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write the balanced chemical equation for the reaction of aqueous hydrochloric acid with solid manganese (iv) oxide to form aqueous manganese (ii) chloride, liquid water, and chlorine gas.

Respuesta :

theleangreenbean

Key Concepts

  • Writing balanced chemical equations
  • Solubility rules
  • Multivalency
  • Chemical nomenclature

Solution

First, convert the word equation into a chemical equation. Make sure to include the state symbols (aq, s, l, g):

HCl(aq) + MgO₂(s) ⇒ MgCl₂(aq) + H₂O(l) + Cl₂(g)

Next, balance the chemical equation so that both sides have the same number of atoms for each element:

HCl(aq) + MgO₂(s) ⇒ MgCl₂(aq) + H₂O(l) + Cl₂(g)

  • LHS has 1 Cl while RHS has 4 Cl atoms:

4HCl(aq) + MgO₂(s) ⇒ MgCl₂(aq) + H₂O(l) + Cl₂(g)

  • LHS has 4 H while RHS has 2 H atoms:

4HCl(aq) + MgO₂(s) ⇒ MgCl₂(aq) + 2H₂O(l) + Cl₂(g)

Answer

4HCl(aq) + MgO₂(s) ⇒ MgCl₂(aq) + 2H₂O(l) + Cl₂(g)

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