The two solutions were combined in a microwave tube and put in the microwave for 30 minutes at 80oC. The solvent was evaporated under reduced…
This then leads to the fact that the partial negative and positive parts of the water molecule can break the bonds of ionic and polar molecules which causes them to dissolve within the…
6.What are the various parts of a solution? There is the solvent which has the greatest abundance and there is the solute which is what is being dissolved. 7.Distinguish between an unsaturated, saturated, and supersaturated solution. Saturated is when it does dissolve in the solvent, supersaturated is when the solute does not dissolve in the solvent and unsaturated is when some of the solute dissolves in the solvent.…
Methods For this experiment, 100 ml of orange juice, and 100ml of water were measured out. The temperatures of the liquids were the same. Next, the ph levels of both liquids were measured. One Alka seltzer was dropped in the water and one in the juice, and timed how long it took to dissolve.…
surface area vs rate of time Introduction: In the investigation an experiment is conducted investigate if the breaking of alka seltzer into ½, ¼ and none effect the time it dissolves. The context of the problem is the time it dissolves to have the medicine show its effect. This problem exist in real life as people take alka seltzer to relief heartburn, acid digestion and stomach aches.…
These results show that the gummy bear was hypertonic compared to the pure water solution but was hypotonic to the 30% and 50% salt water concentrated solutions. Thus, in order to create an equilibrium in these solutions, water flowed into the gummy bear in the first solution and flowed out of the gummy bear in the other two solutions. In brief, the higher the solute concentration in comparison to the gummy bear, the more the water would flow out to create a isotonic solution due to the process of…
22.5 27 385 629.78 -119.95 2 20 .75 23.5 30.9 642.45 1043.39 -132.36 3 20 1 22.6 34.9 1079.69 1747.14 -166.394 4 20 1.5 23 39.1 1448.29 2320.59 -147.5 Table 2: Average enthalpy of dissolution -141.25 KJ/mol Trial Hot H2O (mL) Cold H2O (mL) Tihot/ Ticold (celsius) Tf (celsius) q (J) 1 50 50 Table 3 Table 2 and 3: ∆T, the amount of H2O, and amount of MgCl2 used was recorded.…
To be soluble means that it is able to be dissolved. There are three different possibilities that can happen. The first one is that a dilute solution. That happens when the solution has less solute than the maximum amount that it is able to dissolve. The second one is saturated.…
Increasing the temperature of a solvent speeds up the movement of its particles. This speeding up will cause more solvent particles to collide into the solute. Under those circumstances, solute particles end up breaking loose and dissolve faster. Temperature usually affects solubility rates. Heating up the solvent gives the molecules more kinetic energy.…
Solubility - Fat was soluble in oil. Soap was not soluble in oil. Fat was not soluble in water.…
Does the type of liquid affect how fast an ice cube melts? Does the type of liquid affect how fast an ice cube melts? In an experiment (not ours) involving three liquids, pop melted the ice within it the fastest out of the three. Molecules cause ice to melt in a pretty simple way. When salt is thrown on snow or ice, it prevents the ice or snow from freezing over once again.…
The theoretical concepts that underlie the Hot Ice experiment involve a supercooled, supersaturated aqueous solution becoming a solid. When a liquid is cooled beyond its freezing point but remains liquid is known as supercooling or undercooling, and being supersaturated occurs when the solutes in a solution exceed the saturation point. The sodium acetate in a supercooled state will rapidly change into a solid with the addition of physical energy or a nucleation site. During the transformation of the liquid supercooled solution into solid crystalline formation produces heat in an exothermic reaction, hence the name hot ice.…
The Thermodynamics of Potassium Nitrate Dissolving in Water Introduction: This experiment focuses on thermodynamics or the study of heat and molecular randomness. It helps illustrate how and why potassium nitrate (KNO3) dissolves in water. When it dissolves, it dissociates into potassium (K+) and nitrate (NO3-) ions. These ions can also recombine into solid potassium nitrate. This reaction can reach a state where concentrations of ions remain constant or Ksp; which stands for the equilibrium concentration for the solubility product.…
The Calorimetric Determination of Enthalpy and Entropy Changes of the Thermal Decomposition of Sodium Sulphate Decahydrate Abstract Sodium sulphate decahydrate thermally decomposes to anhydrous sodium sulphate at 50⁰ C and cools to form anhydrous sodium sulphate. Using Hess's Law the enthalpy and entropy changes of this process can be determined in order to deduce the spontaneity of the reaction. The transition temperature was determined by melting the hydrated crystals at 50⁰ C and allowing them to cool until a constant temperature was reached. The molar enthalpy and molar entropy changes were determined using calorimetric principles. Different weights of both decahydrate and anhydrous crystals were added to water and the temperature changes…