Answer:
Molarity of ions is 2.4 moles/kg
Explanation:
number of moles of Al(NO₃)₃ = 2 moles
Each Al(NO₃)₃ dissociates to release 3 nitrate ions (NO⁻₃)
Al(NO₃)₃ ---------> Al³⁺ + 3 NO⁻₃
therefore, 2 moles of Al(NO₃)₃ gives 6 moles of NO⁻₃ ions
Hence,
Molarity of ions = number of moles of ions / volume of solution
= 6 / 2.5
= 2.4 moles/kg
