Question

gravimetric analysis of agno₃
purpose (lo): determine the concentration of agno₃ from a water treatment plant using a precipitation rxn and gravimetric analysis
safety concerns: silver ions are both toxic and corrosive. show extra caution when using this solution. ensure you are taking the necessary care if you get it on your skin/in your eyes.
necessary ppe: goggles and gloves
methodology:
method/lab skill: gravimetric analysis
procedure: the following procedures must be present
solution of nacl procedure

• this will include the calculations needed to determine grams of nacl needed to make your.1 m solution in the 250 ml flasks
• must be detailed, will likely take you ten steps

gravimetric analysis

• a full procedure that encompasses all necessary steps to complete the experiment
• precipitating the silver out of solution
• vacuum flask
• drying the filter paper
• must be detailed

raw data: make sure the filled data table below is in your lab notebook.
when you perform the precipitation rxn it is important to understand what is happening in the chemical equation. use the reactants below to predict the products. remembering your snap ions will help you determine which ions will stay in solution and which will form a precipitate. this will help with your analysis.
agno₃(aq) + nacl(aq) →

Explanation:

Step1: Write the chemical equation

$$\text{AgNO}_{3(aq)}+\text{NaCl}_{(aq)}\to\text{AgCl}_{(s)}+\text{NaNO}_{3(aq)}$$

Step2: Explain the reaction

Silver nitrate ($\text{AgNO}_{3}$) reacts with sodium chloride ($\text{NaCl}$) in a double - displacement reaction. The $\text{Ag}^{+}$ ions from $\text{AgNO}_{3}$ and $\text{Cl}^{-}$ ions from $\text{NaCl}$ combine to form insoluble silver chloride ($\text{AgCl}$) precipitate. The $\text{Na}^{+}$ ions and $\text{NO}_{3}^{-}$ ions remain in solution as sodium nitrate ($\text{NaNO}_{3}$) which is soluble.

Answer:

$$\text{AgNO}_{3(aq)}+\text{NaCl}_{(aq)}\to\text{AgCl}_{(s)}+\text{NaNO}_{3(aq)}$$