Question

What is the concentration of nitrate ions, if equal volumes of 0.1 M AgNO3 and 0.1 M NaCl are mixed?

Answer 1

Explanation:

Given,

0.1M AgNO

3

& 0.1M NaCl are mixed together.

We know,

0.1M AgNO

3

solution contains

0.1 moles of Ag

+

& 0.1 moles of NO

3

−

in 1000 ml of solution.

0.1M NaCl solution contains

0.1 moles of Na

+

& 0.1 moles of Cl

−

ions in 1000 ml of solution.

∴ Total moles of NO

3

−

=0.1

The total volume of solution=2000 ml

∴ Molarity of NO

3

−

ions=

Volume of solution in L

moles of NO

3

−

=

2L

0.1moles

=0.05M.

Hence, the correct option is C

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