Option 1 -<p>Doubling the concentration of base will double the rate of both the reactions<br><!-- [if !supportLineBreakNewLine]--><br><!--[endif]--></p>
Option 2 -<p>Changing the concentration of base will have no effect on reaction (1)<br><!-- [if !supportLineBreakNewLine]--><br><!--[endif]--></p>
Option 3 -<p>Changing the base from OH⁻ to ⁻OR will have no effect on reaction (2)</p>
Option 4 -<p>Changing the concentration of base will have no effect on reaction (2)</p>
Reaction (1) is SN1 (rate independent of [OH? ]). Reaction (2) is E2 (rate depends on [OH? ]). Statement (B) is correct. Changing concentration of base will have no effect on reaction (1).
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