作者alankuo (腳踏車+翅膀=飛翔的夢想)
看板TransBioChem
標題[化學] 請教幾題97年北科的題目
時間Fri Jul 3 13:11:07 2009
我想請問一下有誰知道以下的答案啊
Applying with thermodynamics, what is the cannot determine?
（A.）The direction of a spontaneous reaction.
（B.）The extent of a reaction.
（C.）The value of the equilibrium constant.
（D.）The speed of a reaction.
==============================================================================
When the system is at equilibrium for the gas phase reaction at 300℃ :
N2 + 3H2←→NH3 , and the equilibrium constant(Keq) is 4.34*10^-3 .
Which description below for the reaction is correct?
（A.）Only products are present.
（B.）Only reactants are present.
（C.）Reactants predominate.
（D.）Roughly equal amounts of products and reactants are present.
==============================================================================
Natural, unpolluted is typically acidic. Which one is the source of
this acidity?
（A.）HCl
（B.）CO2
（C.）SO3
（D.）NO2
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 218.164.85.189
1F：推 za7550295566:第一題 我是選D 第二題 C D好像都感覺是對的.. 07/03 23:41
2F：推 za7550295566:更正一下 第二題 c選項 成立在 知道起始濃度 07/04 09:41
3F：→ za7550295566:如果Q>Keq 則反應物 Q<Keq則產物 07/04 09:42