Variation of Conductance with Temperature in Electrolytes

This chapter covers the basics that you may have learned in your chemistry class. The questions that follow

The purpose of this lab is to study some of the physical properties of two types of solids – ionic and molecular. The samples used are sodium chloride (ionic) and camphor (molecular). The physical properties studied are odour, hardness, melting point, solubility in water and solubility in 2-propanol. It is observed that some of the physical properties of sodium chloride are no odours, hard, a high melting point, soluble in water and insoluble in 2-propanol; some of the physical properties of camphor are a strong odour, soft, a low melting point, insoluble in water and soluble in 2-propanol. A few conclusions can be drawn from these

6. The solubility of the solids were tested using a micro tray, by placing them in water and oil to observe their polarity,

Conductor – conductor is an object or type of material that allows the flow of electrical current in one or more directions. The electrons move easily to the other side, away from the object

Procedure: First you will need to get all the lab equipment and material that is needed to do this experiment. After that fill the 150ml beaker to ¼ full of water. Than you will be provided by a teacher or an instructor who will give copper with an scoopula. Than pour the copper that was provided into the beaker, before you stir

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

In Lab 8, the time constant of resistance-capacitance was measured in order to determine the charge of a capacitor. This experiment was conducted by setting building a circuit that connects the voltmeter across the resistor. The voltmeter was then connected across the capacitor. The above procedure was conducted several times using different voltages. Afterwards, the results were calculated and tabulated. The data obtained from the lab were the theoretical Tau for 5V, 4V and 3V. In this experiment, the calculated voltage was also determined. The theoretical and the calculated values were then compared and evaluated by determining their percentage errors. For example, in the 5V, the theoretical value was 1.23V; calculated value was 1.434 with a percentage error of 16.6 %( for voltmeter across capacitor).

Introduction: Voltage can be thought of as the pressure pushing charges along a conductor, while the electrical resistance of a conductor is a measure of how difficult it is to push the charges along. Using the flow analogy, electrical resistance is similar to friction. For water flowing through a pipe, a long narrow pipe provides more resistance to the flow than does a short fat pipe. The same applies for flowing currents: long thin wires provide more resistance than do short thick wires. The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity (the Greek letter rho), a number that depends on the material. The resistivity

For this experiment, there is several materials needed to have a successful lab experiment. This includes the basic utensils such as the datasheets, pencil, and a notepad to add additional notes. Following the list of materials, you will need three bottles to collect sampling water

This is my assignment one for the course CHE 432 at Arizona State University. The instructor for this class Dr. Burrows. Assignment one is due on Wednesday, August 30, 2017. There is no progress for date as this is the first assignment for the course. The assignments in this course will help me learn about chemical processes.

The mixture was warmed in a hot water bath until the solid dissolved and then 1.0 g of pyridinium hydrobromide perbromide was added. With a little acetic acid, the crystals of reagent from the sides of the flask were rinsed and then heated for an additional 1-2 minutes. Immediately, stilbene dibromide precipitated as small plates. Once the mixture has been cooled under tap water, the product was collected by vacuum filtration. Ice cold methanol was used to wash and the isolated solid continued to dry for a few minutes. To achieve maximum drying, the crystals were pressed with a spatula. The yield, percent yield, and melting point of the product was recorded. About 0.8 g of stilbene bromide should’ve been obtained with an expected melting point range of 236℃-237℃. The IR spectrum was obtained and compared to that reported for the pure

Chang, R. (2010). Chemistry. 10th ed. 1221 Avenue of the Americans, New York: McGraw- Hill Companies, Inc.

Alternating current (AC): Current flows in one direction, then the opposite direction in the circuit.

Olmsted, John III; Williams, Greg; Burk, Robert C. Chemistry, 1st Canadian ed.; John Wiley and Sons Ltd: Mississauga, Canada, 2010, pp 399 - 406

3. Leong, O. H. (2009). Qualitative Analysis. In Know Your 'O' Level Chemistry (pp. 101-103). Singapore: Panpac Education Pte Ltd.