What is the molar solubility of calcium hydroxide?
What is the molar solubility of calcium hydroxide?
The molar solubility of Ca(OH)2 in pure water is 0.011 M.
How do you calculate the solubility of calcium hydroxide?
1 Answer
- Ca(OH)₂(s) ⇌ Ca²⁺(aq) + 2OH⁻(aq) I/mol·L⁻¹: -; 0; 0. C/mol·L⁻¹: -; + x ; + 2x. E/mol·L⁻¹: -; x ; 2x.
- Ksp = [Ca²⁺][ OH⁻]² = x×(2x)2=4×3 = 5.5 × 10⁻⁶
- x3 = 1.375 × 10⁻⁶ (2 significant figures + 2 guard digits)
- x = ∛(1.375 ×10⁻⁶) = 1.1 × 10⁻²
- Solubility = x mol/L = 1.1 × 10⁻² mol/L = 0.011 mol/L.
What is the solubility product of calcium hydroxide?
Calcium hydroxide
| Names | |
|---|---|
| Solubility in water | 1.89 g/L (0 °C) 1.73 g/L (20 °C) 0.66 g/L (100 °C) (retrograde solubility, i.e., unusually decreasing with T) |
| Solubility product (Ksp) | 5.02×10−6 |
| Solubility | Soluble in glycerol and acids. Insoluble in alcohol. |
| Basicity (pKb) | 1.37 (first OH−), 2.43 (second OH−) |
How is molar solubility related to KSP?
A substance’s solubility product (Ksp) is the ratio of concentrations at equilibrium. Molar solubility, which is directly related to the solubility product, is the number of moles of the solute that can be dissolved per liter of solution before the solution becomes saturated.
What is the molar mass of caoh2?
74.093 g/mol
Calcium hydroxide/Molar mass
How do you calculate solubility from solubility?
In this case, we calculate the solubility product by taking the solid’s solubility expressed in units of moles per liter (mol/L), known as its molar solubility. The concentration of Ca2+ in a saturated solution of CaF2 is 2.1 × 10–4 M; therefore, that of F– is 4.2 × 10–4 M, that is, twice the concentration of Ca2+.
Is molar solubility the same as solubility?
They differ only in the units used to measure them. Solubility is the amount of solute that can dissolve in a given amount of solvent before the solution becomes saturated. Molar solubility is the number of moles of the solute that can dissolve per litre of solution before the solution becomes saturated.
Is molar solubility the same as molarity?
Molar solubility, which is directly related to the solubility product, is the number of moles of the solute that can be dissolved per liter of solution before the solution becomes saturated. The units are molarity (M), or mole liter-1 (mol/L).
How is molar solubility related to Ksp?
What increases molar solubility?
Solubility is affected by multiple factors. Solids becomes more soluble as temperature increases. As pressure increases, gases become more soluble. The common-ion effect describes a decrease in solubility of an ionic compound when the solution already contains an ion that is the same as one from the compound.
