Why would you need to dilute solutions?
Dilution is the process of decreasing the concentration of a solute in a solution, usually simply by mixing with more solvent. To dilute a solution means to add more solvent without the addition of more solute. The resulting solution is thoroughly mixed so as to ensure that all parts of the solution are identical.
Dilute the concentrate with an appropriate amount of diluting liquid, which is determined relative to the initial volume of concentrate being used. See below: For example, if we want to dilute 1 cup of concentrated orange juice to 1/4 its initial concentration, we would add 3 cups of water to the concentrate.
- A simple dilution is one in which a unit volume of a liquid material of interest is combined with an appropriate volume of a solvent liquid to achieve the desired concentration. The dilution factor is the total number of unit volumes in which your material will be dissolved.
- Stir the solution.
- Always add acid to the water, not the other way around.
- When mixing two acids, always add the stronger acid to the weaker.
- It is possible to add half the required amount of water, diluting it fully, then slowly mixing in the remaining water.
- We can make 10 percent solution by volume or by mass. A 10% of NaCl solution by mass has ten grams of sodium chloride dissolved in 100 ml of solution. Weigh 10g of sodium chloride. Pour it into a graduated cylinder or volumetric flask containing about 80ml of water.
Molarity is the number of moles of solute per liter of solution. To dilute a stock solution, the following dilution equation is used: M1 V1 = M2 V2. M1 and V1 are the molarity and volume of the concentrated stock solution, and M2 and V2 are the molarity and volume of the diluted solution you want to make.
- Serial dilution is the stepwise dilution of a substance in solution. Usually the dilution factor at each step is constant, resulting in a geometric progression of the concentration in a logarithmic fashion.
- Molarity Formula. Molarity is the most commonly used term to describe the concentration of a solution. It is equal to the moles of solute divided by the liters of solution. The solute is defined as the substance being dissolved, while the solvent is the substance where the solute is dissolved (usually water).
- Supersaturation is a state of a solution that contains more of the dissolved material than could be dissolved by the solvent under normal circumstances. It can also refer to a vapor of a compound that has a higher (partial) pressure than the vapor pressure of that compound.
The mass of the salt converted to moles divided by the liters of water in the solution would give the Molarity (M) or concentration of the solution. The simplest way to change the concentration would be to change the amount of solute or solvent in the solution. Increasing the solute would increase the concentration.
- We can dilute once, then dilute this dilution, only to dilute this dilution, and so on until we get to the appropriate concentration of cells. This is called a serial dilution. A serial dilution is a series of sequential dilutions used to reduce a dense culture of cells to a more usable concentration.
- Solubility is the maximum amount of a substance that will dissolve in a given amount of solvent at a specific temperature. There are two direct factors that affect solubility: temperature and pressure. Temperature affects the solubility of both solids and gases, but pressure only affects the solubility of gases.
- A saturated solution is a solution that contains the maximum amount of solute that is capable of being dissolved. How can you tell if a solution is saturated or unsaturated? If more solute is added and it does not dissolve, then the original solution was saturated.
Updated: 21st November 2019