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Lab report on volumetric analysis, Lab Reports of Chemistry

LaSalle CollegeChemistry

this is a lab report on volumetric analysis

Typology: Lab Reports

2021/2022
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Dawson College
Department of Chemistry and Chemical Technology
Laboratory Report
Experiment # 06
Experiment Title: Identification of
Anions and Cations
Lab report done by: Aaida Hossain (2132500)
Partner: Rosalie Meunier, Florence Baldumbide
Presented to: Matthew Hachey
202-NYA-05, Section 03003
Date of the Experiment: 27-10-2021
Date of the Lab Report Submission: 03-11-2021
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Dawson College

Department of Chemistry and Chemical Technology

Laboratory Report

Experiment # 06

Experiment Title: Identification of

Anions and Cations

Lab report done by: Aaida Hossain (2132500) Partner: Rosalie Meunier, Florence Baldumbide Presented to: Matthew Hachey 202-NYA-05, Section 03003 Date of the Experiment: 27-10- Date of the Lab Report Submission: 03-11-

1.0 Material  Safety Glasses  Lab coat  Test tube rack  Medium test tubes (9)  Blue litmus paper  Red litmus paper  Glass rod  Stirring Rod with rubber policeman  Beaker (400 mL)  Hot plate  Paper  Pen  Tap water  Magneson reagent  Methylene Chloride  NH (^) 4 OH 6M  HCL 6M  NaOH 6M  BaCl 2 0.1M  HNO 3 6M  ( NH ¿¿ 4 ) 2 MO 4 ¿ 1M  (^) FeCl 3  K 4 [ Fe ( CN ) 6 ] 0.2M  (^) Zn^2 +¿¿  (^) Mg^2 +¿¿  Ca ( OH ) 2 (limewater)  (^) I −¿¿  (^) P O 43 −¿¿  (^) C O 32 −¿¿  (^) S O 42 −¿¿ 2.0 Procedure  Preparation i. Fill a 400 mL beaker with 300 mL of tap water ii. Put the water on a hot plate to boil. This will be our hot water bath iii. Place the test tube rack on a piece of paper iv. Insert all your test tube into the rack v. Label them on the paper using a pen  Part A: Confirmation tests for the cations

  1. Test for (^) Fe^3 +¿¿ i. Add 1 mL of the (^) Fe^3 +¿¿^ test solution found on the reagent bench into your test tube

iv. In the fume hood: Slowly pour in 1 mL of HCL^ 6M into the test tube containing the (^) C O 32 −¿¿^ solution, making sure that it does not react. v. Immediately cover the tubes head with the sopper to get the maximum amount of gas into the lime water vi. Shake the test tube containing to two solution to initiate the reaction vii. Remove the stopper once the reaction is completed  Part C: Identification of ions in an unknows solution

  1. Record the number of the unknown sample
  2. Repeat the confirmatory test described on part A or B (depending on if you chose anion or cation) using the unknown solutions in place of the test solutions.
  3. Based on the results, identify the ions present in the unknown 3.0 Results Table 1: Part A and B confirmatory test results The table below compiles all the data for the section A and B of the experiment based on our observations. Ion Reagent Added Confirmatory Results (Observation) Fe 3 +¿¿ (^) 10 drops of NH 4 OH^ 6M^ Brown gel precipitate Zn 2 +¿¿ (^) A few drops of HCL 6M 3 drops of K 4 [ Fe^ (^ CN^ ) 6 ] 0.2M Powdery white precipitate Mg 2 +¿¿ (^) 3 drops of magneson reagent NaOH 6M Blue particles floating in liquid I −¿¿ HCL 6M 1 mL FeCl 3 1 mL methylene chloride Purple bottom layer and bronze/orange-ish top layer S O 4 2 −¿¿ (^) 1 mL HCL 6M 1 mL BaC^ l 2 0.1M Powdery white precipitate P O 4 3 −¿¿ (^) 1 mL HNO 3 6M 1 mL ( NH^ ¿¿^4 ) 2 MO 4 ¿^ 1M Yellow powder-like precipitate C O 3 2 −¿¿ 1 mL Ca^ ( OH^ ) 2 (limewater) 1 mL HCL 6M Cloudy white precipitate Table 2: Part C identification of ions in an unknown solution The table below compiles all the data for the section C of the experiment based on our observations.

Sample

number:

Ions tested

for:

I

−¿¿ S O 4 2 −¿¿ P O 4 3 −¿¿ C O 3 2 −¿¿

Ions

present:

no yes no no 3.1 Sample calculations No calculations were required for this experiment since all the data are based upon our observation in the laboratory.