Question

1. given the balanced equation representing a reaction: zn(s) + h₂so₄(aq) → znso₄(aq) + h₂(g) which type of reaction is represented by this equation? a. decomposition b. double replacement c. single replacement d. synthesis 9. given the balanced equations representing two chemical reactions: cl₂ + 2nabr → 2nacl + br₂ 2nacl → 2na + cl₂ which types of chemical reactions are represented by these equations? a. single replacement and decomposition b. single replacement and double replacement c. synthesis and decomposition d. synthesis and double replacement 10. in which type of chemical reaction do two or more reactants combine to form one product, only? a. synthesis b. decomposition c. single replacement d. double replacement 11. given the reaction mg(s) + 2agno₃(aq) → mg(no₃)₂(aq) + 2ag(s) which type of reaction is represented? a. single replacement b. double replacement c. synthesis d. decomposition 12. which equation represents a single replacement reaction? a. 2h₂o₂ → 2h₂o + o₂ b. 2h₂ + o₂ → 2h₂o c. h₂so₄ + mg → h₂ + mgso₄ d. hcl + koh → kcl + h₂o 13. base your answer(s) to the following question(s) on the information below. some dry chemicals can be used to put out forest fires. one of these chemicals is nahco₃. when nahco₃(s) is heated, one of the products is co₂(g), as shown in the balanced equation below. 2nahco₃(s) + heat → na₂co₃(s) + h₂o(g) + co₂(g) identify the type of chemical reaction represented by this equation. 14. base your answer(s) to the following question(s) on the information below. rust on an automobile door contains fe₂o₃(s). the balanced equation representing one of the reactions between iron in the door of the automobile and oxygen in the atmosphere is given below. 4fe(s) + 3o₂(g) → 2fe₂o₃(s) identify the type of chemical reaction represented by this equation.

Explanation:

Question 8

Se identifica la reacción de sustitución simple: un elemento metálico (Zn) reemplaza a otro elemento (H) en un compuesto ($H_2SO_4$).

Question 9

La primera ecuación es sustitución simple (Cl reemplaza a Br en NaBr), la segunda es descomposición (un compuesto se divide en sustancias más simples).

Question 10

La síntesis se define como la combinación de dos o más reactivos para formar un solo producto.

Question 11

Un elemento metálico (Mg) reemplaza a otro elemento (Ag) en un compuesto ($AgNO_3$), por lo que es sustitución simple.

Question 12

Se selecciona la ecuación donde un elemento (Mg) reemplaza a otro (H) en un compuesto ($H_2SO_4$), que es la definición de sustitución simple.

Question 13

Un solo compuesto ($NaHCO_3$) se descompone en tres sustancias más simples, por lo que es una reacción de descomposición.

Question 14

Dos reactivos (Fe y $O_2$) se combinan para formar un solo producto ($Fe_2O_3$), por lo que es una reacción de síntesis.

Answer:

1. C. single replacement
2. A. single replacement and decomposition
3. A. synthesis
4. A. single replacement
5. C. $H_2SO_4 + Mg

ightarrow H_2 + MgSO_4$

1. Decomposition reaction
2. Synthesis reaction