Essay about Law of Conservation of Mass

1079 Words Nov 12th, 2008 5 Pages
Title:
Law of Conservation of Mass

Purpose:
The purpose of the Law of conservation of Mass lab is for me to attempt to verify the Law of Conservation of Mass.

Procedure:
Acid Base Neutralization
1. Using 2 modified, beral pipettes fill pipet an about 1/5 full of white vinegar and pipette B about 1/5 full of 1.0 M NaOh (sodium hydroxide).
2. Place the 2 Pipets on the beam balance and read and record the total mass of the 2 pipets.
3. Carefully telescope the stem of pipet A into the stem of pipette B without spilling any liquid.
4. Mix the solutions by gently squeezing the bulb of pipette A into pipet B. Record any observations.
5. Place the apparatus on the beam balance and record the final
…show more content…
5. Remove from beam balance slowly loosen the cap n the bottle. Tighten the cap again and place the bottle system on the beam balance and record the mass.

Data and Observations

Acid Base Neutralization Formation of A Precipitate Formation of a Gas mass of pipets w/ Vinegar and NaOh not mixed (g) mass of pipets w/vinegar and NaOh solution (g) mass of pipets w/lead acetate and potassium iodide not mixed (g) mass of pipets w/lead acetate and potassium iodide solution (g) mass of open bottle w/ water and cap of 1/4 alka seltzer (g) not mixed mass of sealed bottle w/ water and alka seltzer (g) mass of re tighten sealed bottle with solution of water and alka seltzer (g)
5.5g 4.8g 6.75g 6g 50g 50g 50g

Acid Base Neutralization Formation of a Precipitate Formation of A gas
Observations when the chemical combine they turn a dark pink color the mixed chemicals seem to disperse from one another when the chemicals combine they form a yellow powdery substance when the water and alka seltzer combine the substance turns acidic and it evaporates

Materials:
1. beral pipets
2. bottles with caps
3. granulated cylinder
4. beam balance
5. White vinegar, phenolphthaelin, 1M NaOh (sodium hydroxide), .1M Pb (C2H3O2) 2 (lead acetate), .1M (potassium iodide) alka seltzer tablets

Calculations and questions:
The mass difference of the initial and final

Related Documents