N5 Acids

Front

What does the pH scale indicate?

Back

The hydrogen ion concentration of a solution.

Front

What are the concentrations of ions in a neutral solution?

Back

A neutral solution has equal concentrations of H⁺ (aq) and OHˉ (aq) ions.

Front

What does the ⇌ symbol in a chemical equation indicate?

Back

Reaction is reversible (occurs in both directions).

Front

What is the relative concentration of hydroxide and hydrogen ions in alkaline solutions?

Back

Alkaline solutions have a higher concentration of OHˉ (aq) ions than H⁺ (aq) ions and have a pH above 7.

Front

What is the relative concentration of ions in acidic solutions?

Back

Acidic solutions have a higher concentration of H⁺ (aq) ions than OHˉ (aq) and have a pH below 7.

Front

What happens when an acidic solution is diluted with water?

Back

Decreases the concentration of H⁺ (aq) and the pH increases towards 7.

Front

What happens when an alkaline solution is diluted with water?

Back

Decreases the concentration of OHˉ (aq) and the pH decreases towards 7.

Front

What do soluble non-metal oxides form when dissolved in water?

Back

Acidic solutions.

Front

What do soluble metal oxides form when dissolved in water?

Back

Alkaline solutions.

Front

Name the 3 different compounds that will neutralise acids - these are bases.

Back

Metal oxides, metal hydroxides, metal carbonates.