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<p>conformation with higher energy. The reaction mechanism involving staggered conformation is more favorable for E2 reactions (unlike E1 reactions).<br/>
* E2 typically uses a strong <a href="page.php?w=base_%28chemistry%29">base</a>. It must be strong enough to remove a weakly acidic hydrogen.<br/>
* In order for the pi bond to be formed, the <a href="page.php?w=orbital_hybridization">hybridization</a> of carbons needs to be lowered from sp<sup>3</sup> to sp<sup>2</sup>.<br/>
* The C-H bond is weakened in the <a href="page.php?w=rate_determining_step">rate determining step</a></p><p>
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