The secrets of chemical titration by Rossella Castellano https://padlet.com/rossella_castellano/6jcpssj63xxa Descrivere sinteticamente il progetto en-us 2018-04-23 06:29:46 UTC 2023-01-20 03:50:46 UTC hello@padlet.com Title ? rossella_castellano https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254255445 2018-04-23 06:33:42 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254255445 GROUP 6 rossella_castellano https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254256045 MEMBERS?
Materials?
Objectives?
Outcomes? etc.
Add your notes, photos, ideas and anything you think it's useful for this project.]]> 2018-04-23 06:36:54 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254256045 Purpose of the experiment https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254463077 Amatucci, Betti, Salvadori.
Hi guys, are you hopeless at chemistry? No problem, we are here to help you! 
We are the students of 4B of the chemistry course of ITC Cattaneo in San Miniato. 
We are in the chemistry lab and we want to explain you how to carry out a common laboratory experiment, "titration". Titration is an analytical method belonging to the classical analysis, whose purpose is to determine the concentration of unknown species by the experimental measurement of the volume of a solution with determined concentration using an indicator and thus determing the equivalence point. 
First of all, let's see the materials we need and the steps we must follow to perform the experiment 

]]> 2018-04-23 15:46:01 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254463077 https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254496541 2018-04-23 16:45:34 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/254496541 Titration https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/255523946 In this video we watched a student carrying out a titration. We noticed a change in the colour and we know that it means that the mixture has reached the neutral point. The solution was colourless at the beginning and then it turns into a light pink.  To make a titration we need:
  • A burette
  • A beaker
  • A small magnet
  • A plate in order to use the stir function. 
Follow these steps to do a titration:
  1.  Clean the burette with sodium hydroxide (NaOH) and then fill the burette with it.
  2. Fill a beaker with hydrogen chloride (HCl) and put a little magnet in.
  3. Add just 2-3 drops of indicator in the beaker and open the little stopcock on the burette.
NaOH + HCl → NaCl + H2O


Lorenzo Mascagni, Laura Caponi, Elisa bozzi
]]> 2018-04-26 06:46:53 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/255523946 Questions about titration experiment. (BETTI JACOPO) jacobetti_marti https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257342556
  •  What are the materials used in a titration experiment?       A) Burette and beaker.                                  B) Pipettes and microscope.    
    •            C) Bunsen Burner        and centrifuge.
                 D) Test tube and thermometer.

    2. What is the purpose of a titration experiment?

    3. Where does a titration experiment normally take place?
    A) In the classroom.
    B) In the Science laboratory.
    C) In the Chemistry laboratory.
    D) In the Physics laboratory.

    4. What happens during a titration experiment?


    ]]>     2018-05-02 16:38:30 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257342556     jacobetti_marti https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257345651 2018-05-02 16:45:17 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257345651 jacobetti_marti https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257349676 What are the materials used in a titration experiment?]]> 2018-05-02 16:53:53 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257349676 Titration https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257702535 Baronti, Paduano, Fontana,
    Our objective is to perform the experiment.
    First of all, we start with the burette.  We put NaOH (Sodium Hydroxide) in the burette, up to zero of the burette scale. Using a graduate pipette, we put 20 ml of HCl (hydrochloric acid) in the beaker adding a little water. We also add 2/3 drops of phenolphthalein indicator.

    ]]>     2018-05-03 15:15:50 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257702535     Laboratory glassware (group 3). https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257711744 The flask belongs to the laboratory glassware . It is very common and  precise. It containes substances, for example chloride acid as in this photo. (battini ilaria )]]> 2018-05-03 15:33:16 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257711744 Laboratory glassware (group 3). https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257715017 The flask below can have  different graduation markings. The most common ones are 100ml, 500ml and 1000ml.
    (battini ilaria)]]>     2018-05-03 15:39:33 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257715017     Laboratory glassware (group3). https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257717273 The beaker is the most used item in a laboratory . It's graduated and is used to make solutions.(battini ilaria)]]> 2018-05-03 15:43:42 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257717273 Paduano: https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257751040 1- What is titration for?
    2- Why do we put phenophthalin?]]>     2018-05-03 16:53:08 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257751040     Questions for titration experiments https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257795834 1. Did you like this video ? Why?

    2.Why has the solution changed its colour  during the titration? 

    3.Did you understand how a titration happens ? Yes or no ? If not ,why?    
    (battini ilaria)]]>     2018-05-03 18:22:01 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257795834     LABORATORY GLASSWARE ( GROUP 3 ). https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257799070 For a titration experiment we have used : stir, beaker ,burette , a metal support , a small magnet , 1 flask with HCl 0,1 M , 1flask with NaOH  0,1 M , phenolphtalein ( used to make the colour change ), water , Peleus ball , bubble  pipette .
    OBJECTIVE : Our objective is to prepare materials and instruments to carry out a successful experiment.
    ACTIVITY : we have prepared instruments and the substances to be used on the the work bench neatly .
    RESULTS : Our objective has been reached and the other students are now able to perform the experiments.

    Battini Ilaria , Di Profio Federica , Raffa Manuel ]]>     2018-05-03 18:29:13 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257799070     CALCULATIONS https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257836034 MEMBERS:Lorenzo Cammisa, Nicola Coltelli, Federico Fogli.
    MATERIALS: to do the calculations, we need a periodic table, a calculator, a pen and a sheet to take notes.
    OBJECTIVES: Find the final concentration and the turning point.
    OUTCOMES: We have seen the turning of the indicator and we have taken notes of the colour change and concentration of the products. We have found the final concentration.  
    NOTES: 
    -Turning: 22,6 mL
    -Concentration:(NaOH: 0,1M); (phenolphthalein: 0,1M); ( HCl 0,1M)
    CALCULATIONS: v1*c2=v2*c2
    c2= 20Ml* 0,1M/22,6(colour change)=0,088mol/L]]>     2018-05-03 20:17:57 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257836034     Small magnet https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257846957 This is a small magnet that we put in the beaker that is situated on the metallic stir, so it is attracted and it can shake the solution. 
    (Di Profio Federica)]]>     2018-05-03 21:09:11 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257846957     Bubble pipette https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257847473 We can use this tool to take a definite quantity of substance, in this case a volume of 20ml.
    (Di Profio Federica)]]>     2018-05-03 21:11:46 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257847473     Peleus ball https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257848023 It is anchored on the top of the bubble pipette.
    (Di Profio Federica)]]>     2018-05-03 21:14:42 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257848023     Distilled water https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257848321 This type of water is used only to dilute the analyzed substance. (Manuel Raffa)]]> 2018-05-03 21:16:07 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257848321 Phenolphtalein https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257848849 It is a particular substance used to make the colour of a substance change, and so to identify what type of substance is. (Manuel Raffa)]]> 2018-05-03 21:18:56 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257848849 Burette https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257849208 With this tool we can measure a precise volume, and we can know the quantity of the substance we are putting in the beaker. (Manuel Raffa]]> 2018-05-03 21:20:56 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257849208 Titration's questions https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257937647 1 - What is the purpose of the experiment? 
    2- What instruments do we use to perform it? 
    3-How does titration take? 
    4-What chemical compounds must we prepare?
    DARIO AMATUCCI]]>     2018-05-04 07:38:54 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257937647     QUESTIONS ABOUT TITRATION EXPERIMENTS https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257961579 (LORENZO CAMMISA)
    1- What is titration?
    2-What are the main laboratory tools used for titration?
    3-How do the colour vary during the titration?

    ]]>     2018-05-04 09:30:47 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/257961579     GROUP 6 (Martinelli, Poggianti e Cantalino) https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/259350659 Our objectivis to clean the glassware used in the experience. We only use distilled water for washing]]> 2018-05-09 16:16:12 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/259350659 QUESTIONS ABOUT TRITATION: https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/264210223 1) Do you think that this work is been useful?
    2 )Would you like do this experiment on your own?
    3) Do you like the final video? 
    (DI PROFIO FEDERICA)]]>     2018-05-29 10:56:17 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/264210223     Questions: https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/264210877 1) Do you like the experiment of titration?
    2) Is the video funny and useful?
    3) Have you learn what is the titration?
    ( Manuel Raffa) ]]>     2018-05-29 10:59:39 UTC https://padlet.com/rossella_castellano/6jcpssj63xxa/wish/264210877