Chemical Reactions Double Replacement reactions
...le replacement reaction occur? Material(per group) safety goggles, triple-beam balance, 2/ 250mL beakers, weighing paper, lead nitrate, potassium iodide, stirring rod, graduated cylinder. Procedure 1. Put on safety goggle. Place a piece of weighing paper on the balance beam and note its mass. Add 3 grams to the mass of the paper and move the rider to this number. Measure out 3g of lead nitrate and place it in one of the beakers. Discard the paper. 2. Add 50mL of distilled water tot the beaker and stir thoroughly to make sure that all the solid has dissolved. Rinse off the stirring rod and wipe dry. Label the beaker ˇ§Lead Nitrate Solution.ˇ¨ 3. Repeat steps 1 and 2 using potassium iodide. Label the beaker ˇ§Potassium Iodide Solution.ˇ¨ 4. Pour the solution from 1 beaker into the other beaker and observe the results. Stir wit the stirring rod and observe. 5. To dispose of your product, put it in the waste container indicated by your teacher. Do not spil the product down the sink. Rinse the beaker once with tap water and dispose of this material in the waste container. Thoroughly was the beakers and stirring rod with soap and water. Observations 1. It didnˇ¦t dissolve evenly 2. It became cloudy 3.Together it became a yellow solution Conclusions 1. Lead and nitrate 2. Potassium and iodide 3. Lead nitrate + Potassium IodineǨPotassium Nitrate Questions...