Barium Hydroxide

Ba(OH)₂

IUPAC: Barium hydroxide

CAS: 17194-00-2

Overview

Barium hydroxide is a strong base used in analytical chemistry and organic synthesis. Its reaction with ammonium salts is famously endothermic.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 2 1.0080
Oxygen O 2 15.9990
Barium Ba 1 137.3300

Elemental Composition

H
Hydrogen ×2
1.2%
O
Oxygen ×2
18.7%
Ba
Barium ×1
80.2%

Uses

  • • Analytical chemistry
  • • Oil additive
  • • Sugar refining

Fun Facts

  • ✦ Mixing Ba(OH)₂ with NH₄SCN creates a reaction so cold it can freeze water beneath the beaker

Safety

  • ⚠ Toxic
  • ⚠ Corrosive
  • ⚠ Barium compounds are poisonous

Structure

SMILES

[OH-].[OH-].[Ba+2]

Properties

Type
base
State
solid
Molar Mass
171.34 g/mol
Density
4.5000 g/cm³
Melting Point
78.0 °C
Boiling Point
780.0 °C
Solubility
56 g/L at 25°C

Molecular Descriptors

Exact Mass
171.9107
TPSA
2.0 Ų
H-Bond Donors
2
H-Bond Acceptors
2
Rotatable Bonds
0
Heavy Atoms
3
Complexity
0.0

Related Compounds

Aluminum Hydroxide

Al(OH)₃

Ammonia

NH₃

Calcium Hydroxide

Ca(OH)₂

Lithium Hydroxide

LiOH

Magnesium Hydroxide

Mg(OH)₂

Potassium Hydroxide

KOH

Sodium Hydroxide

NaOH

Sodium Hydroxide Solution

NaOH(aq)

Frequently Asked Questions

What is Barium Hydroxide?
Barium Hydroxide (Ba(OH)₂) is a base compound with the IUPAC name Barium hydroxide.
What is the molecular weight of Barium Hydroxide?
Barium Hydroxide has a molar mass of 171.34 g/mol.
What state is Barium Hydroxide at room temperature?
Barium Hydroxide is a solid at room temperature.
Is Barium Hydroxide organic or inorganic?
Barium Hydroxide is classified as an inorganic compound.
What elements make up Barium Hydroxide?
Barium Hydroxide (Ba(OH)₂) is composed of Hydrogen (H), Oxygen (O), Barium (Ba).