Solutions are a combination of solvents and solutes. When a solute dissolves into a solvent, the combined product of the two reactants is called a solution. The definition of a solute is the reactant that's being dissolved. The only difference from a solute and a solvent is that the solvent is the one that's doing the dissolving. Molecules randomly flow in all directions until there is an equal concentration throughout the solution. The dissolving process can vary depending on certain factors. Temperature, pressure, and surface area all affect the dissolving process. Increasing the pressure causes the solute to be increased in the solvent, because the pressure forces the remaining gases into the solute. Therefore, pressure increases the solubility of the solution. Increasing the temperature causes the molecules to gain energy; the solvent molecules contact the solute particles more frequently. Increased surface area means that more of the solute is exposed to the solvent, dissolving the solute more quickly.
As stated above, the combination of solvents and solutes result in a solution. The solution then has a certain concentration. There are a number of ways to measure the concentration of a solution. There is molarity, parts per million, grams per liter and percent composition. To find the molarity of a solution, you just simply divide the moles of the solute by the liters of the solvent (moles/liters). Percent composition is calculated by dividing the mass of the compound by the total mass (mass of compound/total mass). Parts per million is calculated by finding the mass of the solute in grams and dividing it by the mass of the solvent and solute in grams, and then multiplying it by one million ((grams of solute/grams of solvent+solute)*1,000,000). A certain species of crabs are kept as pets. These crabs are usually salt-water creatures. The owner must realize that this creature must live in a solution...
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