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Chapter 4: Q13E (page 216)

Indicate what type or types of reaction each of the following represents:

(a) \(\)\(Ca\left( s \right) + B{r_2}\left( l \right) \to CaB{r_2}\left( s \right)\)

(b) \(Ca{\left( {OH} \right)_2} + 2HBr\left( {aq} \right) \to CaB{r_2}\left( {aq} \right) + 2{H_2}O\left( l \right)\)

(c) \({C_6}{H_{12}}\left( l \right) + 9{O_2}\left( g \right) \to 6C{O_2}\left( g \right) + 6{H_2}O\left( l \right)\)\(\)

Short Answer

Expert verified

(a) Oxidation-reduction reaction

(b) Acid-base reaction

(c) Oxidation-reduction reaction (combustion)

Step by step solution

01

Oxidation-reduction reaction (a)

The calcium atom is oxidized from 0 to +2 state by the liquid bromine, while bromine is reduced from 0 to -1 state. Hence, it is anoxidation-reduction (redox) reaction.

02

Neutralisation reaction (b)

There is a transfer of hydrogen and hydroxyl ions between the reactants to form calcium bromide salt and water. Hence, it is an acid-base neutralization reaction.

03

Combustion reaction(c)

The carbon is oxidized from -2 to +4 state and the oxygen is reduced from 0 to -2 state. Hence, it is anoxidation-reduction (redox) reaction.

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Most popular questions from this chapter

Classify the following as acid-base reaction or oxidation-reduction reactions.

(a)\(N{a_2}S\left( {aq} \right) + 2HCl\left( {aq} \right) \to 2NaCl\left( {aq} \right) + {H_2}S\left( g \right)\)

(b)\(2Na\left( s \right) + 2HCl\left( {aq} \right) \to 2NaCl\left( {aq} \right) + {H_2}\left( g \right)\)

(c)\(Mg\left( s \right) + C{l_2}\left( g \right) \to MgC{l_2}\left( s \right)\)

(d)\(MgO\left( s \right) + 2HCl\left( {aq} \right) \to MgC{l_2}\left( {aq} \right) + {H_2}O\left( l \right)\)

(e)\({K_3}P\left( s \right) + 2{O_2}\left( g \right) \to {K_3}P{O_4}\left( s \right)\)

(f)\(3KOH\left( {aq} \right) + {H_3}P{O_4}\left( {aq} \right) \to {K_3}P{O_4}\left( {aq} \right) + 3{H_2}O\left( l \right)\)

Potatoes can be peeled commercially by soaking them in a 3-M to 6-M solution of sodium hydroxide, then removing the loosened skins by spraying them with water. Does a sodium hydroxide solution have a suitable concentration if titration of 12.00 mL of the solution requires 30.6 mL of 1.65 M HCI to reach the end point?

What volume of a 0.3300-M solution of sodium hydroxide would be required to titrate 15.00 mL of 0.1500 M oxalic acid?

\({{\rm{C}}_2}{{\rm{O}}_4}{{\rm{H}}_{2({\rm{aq}})}}{\rm{ + 2NaO}}{{\rm{H}}_{({\rm{aq}})}}{\rm{ }} \to {\rm{ N}}{{\rm{a}}_2}{{\rm{C}}_2}{{\rm{O}}_{4({\rm{aq}})}}{\rm{ + 2}}{{\rm{H}}_2}{{\rm{O}}_{({\rm{l}})}}\)

Determine the oxidation states of the elements in the compounds listed. None of the oxygen-containing compounds are peroxides or superoxides.

(a)\({H_3}P{O_4}\)

(b)\(Al{\left( {OH} \right)_3}\)

(c)\(Se{O_2}\)

(d)\(KN{O_2}\)

(e)\(I{n_2}{S_3}\)

(f)\({P_4}{O_6}\).

A sample of solid calcium hydroxide, Ca(OH)2is allowed to stand in water until a saturated solution is formed. A titration of 75.00 mL of this solution with 5.00×10-2M HCl requires 36.6 mL of the acid to reach the end point.

\({\rm{Ca(OH}}{{\rm{)}}_{2({\rm{aq}})}}{\rm{ + 2HC}}{{\rm{l}}_{({\rm{aq}})}}{\rm{ }} \to {\rm{ CaC}}{{\rm{l}}_{2({\rm{aq}})}}{\rm{ + 2}}{{\rm{H}}_2}{{\rm{O}}_{({\rm{l}})}}\)

What is the molarity?
See all solutions

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