The Effect of Ionic Strength on the Solubility of an Electrolyte

2. Did the temperature of the water rise or fall when the NH4NO3 was added. Explain this in terms of heat transfer.

13. The temperature of the water was measured prior to the tube being placed in it and the temperature of the Hydrochloric Acid was measured after it 's temperature had adjusted.

You have the mass of water from calculation #9, the specific heat of water is 4.184 J/g(oC), and the temperature change of water

2. How did concentration and/or volume differences affect the heat change (q) for each trial?

In this experiment, hydrochloric acids at different temperatures will be used to observe the effect of temperature in dissolving Alka Seltzer tablets. Four different temperatures as 25 degrees Celsius, 45 degrees Celsius, 65 degrees Celsius, and 85 degrees Celsius will be arranged before the experiment by using a heating pad. 25 degrees Celsius indicates the average room temperature and equal increases will be chosen to observe different responses of Alka seltzer to different temperatures.

In part I, the ΔH of each individual reaction was obtained by performing each reaction inside a calorimeter. Temperature probes were inserted in the calorimeter and ΔT was measured. By using the equation q = Msol’n x Cp x ΔT + Ccal x ΔT, the heat absorbed by the surroundings, q, was obtained for each reaction. The negatives of these values, or heat released by the

13. Calculate the change in temperature for the water caused by the addition of the aluminum by subtracting the initial temperature of the water from the

The amount of tablets did effect the temperature of the water. Our findings made our hypothesis incorrect. The temperature of the water did increase as the number of the tablets increased also. In this experiment, the finding were quite surprising, simply because I thought that the temperature of the water will decrease as the amount of the number of tablets increased. In the real world I feel like this information would be beneficial, because it shows the reaction of an acid plus a base mixed with water.

The objective of this experiment is to see how safe bottled and tap water is to drink based on what is in the water; specifically the contaminants and the pH balance of the water. As well as if the temperature of the environment that the water is placed in affects the pH balance of the water along with if bacteria is grown due to the condition it is in. Water is one of the most important things in life, being as it is known as the universal solvent, and humans and many other animals need it to survive. Along with water, the balance of pH is also extremely important in the maintenance of any organism 's life, including the lives of humans. Temperature is known to affect the speed of movements of ions within a solution. There are specific

to portray its pressure/volume/temperature behaviours. We will use the temperature of the boiling water (T), ambient pressure (P), volume (V) and the ideal gas constant (R = 8.31451 J/mol K) to calculate the number of moles (n) of the compound and then, furthermore, the molar mass of the substance.1

The Boric acid is often used as a flame retardant and a neutron absorber and is commonly found involved with nuclear reactors because of its high cross-section for neutron capture. It is often referred to as a neutron poison. The brown on the mixture decreases the chances of increased thermal fission because it sorbs some of the thermal neutrons. Fission chain reactions are often powered by the probability the free moving neutrons will result in fission. By adding boric acid to a coolant, the odds thats a neutron will cause additional fission is greatly reduced.

The procedure for this experiment is found in the organic chemistry I lab manual written by Zachary Poulos (pages 123-134). There were no changes to the procedure.

Boron is relatively inert and must be in a highly divided state to react with acids or alkalis.

This experiment was performed to determine the heat of neutralization between Hydrogen chloride (HCl) and Sodium hydroxide (NaOH). A temperature probe was used to measure the temperature of the reaction when the base (NaOH) was poured into the acid (HCl). The data was collected on logged on LoggerPro.

Purpose: To measure the heats of reaction for three related exothermic reactions and to verify Hess’s Law of Heat Summation.