Question

part 3: acids

1. an acid is a substance that produces _ ions (h+) in solution.
2. acids form _ ions when dissolved in water. example: hcl + h2o → h3o+ + _
3. properties of acids: 1. taste _ 2. conduct _ 3. _ - can eat away metals
4. litmus paper turns _ in an acid.
5. common acids can be found in _ fruits, the _ batteries, and cleaners.

Explanation:

1. According to the definition of acids, they produce hydrogen ($H^{+}$) ions in solution. For the reaction $HCl + H_{2}O

ightarrow H_{3}O^{+}+Cl^{-}$, the missing ion is $Cl^{-}$.

1. When acids dissolve in water, they form hydronium ($H_{3}O^{+}$) ions.
2. Properties of acids:

• They taste sour.
• They conduct electricity (due to the presence of ions in solution).
• They are corrosive (can eat away metals).

1. Litmus paper turns red in an acid.
2. Common acids can be found in citrus fruits (e.g., citric acid in oranges), car batteries (sulfuric acid), and cleaners (e.g., hydrochloric acid in some toilet - bowl cleaners).

Answer:

1. hydrogen; $Cl^{-}$
2. hydronium
3. sour; electricity; corrosive
4. red
5. citrus; car