Upon dissolving InCl(s) in HCl, In⁺(aq) undergoes a disproportionation reaction according to the following unbalanced equation:

This disproportionation follows first-order kinetics with a half-life of 667 s. What is the concentration of In1(aq) after 1.25 h if the initial solution of In+(aq) was prepared by dissolving 2.38 g InCl(s) in dilute HCl to make 5.00 × 10² mL of solution? What mass of In(s) is formed after 1.25 h?  

Transcribed Image Text:

In(aq) →→→→→→In(s) + In³+ (aq)