Cuso4 Lab

Good Essays
Topics: Water, Heat
Copper (II) Sulfate
Purpose: The purpose of this lab is to find out how many moles of water there are in one mole of Copper Sulfate (CuSO x HO) and the percent by mass of water in the hydrate. This will be accomplished by heating a determined mass of the hydrate to remove the water, and by measuring the salt left over.
Introduction: This laboratory experiment will be done to find out how many moles of HO are present per one mole in the hydrate CuSO. A hydrate is a compound that has a fixed number of water molecules. The water in this hydrate can be removed by heating it, and when all the water from the hydrate has been removed it becomes anhydrous. This means that the hydrate has become completely dry, and is without water. This is important because to find the number of moles of water present in one mole in the hydrate CuSO you must first heat the hydrate and make it anhydrous.
Hypothesis: In this experiment the amount of moles of HO per mole of CuSO in the anhydrous salt will be between 1-7. This amount will be obtained by heating the hydrate and determining the number of moles from the masses.
Materials:
* Brunson Burner * Ring Stand * Copper Sulfate * Evaporating Dish * Gas * Fume Hood * Scooper * Scale
Procedure:
1. Collect an evaporating dish and wash it to make sure there is no chemical residue on it 2. Weigh the mass of the evaporating dish and then tare the scale 3. Add about 2 grams of the hydrate and record the mass of the hydrate 4. Spread the hydrate across the bottom of the dish and place it on the ring stand inside the fume hood 5. Turn the gas on and place the Brunson burner underneath the evaporating dish on the ring stand 6. Heat the hydrate until the blue turns into a grayish white 7. Turn off the gas and then shut off the Brunson burner 8. Wait about five minutes for the hydrate to cool down 9. Reweigh the dish with the heated hydrate and record the final mass 10.

You May Also Find These Documents Helpful

  • Good Essays

    Cuso4 + 5h2o Essay

    • 627 Words
    • 3 Pages

    Calculations Mass percent of water in CuSO4·5H2O using experimental data: (mass of water lost / mass of hydrated salt) x 100 (0.658 / 2.009) x 100 = 32.75 % Mass percent of water in CuSO4·5H2O using theoretical data: (90 / 249) x 100 = 36.14 % Percent error using experimental and theoretical mass percentages: (experimental value – theoretical value / theoretical value) x 100 (32.75 – 36.14 / 36.14) x 100 = 9.38 % Average percent water in CuSO4·5H2O using experimental values: (trial 1 % water +…

    • 627 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Heat Hydration of Cuso4

    • 540 Words
    • 3 Pages

    F6/7 Chemistry Practical: Enthalpy of hydration of copper(II) sulphate Objective: To determine the enthalpy of hydration of copper(II) sulphate Group size: Individual Introduction This experiment enables an approximate determination of the enthalpy of hydration of copper(II) sulphate to be made. The enthalpy change when one mole of anhydrous copper(II) sulphate is dissolved in water is first determined. Secondly, the enthalpy of solution of copper(II) sulphate pentahydrate in water is determined…

    • 540 Words
    • 3 Pages
    Good Essays
  • Good Essays

    lab lab lab lab

    • 403 Words
    • 2 Pages

    Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light, refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell's Law (). Objective: To measure the index of refraction of Lucite…

    • 403 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Hydrate Lab

    • 587 Words
    • 3 Pages

    Formula of a Hydrate Lab Design: Problem: What is the chemical formula for a hydrated copper (II) sulphate compound? Controlled Variable: The mass of hydrated copper (II) sulphate. Responding Variable: The mass of dehydrated copper (II) sulphate, mass of H2O Materials: Ones on the handout + Hot plate. Procedure: 1. Mass 3.00g of hydrated copper (II) sulphate using electronic balance 2. Measure the mass of a thin, crucible dish using electronic balance 3. Gently pour hydrated…

    • 587 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Science Lab

    • 562 Words
    • 3 Pages

    sulphate solution Safety: 1. Be careful with copper (II) sulphate solution it is poisonous and corrosive. handle with care 2. Do NOT BREATH in any gases produced 3. If you touch any of the metals, you MUST wash your hands at the end of the lab Procedure: 1. Collect the materials and put on safety equipment. 2. Observe the metals and record your observations. 3. Into separate test tubes, place each metal inside. Label accordingly to metal. 4. Measure 5mL of the copper (II)…

    • 562 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Yield Lab

    • 946 Words
    • 4 Pages

    measured and weighed. It was found in the experiment that the yield of copper hydroxide in 40%. Introduction: The copper (II) sulphate is then placed in 100 mL of distilled water. Then 20 mL of CuSO4 is measured and placed 100 mL of distilled water. This can later be weighed to determine the mol of CuSO4 and the mol/L concentration. Then this was used to find out how many mL of 0.5 NaOH solution is needed to react completely with all the copper (II) sulphate in solution. Then titrate ¼ of the estimated…

    • 946 Words
    • 4 Pages
    Powerful Essays
  • Good Essays

    Chemistry Lab

    • 971 Words
    • 4 Pages

    Physical and Chemical Change Objective: Recognize and distinguish between chemical and physical changes. Materials: - lab balance - microspatula - lab burner - dropper pipet - 5 test tubes - mortar and pestle - test tube rack - magnet - test tube holder - insulating pad - watch glass - safety goggles - glass square - lab apron or coat - copper sulfate pentahydrate - iron fillings - sodium chloride - magnesium ribbon - hydrochloric acid - paper…

    • 971 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Chem Lab

    • 570 Words
    • 3 Pages

    Title: Zinc and Copper II Sulfate Lab Purpose: To determine which mole ratio of Zinc and Copper II Sulfate produces the greatest temperature change in degrees celsius. Background: This experiment will be looking for color change, temperature change, and precipitation change. Some background knowledge I know is how to balance equations. I also know side effect of a chemical change, in this experiment there was a color and temperature change. Other background knowledge is using and applying the…

    • 570 Words
    • 3 Pages
    Powerful Essays
  • Good Essays

    Chem Lab

    • 431 Words
    • 2 Pages

    October 1, 2013 Chemical Reactions of Copper Objective The objective of this lab is to convert copper (Cu0) “in a series of reactions to various compound containing copper as the Cu2+ species” (CHM111 Laboratory Manual) in order to prove the Law of the Conservation of Mass. Introduction In this experiment, we took a look at how copper (Cu0) reacts with different substances to get an end result where it is transformed back to its original state. There were five different reactions that involved…

    • 431 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Stoichiometry Lab

    • 1143 Words
    • 5 Pages

    Stoichiometry lab By: James Stewart Purpose: To calculate mole ratios Introduction: There are two types of chemical analysis; qualitative analysis which is the identification of a substance present in a material, and qualitative analysis which measures the amount of the substance. In this lab, you will perform a quantitative analysis of a two-step reaction. Copper(II) oxide will be synthesized from a known mass of copper(II) sulfate pentahydrate. Using the relationship of the balanced equation…

    • 1143 Words
    • 5 Pages
    Good Essays