CH-1025
Reactions of acids
Chemistry · Secondary 4 · Easy · Reactions of acids
A student adds excess dilute hydrochloric acid to solid sodium carbonate.
Which observation is mainly due to the formation of carbon dioxide gas?
Which observation is mainly due to the formation of carbon dioxide gas?
- A white precipitate forms.
- Effervescence is observed.
- The solution turns purple.
- The mixture becomes cold.
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