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Chapter 18: Q79E (page 1046)

Predict the product of burning francium in air.

Short Answer

Expert verified

Francium oxide is produced when francium is burned in air.

Step by step solution

01

Details of francium

  • In the periodic table, francium (Fr) belongs to group IA. It's a valence electron configuration alkali metal having a valence electron configuration of\(7\;{{\rm{s}}^1}\)
  • Alkali metals are highly electropositive, which means they readily lose valence electrons, making them reactive.
02

Reaction of francium when burning

Then burned, francium rapidly interacts with oxygen to produce francium oxide. The following is a representation of the reaction:

\(4{\rm{Fr}} + {{\rm{O}}_2} \to 2{\rm{F}}{{\rm{r}}_2}{\rm{O}}\)

Therefore, francium oxide is produced when francium is burned in air.

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Most popular questions from this chapter

Phosphoric acid, one of the acids used in some cola drinks, is produced by the reaction of phosphorus (V) oxide, an acidic oxide, with water. Phosphorus (V) oxide is prepared by the combustion of phosphorus.

(a) Write the empirical formula of phosphorus (V) oxide.

(b) What is the molecular formula of phosphorus (V) oxide if the molar mass is about 280.

(c) Write balanced equations for the production of phosphorus (V) oxide and phosphoric acid.

(d) Determine the mass of phosphorus required to make \(1.00 \times {10^4}\;{\rm{kg}}\) of phosphoric acid, assuming a yield of 98.85%.

Silicon reacts with sulfur at elevated temperatures. If \({\bf{0}}.{\bf{0923}}{\rm{ }}{\bf{g}}\) of silicon reacts with sulfur to give \({\bf{0}}.{\bf{3030}}{\rm{ }}{\bf{g}}\) of silicon sulfide, determine the empirical formula of silicon sulfide.

Give the Lewis structure of each of the following:

\(\begin{array}{l}(a){\rm{S}}{{\rm{F}}_4}.\\(b){{\rm{K}}_2}{\rm{S}}{{\rm{O}}_4}.\\(c){\rm{S}}{{\rm{O}}_2}{\rm{C}}{{\rm{l}}_2}.\\(d){{\rm{H}}_2}{\rm{S}}{{\rm{O}}_3}.\\(e){\rm{S}}{{\rm{O}}_3}.\end{array}\)

Which is the stronger acid,\({{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}\)or \({{\rm{H}}_2}{\rm{Se}}{{\rm{O}}_4}\)? Why? You may wish to review the chapter on acid-base equilibrium.

A mixture of Xenon and Flourine was heated. A sample of white solid that formed reacted with hydrogen to yield 81 mL of Xenon (at STP) and hydrogen fluoride , which was collected in water, giving a solution of hydrofluoric acid . The hydrofluoric acid solution was titrated , and 68.43 mL of 0.3172 M of Sodium Hydroxide was required to reach the equivalence point. Determine the empirical formula for the white solid and write balanced chemical equations for the reactions involving xenon .
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