Priscilla KellyChem111-f03Dr. Golden09/30/14

Sugar Concentration Lab

Purpose:

The purpose of this lab is to determine the mass of percent of sugar in a sample

soda, evidence soda and a test solution. Key evidence in a murder case was

tampered with, a can of soda was a key piece of evidence obtained from the

crime scene and

Hypothesis:

A calibration curve can be used to determine the concentration of solute in an unknown solution by plotting the concentration of a known solute with the same mass and density.has been measured.\Materials:

Sample Soda

Test Solution

Evidence Soda

Procedure: To find the first known: Weight the 10mL flask and record the mass Add distilled water to 10 mL flask (until meniscus reaches 10mL mark).Record the mass of the flask with the distilled waterTo find the second known, Empty water from 10mL flask, then add 0.5 g sugar, add water and swirl until sugar is dissolved. Then add more distilled water until meniscus reaches the 10mL mark on the flask. Record the mass of the flask with 0.5 g of sugar dissolved in waterTo find a third known:Empty and rinse the volumetric flask and then add 1.0 g of sugar, add water and swirl until sugar is dissolved and add more distilled water to flask until the menisucus reaches 10 mL mark). Record the mass.

Priscilla KellyChem111-f03Dr. Golden09/30/14

Empty and rinse the volumetric flask and then add 1.5 g of sugar, add water and swirl until sugar is dissolved and add more distilled water to flask until the menisucus reaches 10 mL mark). Record the mass. Find the density of the following:0.0 g sugar /10mL water0.5 g sugar/10mL water1.0 g sugar /10mL water1.5g sugar /10mL water

Add sample soda to 10mL flask and record massEmpty the flask and add a sample of evidence soda to flask and record the massEmpty the flask and add a sample of the test solution to the flask and record the mass.Find the density of Each of your knownsSample sodaThe soda collected as evidenceThe test solution

Results:

Solutes Volume Mass

0 g sugar solute 10 mL 9.914

0.5 g sugar solute 10 mL 10.085

1.0 g sugar solute 10 mL 10.256

1.5 g sugar solute 10 mL 10.483

Sample Soda 10 mL 10.486

Evidence Soda 10 mL 10.679

Test Solution 10 mL 10.239

Discussion:

Priscilla KellyChem111-f03Dr. Golden09/30/14

Sugar & Soda Data

Solutes Volume Mass Density

0 g sugar solute 10 mL 9.914 0.9914 g/mL

0.5 g sugar solute 10 mL 10.085 1.0085 g/mL

1.0 g sugar solute 10 mL 10.256 1.0256 g/mL

1.5 g sugar solute 10 mL 10.483 1.0483 g/mL

Sample Soda 10 mL 10.486 1.0486 g/mL

Evidence Soda 10 mL 10.679 1.0679 g/mL

Test Solution 10 mL 10.239 1.0239 g/mL