Respuesta :
Question is complete , here is the complete question:
Which compound produces the greatest number of ions when one mole of it is dissolved in water?
a. NaCl b. [tex]NH_4Cl[/tex] c. [tex]NH_4NO_3[/tex] d. [tex]Na_2SO_4[/tex]
Answer:
The correct answer is option d.
Explanation:
Number of ions : N
[tex]N=n\times N_A=n\times 6.022\times 10^{23}[/tex]
Higher the number of moles of more will be the number of ions.
a) When sodium chloride dissolve in water it gives sodium ions and chloride ions.
[tex]NaCl(aq)\rightarrow Na^{+}(aq)+Cl^-(aq)[/tex]
1 mole gives 1 mole of sodium ions and 1 mole of chloride ions.So, 2 moles of ions are produced.
b) When ammonium chloride dissolve in water it gives ammonium ions and chloride ions.
[tex]NH_4Cl(aq)\rightarrow NH_4^{+}(aq)+Cl^-(aq)[/tex]
1 mole gives 1 mole of ammonium ions and 1 mole of chloride ions.So, 2 moles of ions are produced.
c) When ammonium nitrate dissolve in water it gives sodium ions and chloride ions.
[tex]NH_4NO_3(aq)\rightarrow NH_4^{+}(aq)+NO_3^{-}(aq)[/tex]
1 mole gives 1 mole of ammonium ions and 1 mole of nitrate ions.So, 2 moles of ions are produced.
d) When sodium sulfate dissolve in water it gives sodium ions and chloride ions.
[tex]NaSO_4(aq)\rightarrow 2Na^{+}(aq)+SO_4^{2-}(aq)[/tex]
1 mole gives 2 mole of sodium ions and 1 mole of sulfate ions ions.So, 3 moles of ions are produced.
Number of moles of ions dissolving of 1 mole of sodium sulfate in water is maximum and so will be the number of ions.Hence option d is correct.
