Question

types of reaction practice
please label the type of reaction using the following abbreviation:
s\tsynthesis\tdr\tdouble replacement
d\tdecomposition\tc\tcombustion
sr\tsingle replacement\t\t

______ 1. 4na + o₂ → 2na₂o
______ 2. 2h₂o → 2h₂ + o₂
______ 3. sb₂s₃ + 6hcl → 2sbcl₃ + 3h₂s
______ 4. 2c₂h₆ + 7o₂ → 6h₂o + 4co₂
______ 5. cl₂ + 2kbr → br₂ + 2kcl
______ 6. kclo₄ → kcl + 2o₂
______ 7. h₂ + cl₂ → 2hcl
______ 8. 2al₂o₃ + 3c → 4al + 3co₂
______ 9. 2c₂h₅cooh + 7o₂ → 6co₂ + 6h₂o
______ 10. 3mncl₂ + 2al → 3mn + 2alcl₃
______ 11. 2naclo₃ → 2nacl + 3o₂
______ 12. 2cu + s → cu₂s
______ 13. 2kno₃ + h₂co₃ → k₂co₃ + 2hno₃
______ 14. nh₄no₂ → n₂ + 2h₂o
______ 15. n₂ + o₂ → n₂o₂
______ 16. cuo + 2hcl → cucl₂ + h₂o

Explanation:

Step1: Identify Reaction Type for 1

The reaction \(4\text{Na} + \text{O}_2
ightarrow 2\text{Na}_2\text{O}\) combines two substances to form one, so it's synthesis (S).

Step2: Identify Reaction Type for 2

The reaction \(2\text{H}_2\text{O}
ightarrow 2\text{H}_2 + \text{O}_2\) breaks one substance into two, so it's decomposition (D).

Step3: Identify Reaction Type for 3

The reaction \(\text{Sb}_2\text{S}_3 + 6\text{HCl}
ightarrow 2\text{SbCl}_3 + 3\text{H}_2\text{S}\) has ions swapping, so it's double replacement (DR).

Step4: Identify Reaction Type for 4

The reaction \(2\text{C}_2\text{H}_6 + 7\text{O}_2
ightarrow 6\text{H}_2\text{O} + 4\text{CO}_2\) is a hydrocarbon reacting with oxygen, so it's combustion (C).

Step5: Identify Reaction Type for 5

The reaction \(\text{Cl}_2 + 2\text{KBr}
ightarrow \text{Br}_2 + 2\text{KCl}\) has one element replacing another, so it's single replacement (SR).

Step6: Identify Reaction Type for 6

The reaction \(\text{KClO}_4
ightarrow \text{KCl} + 2\text{O}_2\) breaks one substance into two, so it's decomposition (D).

Step7: Identify Reaction Type for 7

The reaction \(\text{H}_2 + \text{Cl}_2
ightarrow 2\text{HCl}\) combines two substances to form one, so it's synthesis (S).

Step8: Identify Reaction Type for 8

The reaction \(2\text{Al}_2\text{O}_3 + 3\text{C}
ightarrow 4\text{Al} + 3\text{CO}_2\) has one element replacing another (C replacing O in \(\text{Al}_2\text{O}_3\)), so it's single replacement (SR).

Step9: Identify Reaction Type for 9

The reaction \(2\text{C}_2\text{H}_5\text{COOH} + 7\text{O}_2
ightarrow 6\text{CO}_2 + 6\text{H}_2\text{O}\) is a hydrocarbon - like compound reacting with oxygen, so it's combustion (C).

Step10: Identify Reaction Type for 10

The reaction \(3\text{MnCl}_2 + 2\text{Al}
ightarrow 3\text{Mn} + 2\text{AlCl}_3\) has one element replacing another, so it's single replacement (SR).

Step11: Identify Reaction Type for 11

The reaction \(2\text{NaClO}_3
ightarrow 2\text{NaCl} + 3\text{O}_2\) breaks one substance into two, so it's decomposition (D).

Step12: Identify Reaction Type for 12

The reaction \(2\text{Cu} + \text{S}
ightarrow \text{Cu}_2\text{S}\) combines two substances to form one, so it's synthesis (S).

Step13: Identify Reaction Type for 13

The reaction \(2\text{KNO}_3 + \text{H}_2\text{CO}_3
ightarrow \text{K}_2\text{CO}_3 + 2\text{HNO}_3\) has ions swapping, so it's double replacement (DR).

Step14: Identify Reaction Type for 14

The reaction \(\text{NH}_4\text{NO}_2
ightarrow \text{N}_2 + 2\text{H}_2\text{O}\) breaks one substance into two, so it's decomposition (D).

Step15: Identify Reaction Type for 15

The reaction \(\text{N}_2 + \text{O}_2
ightarrow \text{N}_2\text{O}_2\) combines two substances to form one, so it's synthesis (S).

Step16: Identify Reaction Type for 16

The reaction \(\text{CuO} + 2\text{HCl}
ightarrow \text{CuCl}_2 + \text{H}_2\text{O}\) has ions swapping (H⁺ and Cu²⁺, Cl⁻ and O²⁻), so it's double replacement (DR).

Answer:

1. S
2. D
3. DR
4. C
5. SR
6. D
7. S
8. SR
9. C
10. SR
11. D
12. S
13. DR
14. D
15. S
16. DR