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Aerlinn

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This question is confusing, because drawing all over the table of standard potentials didnt work.
A student carries out experiments with four reductants, H2, P, Q and R. metal Q reacts with a solution of PSO4 to produce metallic P. gaseous hydrogen will reduce cation R2+ and and one other cation to their repective metals. RSO4 solution will not reaact with metal P. deduce the order of reactivity of the reactants (place the most reactive first). Give reasons for your answer.

Anyone know how to do it? =S
 

xiao1985

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Reactivity:

"metal Q reacts with a solution of PSO4 to produce metallic P"
Q>P

"RSO4 solution will not reaact with metal P"
R>P

"gaseous hydrogen will reduce cation R2+ and and one other cation to their repective metals."

means H > R > ONE other metal

therefore, Q>R>P
 

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