Write balanced equations for the following reactions.
Express your answer as a chemical equation. Identify all of the phases in your answer.
1. chromium (III) oxide with dilute hydrochloric acid
A: Cr2O3 (s) + 6HCl (aq) ---> 2CrCl3 (s) + 3H20(l)
(my phases are wrong?)
CrCl3 is soluble and should be written as CrCl3(aq). The others look ok to me.
The given balanced equation for the reaction between chromium (III) oxide and dilute hydrochloric acid is incorrect in terms of the phases of the reactants and products. To properly write the balanced equation, we need to correctly include the phase symbols for each substance.
Chromium (III) oxide is a solid, so we represent it by "(s)" in the equation. Dilute hydrochloric acid is an aqueous solution, so we represent it by "(aq)" in the equation. The products, chromium (III) chloride and water, also require the correct phase symbols.
Here is the correct balanced equation for the reaction:
Cr2O3(s) + 6HCl(aq) → 2CrCl3(aq) + 3H2O(l)
In this equation, (s) represents solid, (aq) represents aqueous, and (l) represents liquid.