<u>A solution of NaF is added to a solution that is 0.0144 M in Ba²⁺. When the concentration of F- exceeds </u><u>0.011 m, BaF₂</u><u> will precipitate.</u>
Let's consider the solution of BaF₂.
BaF₂(s) ⇄ Ba²⁺(aq) + 2 F⁻(aq)
We can use the solubility product constant (Ksp) to find the equilibrium concentration of F⁻ when [Ba²⁺] is 0.0144 M.
When [F⁻] exceeds 0.011 M, BaF₂ will precipitate.
A solution of NaF is added to a solution that is 0.0144 M in Ba²⁺. When the concentration of F- exceeds 0.011 M, BaF₂ will precipitate.
What is BaF₂.?
- BaF2 crystallizes in the cubic Fm3m space group and has a fluorite structural makeup.
- Eight comparable F1 atoms and Ba2+ are joined in a cubic shape with the body in the middle. The average Ba-F bond length is 2.72.
- Four comparable Ba2+ atoms are joined with F1 to create a mixture of corner- and edge-sharing FBa4 tetrahedra.
Learn more about BaF2 crystallizes
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Answer:
Extraction of aluminium
Aluminium ore is called bauxite . The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it.
Answer:
Reactions of sodium with water and dilute acid
Sodium reacts explosively with dilute HCl(aq) to produce NaCl(aq) and H₂(g)
2Na (s) + 2HCl(aq) → 2NaCl(aq) + H₂(g)
Sodium reacts violently with cold water to produce NaOH(aq) and H₂(g)
2Na (s) + H₂O(l) → 2Na(OH)(aq) + H₂(g)
The produced hydrogen may become ignited and explode
Reactions of iron with water and dilute acid
Iron reacts very slowly with dilute acid to produce iron (II) chloride and hydrogen gas
Fe (s) + 2 HCl (aq) → FeCl₂ (aq) + H₂ (g)
Iron does not react with cold water. Iron reacts only with steam
Explanation:
Answer:
A. in the cells of autotrophs
Explanation:
Photosynthesis takes place in the cells of autotrophs. Autotrophs are capable of manufacturing their own food by two major means which is by photosynthesis or by chemosynthesis.
- In photosynthesis green plants manufacture their foods using sunlight to synthesize energy rich compounds from carbon dioxide and water.
- The product is often times glucose and oxygen gas.
Heterotrophs on the other hand depends on the food manufactured by the autotrophs for their nourishment