# Question: How Do You Dilute A Solution To A Specific Concentration?

## How do you dilute a solution from a concentrated solution?

A dilution is a solution made by adding more solvent to a more concentrated solution (stock solution), which reduces the concentration of the solute.

An example of a dilute solution is tap water, which is mostly water (solvent), with a small amount of dissolved minerals and gasses (solutes)..

## How do you dilute a percent solution?

Solutions Based on Percentage Calculate appropriate v/v dilution using the formula C1V1 = C2V2 where C represents the concentration of the solute, and V represents volume in milliliters or ml. An example would be combining 95 percent ethanol with water to mix 100 ml of 70 percent ethanol.

## How do you concentrate a solution?

To concentrate a solution, one must add more solute (for example, alcohol), or reduce the amount of solvent (for example, water). By contrast, to dilute a solution, one must add more solvent, or reduce the amount of solute.

## What is a 1 in 10 dilution?

For example, to make a 1:10 dilution of a 1M NaCl solution, you would mix one “part” of the 1M solution with nine “parts” of solvent (probably water), for a total of ten “parts.” Therefore, 1:10 dilution means 1 part + 9 parts of water (or other diluent).

## How do you prepare a solution of stock?

A stock solution is prepared by weighing out an appropriate portion of a pure solid or by measuring out an appropriate volume of a pure liquid, placing it in a suitable flask, and diluting to a known volume. Exactly how one measure’s the reagent depends on the desired concentration unit.

## How do you find the concentration of a dilute solution?

Calculate concentration of solution after dilution: c2 = (c1V1) ÷ V. Calculate the new concentration in mol L-1 (molarity) if enough water is added to 100.00 mL of 0.25 mol L-1 sodium chloride solution to make up 1.5 L.

## How do you calculate the dilution of a solution?

Example 2: Suppose you must prepare 400 ml of a disinfectant that requires 1:8 dilution from a concentrated stock solution with water. Divide the volume needed by the dilution factor (400 ml / 8 = 50 ml) to determine the unit volume. The dilution is then done as 50 ml concentrated disinfectant + 350 ml water.

## How do you change the concentration of a 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. Increasing the solvent would decrease the concentration.

## What is a 5% solution?

4% w / v solution means 4 grams of solute is dissolved in 100 ml of solution. … 5% v / v solution means 5 ml of solute is dissolved 100 ml of solution.

## How do you make a 20% solution?

Add about two-thirds of the water you need and stir the solution with a stirring rod until the sugar is dissolved. Wait until the water stops moving, then gradually pour in more water until the solution reaches the mark beside the number of milliliters that you need.

## What does dilution do to concentration?

Dilution is the addition of solvent, which decreases the concentration of the solute in the solution. Concentration is the removal of solvent, which increases the concentration of the solute in the solution.

## How do you make a 10% solution?

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.

## What is a 1/20 dilution?

These two components proportionally combine to create a dilution. … For example, a 1:20 dilution converts to a 1/20 dilution factor. Multiply the final desired volume by the dilution factor to determine the needed volume of the stock solution. In our example, 30 mL x 1 ÷ 20 = 1.5 mL of stock solution.

## How do you find the final concentration of a solution?

1:10 becomes 1/10, for example, while 1:5 becomes 1/5. Multiply this ratio by the original concentration to determine concentration of the final solution. If the original solution has 0.1 mole per liter and the ratio is 1:5, for example, the final concentration is (1/5)(0.1) = 0.02 moles per liter.

## Why is knowing the concentration of a solution important?

The concentration of a solute is very important in studying chemical reactions because it determines how often molecules collide in solution and thus indirectly determines the rates of reactions and the conditions at equilibrium (see chemical equilibrium ). Concentration may be expressed in a number of ways.