Question

For 2:1 electrolyte Na2SO4, the ionic strength is
a) M
b) 3 M
c) 6M
d) 4 M​

Answer 1

Answer:

As we know, ionic strength is

2

1

ΣcZ

2

.

[

Al

2

(SO

4

)

3

]

conc. after mixing

=

200

0.1×100

=

0.05M

[

Al

2

(SO

4

)

3

]→

2Al

+3

+

3SO

4

−2

[

Na

2

SO

4

]

conc. after mixing

=

200

0.2×100

=

0.1M

[

Na

2

SO

4

]→

2Na

+

+

SO

4

−2

I.S.=

2

1

ΣcZ

2

=

0.05×

2×

3 2

0.05×

3×

2 2

0.1×

2×

1 2

0.1×

1×

2 2

=

2

2.1

=

1.05

Explanation:

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Answer 2

Answer:

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