1 Cotton Swabs, 1 Sheet each of white and black paper, 1 Distilled water, Goggles-Safety, 1 Well-Plate-24,1 Well-Plate-96, Bag-CK1 1 Pipet, Empty Short Stem, Experiment Bag Ionic Reactions 1 Barium Nitrate, 0. 1 M – 2 mL in Pipet, 1 Cobalt (II) Nitrate, 0. 1 M – 2 mL in Pipet1 Copper (II) Nitrate, 0. 1 M – 2 mL in Pipet, 1 Iron (III) Nitrate, 0. 1 M – 2. 5 mL in Pipet, 1 Nickel (II) Nitrate, 0. 1 M – 2 mL in Pipet, 1 Sodium Bicarbonate, 0. 1 M – 2 mL in, Pipet, 1 Sodium Carbonate, 0. 1 M – 2 mL in Pipet, 1 Sodium Chloride, 0. 1 M – 2. 5 mL in Pipet, 1 Sodium Hydroxide, 0.
1 M – 2 mL in Pipet, 1 Sodium Iodide, 0. 1 M – 2. 5 mL in Pipet, 1 Sodium Phosphate, 0. 1 M – 2 mL in Pipet,1 Sodium Sulfate, 0. 1 M – 2. 5 mL in Pipet CAUTION! Sodium hydroxide is caustic and can burn skin and clothes if it touches them. Rinse any spills well with copious amounts of water. Also, most of these chemicals are toxic by ingestion. So remember, no food or drinks in the lab! 1. All reactions will be performed in the 96-well plate. a. Place 2 drops of cobalt (II) nitrate solution into seven of the A row wells. b. Place 2 drops of copper (II) nitrate into seven of the B wells.
c. Place 2 drops of iron (III) nitrate into seven of the C wells. d. Place 2 drops of barium nitrate into seven of the D wells. e. Place 2 drops of nickel (II) nitrate into seven of the E wells. 2. When performing the following, NEVER TOUCH THE TIP OF THE PIPET TO THE SOLUTION ALREADY IN THE WELL! a. Place 2 drops of sodium phosphate solution into five vertical wells under column number 1. b. Place 2 drops of sodium iodide solution into five vertical wells under 2. c. Place 2 drops of sodium sulfate solution into five vertical wells under 3. d.
The Term Paper on The Solubility Curve Of Potassium Nitrate Experiment Report
The chemical compound potassium nitrate is a naturally occurring mineral source of nitrogen. It is a nitrate with chemical formula KNO3. Its common names include saltpetre (from Medieval Latin sal petrae: “stone salt” or possibly “Salt of Petra”), American English salt peter, Nitrate of potash and nitre. The name salt peter is also applied to sodium nitrate. Description: ...
Place 2 drops of sodium chloride solution into five vertical wells under 4. e. Place 2 drops of sodium bicarbonate solution into five vertical wells under 5. f. Place 2 drops of sodium carbonate solution into five vertical wells under 6. g. Place 2 drops of sodium hydroxide solution into five vertical wells under 7. Cleanup: When all observations have been recorded rinse the 24-well plate and the 96-well plate under tap water until all remnants of chemicals have disappeared. Use a Q-tip® to remove stubborn precipitates. If the precipitates are allowed to dry they are much harder to remove.
Dispose of any unused solutions by flushing them down the drain with lots of water and throw the empty pipets in the trash DATA, OBSERVATIONS, CALCULATIONS: Questions: Data Table: Solubility of compounds used | | Co(NO3)2 | Cu(NO3)2 | Fe(NO3)3 | Ba(NO3)2 | Ni(NO3)2 | Na3PO4 | Purple precipitate | blue precipitate | Yellow precipitate | white precipitate | Greenish white precipitate | NaI | NR | Orange precipitate | Dark orange precipitate | NR | NR | Na2SO4 | NR | NR | NR | White precipitate | NR | NaCl | NR | NR | NR | NR | NR |
NaHCO3 | NR | Blue precipitate | Light orange precipitate | White precipitate | Light blue precipitate | Na2CO3 | Pink precipitate | Blue precipitate | Orange precipitate | White precipitate | Bluish white precipitate | NaOH | Blue precipitate | Greenish blue precipitate | Orange precipitate | White precipitate | Bluish white precipitate | List of anions used: Phosphate, Iodide, Sulfate, Chloride, Bicarbonate, Carbonate, Hydroxide List of cations used: Cobalt, Copper, Iron, Barium, Nickel A. Do your results agree with your expectations from the solubility rules/table? Yes, the results agree with expectations from the solubility rules
The Term Paper on Chemical Fertilizer vs. Organic Fertilizers
Agriculture is the most primitive occupation of the people which mainly needs land to grow different crops for food and as raw materials for different industries. Industrial use of agriculture for supplying raw materials came much later. Originally land was used for agriculture to supply food for human beings by the use of organic manures particularly animal dung. At the beginning land was used in ...
B. Which anions generally form precipitates? What are exceptions? Most salts of carbonate, CO32- Phosphate, PO43- Oxalate, C2O42- Chromate, CrO42- Most metal sulfides, S2- Most metal hydroxides and oxides Exception: salts of NH+ and the alkali metal cation C. Which anions generally do not form precipitates? What are the exceptions? Salts of nitrate, NO3 – Chlorate, ClO3 – Perchlorate, ClO4 – Acetate, CH3CO2 – Almost all salts of Cl -, Br -, I – Exceptions: Halides of Ag+, Hg22+, Pb2+ Compounds containing F- Exceptions: Fluorides of Mg2+, Ca2+, Sr2+, Ba2+, Pb2+ Salts of sulfate, SO42-
Exceptions: Sulfates of Ca2+, Sr2+, Ba2+, Pb2+ D. Which cations generally do not form precipitates? Cations of alkali metals group1 and most of group 2 ad very few insoluble salts. They do not form precipitates. F. Select 5 reactions that produce a precipitate, color change, or gas and write balanced chemical equation below. Remember, a reaction may be indicated by the formation of a precipitate, color change, or the formation of gas. Record the well numbers of the precipitates you chose for your equations. 1A Co(NO3)2*6H2O when mixed with Na3PO4*12H2O the chemical combination turned Purple.
1B Cu (NO3)2 *3H2O when mixed with Na3PO4*12H2O the chemical combination turned light blue 1C Fe (NO3)3 * 9H2O when mixed with Na3PO4*12H2O the chemical combination turned a light yellow 1D Ba (NO3)2 when mixed with Na3PO4*12H2O the chemical combination turned white and the mixture sizzled when mixed. 1E Ni (NO3)2 * 6H2O when mixed with Na3PO4*12H2O the chemical combination turned a light foam green. CONCLUSION: The purpose of this experiment is to work with solutions of ionic substances. When ionic substances are dissolved in water, the ions separate and become surrounded by water molecules.
The focus of this experiment is on precipitates. The goal of this experiment is to study the nature of ionic reactions, write balanced equations, and to write net ionic equations for precipitation reactions. Based on the solubility rules my results proved accurate. Just by looking at the solubility rules, my results were what I expected them to be. I found that sodium chloride did not react with any of the five substances and that the sodium sulfate only reacted with the barium nitrate. Although I feel this experiment was interesting, I believe directions could have been more clear and detailed for better results.
The Term Paper on Introduction to Chemical Engineering
Chapter 1: Introduction to Chemical Engineering Profession Teach (T) Students are exposed to a topic. No explicit learning objectives. No major activities such as assignments, exercises of projects. No assessment is linked to this topic. Use (U) There is an explicit learning objective. Compulsory activities such as assignments, exercises or projects are specifically linked to this topic. Students ...
