Answered

IDNLearn.com: Where your questions meet expert advice and community insights. Our experts provide accurate and detailed responses to help you navigate any topic or issue with confidence.

Which of the following is a correctly balanced equation?

A. [tex]\(NaClO_3 \rightarrow NaCl + 3 O_2\)[/tex]
B. [tex]\(2 HgO \rightarrow 2 Hg + O_2\)[/tex]
C. [tex]\(2 ZnS + O_2 \rightarrow 2 ZnO + 2 SO_2\)[/tex]
D. [tex]\(4 CO + Fe_3O_4 \rightarrow 4 CO_2 + Fe\)[/tex]
E. [tex]\(2 Fe + 2 Cl_2 \rightarrow 2 FeCl_3\)[/tex]

Sagot :

GinnyAnsweridn
To determine which of the given chemical equations is correctly balanced, we need to compare the number of atoms of each element on the reactant side to the number of atoms on the product side for each equation.

A. [tex]\( \text{NaClO}_3 \rightarrow \text{NaCl} + 3\text{O}_2 \)[/tex]

- Reactants: [tex]\( \text{NaClO}_3 \)[/tex]
- Na: 1
- Cl: 1
- O: 3

- Products: [tex]\( \text{NaCl} + 3\text{O}_2 \)[/tex]
- Na: 1
- Cl: 1
- O: [tex]\(3 \times 2 = 6\)[/tex]

This equation is not balanced because the number of oxygen atoms is not the same on both sides.

B. [tex]\( 2\text{HgO} \rightarrow 2\text{Hg} + \text{O}_2 \)[/tex]

- Reactants: [tex]\( 2\text{HgO} \)[/tex]
- Hg: [tex]\(2 \times 1 = 2\)[/tex]
- O: [tex]\(2 \times 1 = 2\)[/tex]

- Products: [tex]\( 2\text{Hg} + \text{O}_2 \)[/tex]
- Hg: 2
- O: 2

This equation is balanced because the number of atoms of each element is the same on both sides.

C. [tex]\( 2 \text{ZnS} + \text{O}_2 \rightarrow 2\text{ZnO} + 2\text{SO}_2 \)[/tex]

- Reactants: [tex]\( 2 \text{ZnS} + \text{O}_2 \)[/tex]
- Zn: 2
- S: 2
- O: 2

- Products: [tex]\( 2\text{ZnO} + 2\text{SO}_2 \)[/tex]
- Zn: 2
- S: 2
- O: [tex]\( 2+ 2 \times 2 = 6\)[/tex]

This equation is not balanced because the number of oxygen atoms is not the same on both sides.

D. [tex]\( 4\text{CO} + \text{Fe}_3\text{O}_4 \rightarrow 4\text{CO}_2 + \text{Fe} \)[/tex]

- Reactants: [tex]\( 4\text{CO} + \text{Fe}_3\text{O}_4 \)[/tex]
- C: 4
- O: [tex]\( 4 + 4= 8\)[/tex]
- Fe: 3

- Products: [tex]\( 4\text{CO}_2 + \text{Fe} \)[/tex]
- C: 4
- O: [tex]\( 4 \times 2= 8\)[/tex]
- Fe: 1

This equation is not balanced because the number of iron (Fe) atoms is not the same on both sides.

E. [tex]\( 2\text{Fe} + 2\text{Cl}_2 \rightarrow 2\text{FeCl}_3 \)[/tex]

- Reactants: [tex]\( 2\text{Fe} + 2\text{Cl}_2 \)[/tex]
- Fe: 2
- Cl: [tex]\( 2 \times 2= 4 \)[/tex]

- Products: [tex]\( 2\text{FeCl}_3 \)[/tex]
- Fe: 2
- Cl: [tex]\( 2 \times 3= 6 \)[/tex]

This equation is not balanced because the number of chlorine (Cl) atoms is not the same on both sides.

The only correctly balanced equation is therefore:

B. [tex]\( 2\text{HgO} \rightarrow 2\text{Hg} + \text{O}_2 \)[/tex]
We appreciate your presence here. Keep sharing knowledge and helping others find the answers they need. This community is the perfect place to learn together. IDNLearn.com is dedicated to providing accurate answers. Thank you for visiting, and see you next time for more solutions.