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Chapter 18: Q24E (page 1040)

What is the common ore of tin and how is tin separated from it?

Short Answer

Expert verified

The most common tin ore is cassiterite.Tin is purified by heating the ore with coal.

Step by step solution

01

Ore

An ore is a material that has a solid structure and can occurnaturally in nature. Ores help in the extraction of metals/minerals. since different ores have different high concentrations of specific elements.

02

Separation of tin from its ore

The most common ore of tin (Sn) is cassiterite, having a chemical formula of \({\bf{Sn}}{{\bf{O}}_{\bf{2}}}\).

Tin ispurified by heating the ore with coal, which is a process known from ancient times. In modern history, anore is first roasted to remove arsenic, sulfur, and some volatile oxides, while the remaining materials are treated with \({\rm{HCl}}\) after the reaction removes oxides of other metals.

The complete reaction is:

\({\rm{Sn}}{{\rm{O}}_2}(s)\overset{▲}{\rightarrow} + 2C(s)Sn(s) + 2CO(g).\)

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Most popular questions from this chapter

Although \(P{F_5}\) and \(AS{F_5}\) are stable, nitrogen does not form \(N{F_5}\)molecules. Explain this difference among members of the same group.

Determine the oxidation number of each element in each of the following compounds:

(a) \({\bf{HCN}}\)

(b) \(O{F_2}\)

(c) \(AsC{l_3}\)

How many grams of gaseous ammonia will the reaction of 3.0 g hydrogen gas and 3.0 g of nitrogen gas produce?

The reaction of quicklime,\({\rm{CaO}}\), with water produces slaked lime, \({\rm{Ca}}{({\rm{OH}})_2}\), which is widely used in the construction industry to make mortar and plaster. The reaction of quicklime and water is highly exothermic: \({\rm{CaO}}(s) + {{\rm{H}}_2}{\rm{O}}(l) \to {\rm{Ca}}{({\rm{OH}})_2}(s)\;\;\;\Delta H = - 350\;{\rm{kJ}}\;{\rm{mo}}{{\rm{l}}^{ - 1}}\)

(a) What is the enthalpy of reaction per gram of quicklime that reacts?

(b) How much heat, in kilojoules, is associated with the production of 1 ton of slaked lime?

Why is boron limited to a maximum coordination number of four in its compounds?
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