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The rates in order of fastest to slowest for this reaction: a 5g of powdered $Mg(s)+2HCl(aq)\rightarrow MgCl_2(aq)+H_2(g)$ are:

S.No Temperature $(^oC)$ Concentration of HCl
1 60 5
2 40 5
3 60 10


$\begin{array}{1 1}(a)\;2,1,3&(b)\;3,1,2\\(c)\;1,2,3&(d)\;2,3,1\end{array}$

1 Answer

If temperature is higher and concentration of reactant is higher then rate would be higher.So (b) is correct answer.
answered Dec 18, 2013 by sreemathi.v

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