1.

The total ionic strength (total molarity of all the ions) containing 0.2 M CuSO_(4) and 0.1M Al_(2)(SO_(4))_(3) is

Answer»

0.5 M
0.7 M
0.9 M
1.2 M

SOLUTION :In 1 L solution, moles of `Cu^(2+)=0.2,` moles
`SO_(4)^(2-)=0.2,` moles of `Al^(3+)=2xx0.1=0.2,` moles
of `SO_(4)^(2-)=3xx0.1=0.3`
Total moles of all ions = `0.2+0.2+0.2+0.3=0.9`
Hence, molarity of all the ions = 0.9 M.


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