reaction in high temp, 一定唔係endothermic/exothermic reaction?

in high temp既反應都唔一定係end或者ex....
因為有Ka(activation energy)
無論係end/ex,分子都要突破一定既Ka才能進行反應
而Ka永遠都係energy profile(能線圖)中最高...
所以無論end/ex.....都要有一定既Ka(可以話係溫度)才能進行
所以係高溫都唔一定係end/ex
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不過高反應會影響反應既平衡位置及常數......
end向右,ex向左(反應方向)

I think it shouldnt be exothermic. Endothermic reaction absorbs energy while exothermic releases energy.