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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Balance the following equations, and name each reactant and product:

(a) Fe2O3(s) + Mg(s) → MgO(s) + Fe(s)

(b) AlC13(s) + NaOH(aq) → Al(OH)3(s) + NaCl(aq)

(c) NaNO3(s) + H2SO4(aq) →Na2SO4(S) HNO3(aq)

(d) NiCO3(s) + HNO3(aq) → Ni(NO3)2(aq) + CO2(g) + H2O()

(a)

Interpretation Introduction

Interpretation:

The balanced equation and name of the reactant and product should be given.

Concept introduction:

The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, therefore, the number of atoms present in the reactants is equal to the number of atoms present in the products.

Explanation

Iron (III) oxide reacts with magnesium which yields the magnesium oxide and iron, the unbalanced equation is given below using correct molecular formula,

  

Balance the iron atom in the given equation, when balancing the equation, we should not alter the subscripts and we can change coefficients.  There is two iron atom in the left side and one iron in the right side.  Two molecule of iron atom is added to the right side of the reaction.  Therefore according to the iron atom the balanced equation is given below.

  

Next, balance the oxygen atom in the equation, there are three oxygen atom in the left side.  For the balancing the oxygen atom, three molecules of magnesium oxide is added to the left side of the reaction.  Therefore the balanced equation is given below

  

(b)

Interpretation Introduction

Interpretation:

The balanced equation and name of the reactant and product should be given.

Concept introduction:

The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, therefore, the number of atoms present in the reactants is equal to the number of atoms present in the products.

(c)

Interpretation Introduction

Interpretation:

The balanced equation and name of the reactant and product should be given.

Concept introduction:

The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, therefore, the number of atoms present in the reactants is equal to the number of atoms present in the products.

(d)

Interpretation Introduction

Interpretation:

The balanced equation and name of the reactant and product should be given.

Concept introduction:

The law of conservation of mass states that no atoms can be created or destroyed in a chemical reaction, therefore, the number of atoms present in the reactants is equal to the number of atoms present in the products.

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