Double Displacement Reaction Lab Report

I. LIQUID - Identification of an Unknown Liquid: Using the physical properties of Solubility, Density, and Boiling Point.

5. Prepare the salt solution by mixing 1/8 teaspoon of salt and three cups of water in a clean pitcher or 2-liter bottle. Stir or shake the solution until it is dissolved. This will produce a 1% salt solution.

In experiment A the results from the precipitation of CaC2O4 H2O from the salt mixture were obtained by weighing the items listed on Table 1 on a scale.

c) Record the amount of substance that dissolved – all, some, a little, or none.

Lab procedures must be communicated in a lab to ensure that the lab is a safe place to perform experiments. Using good judgment, observe safety rules and follow directions can prevent accidents form happening. Experiments should include comments to alert people

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?

Unless otherwise directed to do so, students should work alone in doing in the laboratory exercises. Take extreme care when using the analytical balances, thermometers, and other items of equipment that are expensive and/or may be easily broken. When the laboratory exercise is completed, all equipment should be cleaned and put in its proper place or in the locker in an orderly way. The bench top and common work areas should also be

Risk assessments are vital to be included within a laboratory setting as it involves evaluating the potential risks which may be involved when completing an experiment or activity. The employer must be aware that risks which someone is exposed to at work must be reduced by them responsibly implementing precautions in order to make the setting safer. They need to analyse: what could possible go wrong? How likely is it? And what would be the consequences? These questions are regularly used when creating a risk assessment so that every risk sheet has a similar outline and meets the criteria of an effective risk assessment. It covers the general procedures, the working environment and the handling, storage and transportation of various substances.

8. List three things that one can do to protect oneself from contamination/injury in the laboratory. (6

Independent and controlled variables: The amount of sulfuric acid used for catalysis and the amount of salicylic acid and acetic anhydride.

Solutions of 6M H2SO4, 6M NH3, 6M HCl, 6M NaOH, and 1.0 M of NaCl, 1M Fe(NO3)3, 1M NiSO4, 1M AgNO3, 1M KSCN, 1M Ba(NO3)2, and 1M Cu(NO3)2 were given in separate test tubes. The color of possible precipitates, ions, acid-base behaviour, odor and solubility rules were conducted and were reported in Table 1. The key information about a mixture of two solutions was

3. When two solutions combine and a solid substance is formed, this solid is called a precipitate. In your experiments, if the clear reactant solutions you combined together formed a cloudy product, then a precipitate (solid substance) was formed. Describe the precipitates (according to color and clarity) and the substances that formed them. (18

1.) Measure out 20ml out of the water and place it into a glass beaker

This lab revolves around precipitate it reactions. The precipitate reactions happen when it had cations (positive atoms) and anions (negative atoms) in aqueous solutions combined to form an insoluble ionic solid, which is called a participate. In order for these reactions to occur they must be Aqueous and this can be determined by using solubility rules. Predicting these reactions a sign test to find out which ions are present in a solution. Double displacement reactions are the kinds used in this lab. This means that the compound will switch partners and form a bond with a different part. The reaction occurs in Aquarious solution and one of the products that is formed is in soluble.

During this lab period, the safety procedures that should be followed are wearing your lab coat, safety glasses, gloves and use proper tools for dissection.