Respuesta :
Answer: The correct answer is [tex]Ca(NO_3)_2(s)\rightarrow Ca^{2+}(aq.)+2NO_3^-(aq.)[/tex]
Explanation:
A strong electrolyte is defined as the electrolyte which completely dissociates into its ions when dissolved in water.
A weak electrolyte is defined as the electrolyte which does not completely dissociates into its ions when dissolved in water.
A solution having more number of ions will easily conduct electricity.
For the given chemical equations:
1. [tex]H_3PO_3(aq.)\rightarrow H^+(aq.)+H_2PO_3^-(aq.)[/tex]
It is a weak electrolyte because it is not completely dissociated and number of ions present are 2.
2. [tex]CH_3CH_2COOH(aq.)+H_2O(l)\rightarrow H_3O+(aq.)+CH_3CH_2COO^-(aq.)[/tex]
It is a weak electrolyte because it is not completely dissociated and number of ions present are 2.
3. [tex]CH_3CH_2OH(l)\rightarrow CH_3CH_2OH(aq.)[/tex]
Here, hydration of ethanol is taking place and no ions are present in the solution.
4. [tex]Ca(NO_3)_2(s)\rightarrow Ca^{2+}(aq.)+2NO_3^-(aq.)[/tex]
It is a strong electrolyte because it is has completely dissociated into its ions and number of ions present are 3 and thus it will conduct electricity.
Therefore, the solution which will conduct electricity extremely well will be [tex]Ca(NO_3)_2(s)\rightarrow Ca^{2+}(aq.)+2NO_3^-(aq.)[/tex]
