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Afternoon Session
Class Activity

1) State whether the following compounds are oxides or not:

a) [tex]Na_2O[/tex]
b) KOH
c) [tex]Ga_2O_3[/tex]
d) [tex]P_4O_6[/tex]
e) [tex]N_2O_4[/tex]
f) [tex]H_2O[/tex]
g) [tex]Na_2CO_3[/tex]
h) [tex]KNO_3[/tex]
i) [tex]H_2SO_4[/tex]

2) Write chemical equations to show the amphoteric nature of zinc oxide (ZnO).

3) Classify the following oxides as acidic or basic:

Sagot :

GinnyAnsweridn
### Class Activity

#### 1. State whether the following compounds are oxides or not:

a) [tex]\( \text{Na}_2\text{O} \)[/tex]
- Answer: Oxide

b) [tex]\( \text{KOH} \)[/tex]
- Answer: Not Oxide

c) [tex]\( \text{Ga}_2\text{O}_3 \)[/tex]
- Answer: Oxide

d) [tex]\( \text{P}_4\text{O}_6 \)[/tex]
- Answer: Oxide

e) [tex]\( \text{N}_2\text{O}_4 \)[/tex]
- Answer: Oxide

f) [tex]\( \text{H}_2\text{O} \)[/tex]
- Answer: Oxide

g) [tex]\( \text{Na}_2\text{CO}_3 \)[/tex]
- Answer: Not Oxide

h) [tex]\( \text{KNO}_3 \)[/tex]
- Answer: Not Oxide

i) [tex]\( \text{H}_2\text{SO}_4 \)[/tex]
- Answer: Not Oxide

#### 2. Write chemical equations to show the amphoteric nature of zinc oxide (ZnO):

- ZnO acting as a base (reacting with acids):
[tex]\[ \text{ZnO} + 2\text{HCl} \rightarrow \text{ZnCl}_2 + \text{H}_2\text{O} \][/tex]

- ZnO acting as an acid (reacting with bases):
[tex]\[ \text{ZnO} + 2\text{NaOH} + \text{H}_2\text{O} \rightarrow \text{Na}_2[\text{Zn(OH)}_4] \][/tex]

#### 3. Classify the following oxides as acidic, basic, amphoteric, or neutral:

- [tex]\( \text{Na}_2\text{O} \)[/tex]
- Classification: Basic

- [tex]\( \text{KOH} \)[/tex]
- Classification: Basic

- [tex]\( \text{Ga}_2\text{O}_3 \)[/tex]
- Classification: Amphoteric

- [tex]\( \text{P}_4\text{O}_6 \)[/tex]
- Classification: Acidic

- [tex]\( \text{N}_2\text{O}_4 \)[/tex]
- Classification: Acidic

- [tex]\( \text{H}_2\text{O} \)[/tex]
- Classification: Neutral

- [tex]\( \text{Na}_2\text{CO}_3 \)[/tex]
- Classification: Basic

- [tex]\( \text{KNO}_3 \)[/tex]
- Classification: Neutral

- [tex]\( \text{H}_2\text{SO}_4 \)[/tex]
- Classification: Acidic
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