Question

When an excess of sodium sulfide was added to 125mL of 0.100mol/L iron 2 nitrate, a black precipitate formed. Identify the percipitate, and calculate the maximum mass of precipitate that can be collected from the reaction.

Answer 1

Answer on Question #57248 – Chemistry – Inorganic Chemistry

Question:

When an excess of sodium sulfide was added to 125mL of 0.100mol/L iron 2 nitrate, a black precipitate formed. Identify the precipitate, and calculate the maximum mass of precipitate that can be collected from the reaction

Answer:

When an excess of sodium sulfide was added to 125mL of 0.100mol/L iron 2 nitrate, a black precipitate formed. Identify the precipitate, and calculate the maximum mass of precipitate that can be collected from the reaction.

$$\begin{array}{l} Fe(NO_3)_2 + Na_2S \rightarrow FeS \downarrow + 2NaNO_3 \\ n_{Fe(NO_3)_2} = n_{FeS} \\ m_{FeS} = n_{Fe(NO_3)_2} * M_{FeS} = 0.125 \, L * 0.1 \, \text{mol}/L * 87.91 \, \text{g/mol} = 0.110 \, \text{g} \end{array}$$

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