Qualitative Analysis Testing on ions- Cations and anions can be identified in various different ways and on different levels. Many Qualitive analysis tests can be done to identify cations and anions through change of temperature and chemical reactions. The ‘Flame test’ is designed to identify a cation in a compound solution through changes of temperature, the cation can be identified by the color of the flame it produces. On the other hand, the ‘Precipitate test’ is designed to identify the anion in a compound solution this is done through the type of simple chemical reaction it produces. Cations are positively charged ions, there is only one type of cation.
A method which will be used in this experiment will be to use a gas syringe to measure the volume of the gas which has been produced. The cylinder inside, will be pushed out to show a quantitative presentation of the volume produced by the reaction. Collision theory is a theory proposed by Max Trantz that explains how chemical reactions occur and why there are different rates for different reactions. Hypothesis I predict that the more baking powder is added to the vinegar, the
Basically the uranium releases enough heat to boil the water to 300ºC. We all know that water turns to vapour at 100ºC so how do we keep it in liquid form so it can turn the turbines and generate electricity? Answer: Keep the whole chamber at an extremely high pressure so the water is in essence ‘squeezed’ into staying as a liquid. This chamber needs a coolant around it to stop the plant from overheating. Now imagine what happens when there is a disaster, or a power cut and the this cooling system stops working….300ºC, high pressure chamber, radioactive source…Fukushima.
The goal of the experiment is to synthesize a bromohexane compound from 1-hexene and HBr(aq) under reflux conditions and use the silver nitrate and sodium iodide tests to determine if the product is a primary or secondary hydrocarbon. The heterogeneous reaction mixture contains 1-hexene, 48% HBr(aq), and tetrabutylammonium bromide and was heated to under reflux conditions. Heating under reflux means that the reaction mixture is heated at its boiling point so that the reaction can proceed at a faster rate. The attached reflux condenser allows volatile substances to return to the reaction flask so that no material is lost. Since alkenes are immiscible with concentrated HBr, tetrabutylammonium bromide is used as a phase-transfer catalyst.
Fully understanding calorimetry is a very important skill to have whilst analyzing fuels. Calorimetry can be defined as the process of measuring how much heat is released or absorbed in a chemical reaction. The students will be dealing with an endothermic reaction, a reaction taking in heat rather then letting off heat. Calorimetry will be useful when analyzing fuels because the students will be able to collect data on however much heat is being released into the environment after the fuel is burnt.
When preparing an ester (an organic compound) the reactants are heated together under reflux so any material that evaporates is condensed and returned to the mixture. The mixture is then distilled to separate the product. A reflux apparatus: A distillation apparatus: Preparation and testing of an organic liquid Preparing and testing an organic liquid for purification has 3 distinct parts to it: Reflux, Separation and Distillation. Reflux and Distillation reactions must be carried out in a fume cupboard to avoid toxic vapours from escaping and must also be allowed time to boil and reflux/distil. Safety measures:
1. The topic I’m doing my experiment on is chemical reactions. In my experiment I will mix baking soda and vinegar in a closed plastic bottle. I hypothesize that when the baking soda and vinegar mix gas will form and start filling up the bottle eventually leading to a small explosion. The dependent variable is the product of the chemical reaction and the formation of gas filling up the bottle eventually causing an explosion.
With the perfect conditions water boils at “212°F: Full rolling boil.”(Lopez,K) Another factor in boiling point is any impurities residing the the water itself. “For instance, if water comes to a boil at exactly 100 degrees Celsius at 1 atmosphere, it means that is pure and does not contain any impurities. If the boiling point differs, it must mean that the water is impure.”(Factors that affect the boiling point of water.) Overall there are many ways that water 's boiling point can be affected by outside forces, but the focus will be on alkaseltzer tablets and how they influence water 's boiling point. The active ingredients in the alka seltzer tablet are “As the tablets dissolve, the sodium bicarbonate splits apart to form sodium and bicarbonate ions.
When Fire and Music Meets Physics we get the Pyro Board The Pyro board is a metal box with speakers attached to it and propane ran into it. There are holes strategically placed throughout the top depending on the boxes overall size and design for the flames. After the Pyro board is built it can be used to demonstrate sound waves. The Pyro board is an adaptation of the Rubens tube. The Rubens tube was invented in 1905 by Heinrich Ruben to demonstrate the relationship between sound waves and sound pressure.
In order to calculate for the molar mass the temperature, volume, mass, and pressure was measured. The ideal gas law equation was derived in order to express the relationship between the molar mass, mass of the condensate, temperature, pressure, and volume. A 125-mL Erlenmeyer flask was added with an unknown liquid, was capped with an aluminum foil with a tiny hole and was heated in boiling water in a beaker until the liquid in the flask is vaporized. The flask was cooled until condensate is observed. After cooling, the flask was weighed in an analytical balance.