The order of reactivity of five metals is \(P > Q > R > S\) \(> T\). Which of the following reactions can occur spontaneously?
A. \(T+P^{+} \rightarrow T^{+}+P\) B. \(Q+T^{+} \rightarrow Q^{+}+T\) C. \(R+Q^{+} \rightarrow R^{+}+Q\) D. \(T+R^{+} \rightarrow T^{+}+R\)
Correct Answer: B
Explanation
A metal will spontaneously displace any metal that is in ferior to it from its solution. Note that: \(P>Q>S>T\). \(Q+T \rightarrow Q^{+}+T\) The interpretation of this is that \(Q\) has displaced T from its solution. How? See the shift from \(T^{+}\)to \(T\), it indicates that \(T+\) has moved out of its solution, WHY? It is because \(Q>T\).
