Question

after eating certain foods, excess acid used to break down those foods can cause a burning sensation in your stomach. this acid can be neutralized by taking an antacid like magnesium hydroxide.
the chemical equation for this reaction is shown below.
mg(oh)₂(s) + 2hcl(aq) → 2h₂o(l) + mgcl₂(aq)
complete the table to show the state of matter for each substance in the equation.
substance\tstate of matter
magnesium hydroxide (mg(oh)₂)\t
hydrochloric acid (hcl)\t
water (h₂o)\t
magnesium chloride (mgcl₂)\t

Explanation:

• In chemical equations, the state symbols have specific meanings.
• \( (s) \) stands for solid. Magnesium hydroxide \( Mg(OH)_2 \) is in solid state as indicated by \( (s) \) in the equation \( Mg(OH)_2(s)+2HCl(aq)\to2H_2O(l) + MgCl_2(aq) \).
• \( (aq) \) stands for aqueous (dissolved in water). Hydrochloric acid \( HCl \) and magnesium chloride \( MgCl_2 \) are in aqueous state as shown by \( (aq) \) in the equation.
• \( (l) \) stands for liquid. Water \( H_2O \) is in liquid state as denoted by \( (l) \) in the equation.

Answer:

• magnesium hydroxide \( (Mg(OH)_2) \): solid
• hydrochloric acid \( (HCl) \): aqueous
• water \( (H_2O) \): liquid
• magnesium chloride \( (MgCl_2) \): aqueous