Calculate the molecular weight of the unknown metal cation. _______ g/mol (Hint: Is the precipitate in the second reaction a pure metal?) What is the identity of the metal in the unknown solution?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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From the solution in Products 2, it was filtered and heated further until it was dried. This produced a precipitate with 0.3592 g.

  • Calculate the molecular weight of the unknown metal cation. _______ g/mol (Hint: Is the precipitate in the second reaction a pure metal?)
  • What is the identity of the metal in the unknown solution?
An unknown solution labeled only by its concentration was analyzed. It was
labeled to have 1.000 M X(NO,), and known to be a metal cation. To find out
to identity of the cation, a 10.00 mL aliquot of the solution was reacted with
10.00 mL of 1.000 M NaOH solution and heated according to the reactions
below
(1st reaction) X(NO,)2+2 NaOH A+2 NANO,
(2nd reaction) A + heat
B H,0
Transcribed Image Text:An unknown solution labeled only by its concentration was analyzed. It was labeled to have 1.000 M X(NO,), and known to be a metal cation. To find out to identity of the cation, a 10.00 mL aliquot of the solution was reacted with 10.00 mL of 1.000 M NaOH solution and heated according to the reactions below (1st reaction) X(NO,)2+2 NaOH A+2 NANO, (2nd reaction) A + heat B H,0
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