CHEM 113L - Week 6 Labs.docx - 2-3 Strong and Weak...

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  • CHEM 113L
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2-3: Strong and Weak Electrolytes 1. Start Virtual ChemLab, select Reactions and Stoichiometry, and then select Strong and Weak Electrolytes from the list of assignments. The lab will open in the Titration laboratory. 2. Enter the stockroom by clicking inside the Stockroom window. Once inside the stockroom, double- click or click and drag on the three reagents, NaCl , Na 2 CO 3 (100%), and NaHCO 3 (100%) to move them to the stockroom counter. Click on the green Return To Lab arrow to return to the laboratory. 3. For each salt that was selected in the stockroom, complete the following procedure: double-click or click and drag the bottle on the stockroom counter to move it to the spotlight next to the balance. Click on the Beakers drawer and place a beaker in the spotlight next to the salt bottle in the balance area. Click on the Balance area to zoom in and open the bottle by clicking on the lid ( Remove Lid ). Drag a piece of weighing paper and drop it on the balance and then Tare the balance. Pick up the Scoop and scoop out some sample by first dragging the scoop to the mouth of the bottle and then pulling the scoop down the face of the bottle. As the scoop is dragged down the face of the bottle it will pick up different quantities of solid. Select the largest sample possible and drag the scoop to the balance and drop it on the weighing paper. This will put approximately 1 g of sample on the balance.

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