Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Ba(OH)₂, or barium hydroxide, is a strong base that dissociates completely in water to produce barium ions (Ba²⁺) and hydroxide ions (OH⁻). It is commonly used in chemical reactions and laboratory procedures.
Related terms
Barium ion (Ba²⁺): A positively charged particle formed when barium hydroxide donates its hydroxide ion to water.
Hydroxide ion (OH⁻): A negatively charged particle consisting of one oxygen atom bonded with one hydrogen atom. It acts as a base by accepting protons from acids.
Strong base: A base that fully dissociates into its constituent ions when dissolved in water.