The equation In + 3HCl -> InCl3 + H2

  1. Detailed information about the equation In + 3HCl -> InCl3 + H2
    This is a chemical equation describing the reaction between indium (In) and hydrochloric acid (HCl) to form indium(III) chloride (InCl3) and hydrogen (H2). In this reaction, one mol of indium reacts with three mols of HCl to produce one mol of InCl3 and one mol of H2.

  2. Reaction conditions
    The reaction usually occurs under normal pressure and temperature conditions. However, the reaction rate can increase as the temperature rises.

  3. Reaction process
    When indium is added to a solution of HCl, it is oxidized from an oxidation state of 0 to an oxidation state of +3, while the H+ ion from HCl is reduced from an oxidation state of +1 to 0, forming hydrogen gas. The result is the formation of indium(III) chloride and hydrogen gas.

  4. Occurring phenomena
    During the reaction process, indium gradually melts in the HCl solution, forming a yellow solution of InCl3 and bubbles of hydrogen gas are released.

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