Answer:
Tin (IV) sulfide and antimony (III) sulfide be separated from copper (II) sulfide and bismuth (III) sulfide by the addition of sodium hydroxide because they become soluble whereas copper (II) sulfide and bismuth (III) sulfide remain insoluble.
Explanation:
Sodium hydroxide is a basic solution which is used as a precipitating agent for metallic ions in the laboratory.
<em>When a solution containing a mixture of the sulfides of the Group II cations, antimony (III), copper (II), tin (IV), and bismuth (III), is made basic by the addition of a base such as sodium hydroxide or ammonium hydroxide, the sulfide ion concentration will increase. The sulfides of antimony (III) and tin (IV) will then become soluble because antimony (III) and tin (IV) form stable complexes with sulfide, which are soluble in water, while the sulfides of copper (II) and bismuth (III) do not.</em> The result is the dissolution of the antimony (III) sulfide and tin (IV) sulfide, separating them from the copper (II) sulfide and the bismuth (III) sulfide.
Sb₂S₃(s) + 3S²⁻(aq) ----> 2SbS₃³⁻(aq)
SnS₂(s) + S²⁻(aq) ----> SnS₃³⁻(aq)
Answer:
The correct answer is option B.
Explanation:
Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.
The equation for the ionization of the magnesium hydroxide is given as:
xS yS
Here, S = concentration of compound dissolved in solvent via dissociation
Expression for the solubility product of 
will be:
![K_{sp}=[A^{y+}]^x[B^{x-}]^y\\\\K_{sp}=(xS)^x\times (yS)^y](https://tex.z-dn.net/?f=K_%7Bsp%7D%3D%5BA%5E%7By%2B%7D%5D%5Ex%5BB%5E%7Bx-%7D%5D%5Ey%5C%5C%5C%5CK_%7Bsp%7D%3D%28xS%29%5Ex%5Ctimes%20%28yS%29%5Ey)
As we can see,
![K_{sp}\propto [S]](https://tex.z-dn.net/?f=K_%7Bsp%7D%5Cpropto%20%5BS%5D)
- Higher the value of [S] more will be solubility of compound in a solvent.Hence, more soluble it will be.
- Lower the value of [S] less will be solubility of compound in a solvent.Hence, less soluble it will be.
Hence, the correct answer is option B.
Analyze starlight transmitted to earth
Answer:
petroleum, a fossil fuel, is extracted from the earth and mechanically transformed into fibers for clothing.
Explanation:
synthetic materials, like polyester, nylon and acrylic, don't exist naturally but are made in factories. Synthetics are created through an industrial manufacturing process in which
Answer:
a liter is larger, hope that helps :)
