if the percent yield is 75% for the reaction. 2%
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◆ From: 118.168.41.205
※ 編輯: def2864 來自: 118.168.41.205 (06/30 19:42)