While the solution dissolved, 50 mL of distilled water was added to a 150 mL beaker and heated on the hot plate. When the solution started to boil 2.65 grams of Na2SiO3*5H2O was added to the beaker with a stir bar and heated to a gentle boil. When both solutions began to boil, the sodium silicate solution was slowly added to the sodium aluminate. The solution was kept at 900C for 60 minutes and stirred with stir bar. After 60 minutes, the zeolite solution was cooled for 5 minutes and for the magnetized zeolite , 0.78 grams of FeCl3 and 0.39 grams of FeSO4*7H2O was added to the flask and stirred until the iron parts dissolved.
Next, a 10 mL beaker is filled with 3 mL of HCl and measure 10 mL of ionized water into a 140 mL beaker. Carefully turn on laboratory burner and start cleaning the Nichrome wire by dipping it into concentrated HCl acid. Hold the Nichrome wire on top of the flame and repeat the step until the wire doesn 't show any color. When the wire is clean, dip the wire again with some of the acid and dip it into the solution with the unknown compound in it. Place the wire back into the flame again and observe the color of the flame.
An error that could have been present during the lab includes not letting the zinc react completely with the chloride ions by removing the penny too early from the solution. For instance, the percent error of this lab was 45.6%, which was determined by the subtraction of the theoretical percent of Cu 2.5% and the experimental percent of Cu 3.64% and dividing by the theoretical percent of Cu 2.5%. This experiment showed how reactants react with one another in a solution to drive a chemical reaction and the products that result from the
Consequently, it induces second element to be oxidized. 2. In the experiment #3, zinc electrode acts as anode, where the oxidation processes occur, while iron half-cell acts as cathode, where the reduction processes appear. In the experiment #4, iron is visa verse reducing agent that evicts electrons to copper half-cell through the circuit.
(II) Carbonate forms the molecular compound of Carbon Dioxide when heated. Copper oxide remains as the ionic compound. When copper (II) carbonate and oxygen are heated, there is an oxidation reaction that occurs. The copper ion bonds with one oxygen ion while the carbon atom bonds with the remaining two oxygen ions. d) CuCO3 (s)----> CuO (s)+ CO2 (g) Copper (II) Carbonate ---> Copper Oxide + Carbon Dioxide e)When a glowing splint is brought near the opening of hydrogen peroxide, it re-ignites which means that oxygen gas has been produced as hydrogen peroxide
Zn(s) + 2 HCl (aq) which led to ZnCl2 (aq) + H2(g) Experiment
Introduction: The aim of this experiment was to see whether water, Powerade or orange juice contained more electrolytes. Electrolytes are responsible for controlling the total amount of water in the body, regulating blood volume and maintaining muscle and nerve function. A lack of these electrolytes can cause headaches, fatigue, confusion, hallucinations and muscle spasms. I found that water and distilled water were less conductive than the orange juice and Powerade and orange juice proved to be the most conductive.
Name: Amra Aliyu Lab partner: Jamie Liang Lab: Empire of Electricity Course: Chem 106 Date: 7/11/2015 INTRODUCTION A galvanic cell is an electrochemical cell that goes through a redox reaction and produces electrical energy . It converts chemical energy to electrical energy and the energy goes from the anode to the cathode. In this lab we had manipulate an exothermic zinc reaction to produce electricity.
The zinc will form a new compound with the sulfate, and the copper will stay as a metal. Balanced Chemical
The ions exchanged include potassium ions (K+) and sodium ions (Na+). Sodium ions are sodium atoms with a positive charge as a result of losing and electron. Certain proteins along the cell's plasma membrane called ion channels play a significant role in the process, allowing particular ions in and out of the membrane.
If one compares the amount of electrolytes present in an artificial substance (sports drink), to those in a natural substance (orange juice), then the natural substance will have the most electrolytes. That is my hypothesis. I chose this topic because I have always been skeptical about the validity of the quantity of electrolytes said to be in sports drinks. Sports drinks have been recommended as a way to replace electrolytes, which are lost during exercise. However, orange juice also has electrolytes and these are naturally occurring, not man made.
Electrolytes are essentially salts which are crucial in order for certain parts of your body to function correctly. These include sodium, chloride, potassium, magnesium, calcium, and many more. They help keep your nerve impulses and pH level at an average rate. The lower the pH level, the more acidic and less oxygenated the fluid is; the higher the pH level, the more alkaline and oxygenated the fluid is. Electrolytes also increase absorption of fluids into the bloodstream which helps to prevent dehydration.
When electrolytes, like sodium chloride, dissolve in water, the crystals separate and become ions. Ions are conductors of electricity; the more ions in water, the better it can conduct electricity. For example: salt and tap water have more ions in them than deionized water, which is pure and doesn’t have ions in it, so it won’t conduct electricity as well. Other good conductors of electricity include metals such as copper and aluminum. Objects that don’t conduct are called insulators; these include objects like rubber, glass, and plastic.
2.2.4 Faradaic Reaction In CDI process there are two reactions that might be happens, Faradaic reactions and non-Faradaic reactions. Ion transport and capacitive storage are categorized as non-Faradaic reaction which is standard process that hopefully happen in CDI process, while Faradaic reaction (i.e, redox reactions both on the surface of and within the carbon electrodes) may lead to the formation of chemical byproducts and/or pH fluctuations of the produced water [44], [45]. Faradaic reaction also could lead to instability of long cycle CDI performance, which is specifically caused by reduction reaction at the cathode which is automatically drive the anode potential to possible values where oxidation in anode is occurred [46].
Preparation of Working Electrode. Carbon fiber is used as the conducted electrode for this experiment. Cut two long stripes of carbon fiber into 8 shorter stripes around the same length. The chart shows the length, width and area of each of the eight carbon fiber pieces.
