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Chapter 4: Q14E (page 216)

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

(a) \({H_2}O\left( g \right) + C\left( s \right) \to CO\left( g \right) + {H_2}\left( g \right)\)

(b) \(2KCl{O_3}\left( s \right) \to 2KCl\left( s \right) + 3{O_2}\left( g \right)\)

(c) \(Al{\left( {OH} \right)_3}\left( {aq} \right) + 3HCl\left( {aq} \right) \to AlC{l_3}\left( {aq} \right) + 3{H_2}O\left( l \right)\)

(d) \(Pb\left( {N{O_3}} \right)\left( {aq} \right) + {H_2}S{O_4}\left( {aq} \right) \to PbS{O_4}\left( s \right) + 2HN{O_3}\left( {aq} \right)\)

Short Answer

Expert verified

(a) Oxidation-reduction reaction

(b) Oxidation-reduction reaction

(c) Acid-base reaction

(d) Precipitation reaction.

Step by step solution

01

Oxidation–reduction reaction (a)

Carbon is oxidised from 0 to +2 state and hydrogen is reduced from +1 to 0 oxidation state.

02

Oxidation–reduction reaction (b)

Here oxygen is oxidised from -2 to 0 oxidation state and chlorine is reduced from +5 to -1 oxidation state. The reaction is called decomposition reaction.

03

Acid-base reaction (c)

Here the transfer of hydrogen and hydroxyl ions between reactants happens, leading to the formation of aluminium chloride and water.

04

Precipitation reaction (d)

The ions replace and form an insoluble product, lead sulfate. Hence the reaction is called a double displacement reaction.

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Most popular questions from this chapter

Use the following equations to answer the next four questions:

i.\({H_2}O\left( s \right) \to {H_2}O\left( l \right)\)

ii.\(N{a^ + }\left( {aq} \right) + C{l^ - }\left( {aq} \right) + A{g^ + }\left( {aq} \right) + NO_3^ - \left( {aq} \right) \to AgCl\left( s \right) + N{a^ + }\left( {aq} \right) + NO_3^ - \left( {aq} \right)\)

iii.\(C{H_3}OH\left( g \right) + {O_2}\left( g \right) \to C{O_2}\left( g \right) + {H_2}O\left( g \right)\)

iv. \(2{H_2}O\left( l \right) \to 2{H_2}\left( g \right) + {O_2}\left( g \right)\)

v. \({H^ + }\left( {aq} \right) + O{H^ - }\left( {aq} \right) \to {H_2}O\left( l \right)\)

(a) Which equation describes a physical change?

(b)Which equation identifies the reactants and products of a combustion reaction?

(c)Which equation is not balanced?

(d)Which is a net ionic equation?

Outline the steps needed to determine the limiting reactant when 0.50 mol of Cr and 0.75 mol of H3PO4 react according to the following chemical equation.\(2Cr + 2{H_3}P{O_4} \to 2CrP{O_4} + 3{H_2}\). Determine the limiting reactant.

What volume of 0.0105-M HBr solution is required to titrate 125 mL of a 0.0100-MCa(OH)2 solution?

Ca(OH)2(aq) + 2HBr(aq)鉄禖补叠谤2(aq) + 2H2 O(l)

Determine the oxidation state of the elements in the following compounds:

(a)\(NaI\)

(b)\(GdC{l_3}\)

(c)\(LiN{O_3}\)

(d)\({H_2}Se\)

(e)\(M{g_2}Si\)

(f)\(Rb{O_2}\), rubidium superoxide

(g)\(HF\)

Assign oxidation state to elements whose atoms are underlined in each of the following compounds or ions:

  1. KNO3
  2. AlH3
  3. NH4+
  4. H2PO4-
See all solutions

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