The concentration of sodium hydroxide is 1.0 M and the concentration of crystal violet is 1.00 x 10-5 M. Identify the limiting reagent and calculate how much of the excess reagent remains after the reaction runs to completion

Question

Chemistry

Lorena Heath

9 November, 15:38

The concentration of sodium hydroxide is 1.0 M and the concentration of crystal violet is 1.00 x 10-5 M. Identify the limiting reagent and calculate how much of the excess reagent remains after the reaction runs to completion

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Nathalie Henderson · Answer 1

To determine which is the limiting reactant and the excess reactant, we need to determine the number of moles we have for the reaction to be used. We assume to have 1 liter solution of each reactant. We do the following:

C25N3H30Cl + NaOH = C25N3H30OH + NaCl

1.0 M NaOH (1 L) = 1.0 moles NaOH

1.00 x 10-5 M C25N3H30Cl (1 L) = 1.00 x 10-5 moles C25N3H30Cl

Therefore, the limiting reactant is crystal violet and the excess reactant is NaOH.