A serial dilution is a series of sequential dilutions used to reduce a dense culture of cells to a more usable concentration. Serial dilutions reduce the concentration of a sample in small steps or fractions.
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Dilutions worksheet 1 if i add 25 ml of water to 125 ml of a 0 15 m naoh solution what will the molarity of the diluted solution be.
Serial dilutions worksheet answers. 1 if i have 340 ml of a 0 5 m nabr solution what will the concentration be if i add 560 ml more water to it. Dilution displaying top 8 worksheets found for this concept. 3 how much 0 05 m hcl solution can be made by diluting 250 ml of 10 m hcl.
It is a common practice to determine microbial counts for both liquid and solid specimens suspensions of e. Topics you will need to know in order to pass the quiz. This quiz and attached worksheet will help gauge your understanding of the properties of serial dilution.
Most specimens have high enough numbers of microorganisms that the specimen has to be serially diluted to quantitate effectively. 0 19 m the final volume is 900 ml set up the equation from that 2 if i dilute 250 ml of 0 10 m lithium acetate solution to a volume of 750 ml what will the concentration of this solution be. Concentrations and dilutions answer key displaying top 8 worksheets found for this concept.
About this quiz worksheet. In serial dilution the density of cells is reduced in each step so that it is easier to calculate the concentration of the cells in the original solution by calculating the total dilution over the entire series. Some of the worksheets for this concept are dilutions work dilutions work dilutions work name key dilutions work w 329 concentrations and dilutions molarity and serial dilutions teacher handout laboratory math ii solutions and dilutions calculationsforsolutionswork andkey.
In a series order or interval. The teacher may wish. Dilutions worksheet solutions.
Serial dilutions are commonly performed to avoid having to pipette very small volumes 1 10 µl to make a dilution of a solution. 0 19 m the final volume is 900 ml set up the equation from that 2 if i dilute 250 ml of 0 10 m lithium acetate solution to a volume of 750 ml what will the concentration of this solution be. Coli in nutrient broth all the way to soil samples and hamburger meat.
The easiest method is to make a series of 1 in 10 dilutions. Some of the worksheets for this concept are dilutions work dilutions work w 329 dilution name chem work 15 5 dilutions work dilution work answers chemistry dilution practice dilutions work name key solutions work 2 molarity and dilution problems answers. Little pipe for moving and measuring liquids.
The power point can be used to reveal instructions to the students during the lab. 2 if i add water to 100 ml of a 0 15 m naoh solution until the final volume is 150 ml what will the molarity of the diluted solution be. Dilutions worksheet solutions 1 if i have 340 ml of a 0 5 m nabr solution what will the concentration be if i add 560 ml more water to it.
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