Question

Which produces the greatest number of ions when one mole dissolves in water?

		K2SO4
		NaF
		LiMnO4
		NH4Br
		sucrose

Answer 1

a)

K2SO4 dissociates to give 3 ions (2 K+ and 1 SO42-)

So,

Moles of ions = 3*mol of K2SO4

= 3 mol

b)

NaF dissociates to give 2 ions (1 Na+ and 1 F-)

So,

Moles of ions = 2 mol

c)

LiMnO4 dissociates to give 2 ions (1 Li+ and 1 MnO4-)

So,

Moles of ions = 2 mol

d)

NH4Br dissociates to give 2 ions (1 NH4+ and 1 Br-)

So,

Moles of ions = 2 mol

e)

Sucrose is non electrolyte.

It will not give any ions

Number of ions is maximum for a

Answer: a