The salt $\text{NaClO}_3$ is used as a non-selective weedkiller. When it is heated gently, this reaction takes place: $4\text{NaClO}_3 \rightarrow \text{NaCl} + 3\text{NaClO}_4$. Under strong heating, this reaction takes place: $\text{NaClO}_4 \rightarrow \text{NaCl} + 2\text{O}_2$. The overall reaction is $2\text{NaClO}_3 \rightarrow 2\text{NaCl} + 3\text{O}_2$. What do these equations indicate?
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct