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Chemistry: Post your doubts here!

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But the question specifies forward reaction rate.
Since it is exothermic reaction, wouldn't increasing the temperature increase the backward reaction rate?

This is a trick many students fall for. Increasing the temperature increases both forward and backward rates, but due to the equilibrium position, it would increase the rate of the backward reaction by a relatively larger amount.
 
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Wouldn't a lower temperature increase the rate of the forward reaction since it's exothermic? So why is it A instead of D??
 

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The question states that vigorous effervescence occurred, so naturally I would opt for C, because Barium is the most reactive element amongst the other choices.
but isn't it that barium forms the most stable compounds and so they might not decompose on heating under a bunsen burner..through this logic I eliminated C at first :whistle:
 
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