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GENERAL CHEMISTRY LABORATORY

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You must have a U card with a balance of at least $25.00 before checking into lab. ... Shorts, short skirts or sandals are not allowed in lab. SCHEDULE OF EXPTS ... – PowerPoint PPT presentation

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Title: GENERAL CHEMISTRY LABORATORY


1
GENERAL CHEMISTRY LABORATORY
2
PURPOSE OF LABORATORY
  • ILLUSTRATE AND PARTICIPATE IN SCIENTIFIC INQUIRY
  • DEMONSTRATE CHEMICAL FACTS AND PRINCIPLES
  • DEVELOP LABORATORY SKILLS
  • ACTIVE LEARNING PROCESS
  • BUILD YOUR CONFIDENCE
  • LEARN AND BUILD LAB SAFETY SKILLS

3
SYLLABUS
  • See link from Chem 1151 course page.
  • GTAs Dinara Gunasekera and Matt Tjosass
  • You must have a U card with a balance of at least
    25.00 before checking into lab.
  • Bring your lab packet and Lab Notebook every lab
    day.

4
SYLLABUS (2)
  • 20 of Chem 1151 grade 150 Lab Points 120
    points for lab reports 30 points for Lab
    Notebook.
  • Makeup lab is June 28 with all reports by June 30
    (correct syllabus).

5
SYLLABUS (3)
  • Students who are repeating this course and have
    successfully completed the lab must see the
    instructor.
  • Students must pass lecture and lab separately to
    pass Chem 1151.

6
SYLLABUS (4)
  • SAFETY SAFETY SAFETY
  • Goggles must be worn at all times after pre-lab
    and before post-lab work.
  • KEEP A CLEAN AND ORDERLY LAB
  • Shorts, short skirts or sandals are not allowed
    in lab.

7
SCHEDULE OF EXPTS
  • See link from Chem 1151 course page.
  • GTA will check Pre-Lab Assignment
  • Pre-Lab Lecture, Questions
  • Lab group performs experiment(s)
  • Lab group completes analysis, calculations,
    questions, graphing
  • GTA signs Lab Notebook before each student leaves

8
LAB NOTEBOOK
  • See link from Chem 1151 course page.
  • The Lab Notebook is an original, complete and
    historical record of what you did in lab.
  • Write in ink.
  • Record data, observations, equipment information,
    accidents, errors, questions.
  • Pre-lab assignment, Analysis, Post-lab
    assignment, rough graphs, calculations

9
PRE-LAB ASSIGNMENT
  • The purpose is to help you prepare for lab.
  • The assignment consists of reading the lab
    handout, preparing your Lab Notebook and
    completing the actual Pre-Lab Assignment.
  • Students who fail to complete this work prior to
    the start of lab will not be allowed in lab that
    day. These students must complete the Makeup Lab
    on June 28.

10
PRE-LAB ASSIGNMENT (2)
  • May 19 Chap 1, Prob 73a convert to m, Prob 73d
    convert to m/s, Prob 73f convert to m2
  • May 24
  • Describe how to make 30 mL of 1.0M HCl from 6.0 M
    HCl stock solution.
  • Calculate the final temperature when 26.0 mL of
    water at 83 oC is mixed with 18.0 mL of water at
    27 oC.

11
LAB REPORT
  • See link from Chem 1151 course page.
  • A lab report is due one week after the expt was
    performed except the June 28 make-up lab is due
    on June 30.

12
MOLARITY
  • A binary solution contains a solvent (major
    component) and a solute.
  • The concentration of a solution can be described
    quantitatively by its molarity.
  • Molarity M mol solute/L soln mol/V
  • Note that mol solute MV

13
MOLARITY (2)
  • Dilution is governed by the conservation of
    moles solute in the concentrated solution and in
    the dilute solution.
  • Mols solute in conc. Mols solute in dil.
  • M1V1 M2V2 constant
  • Starting with a 4.0 M concentrated NaOH solution,
    prepare 25.0 mL of a 1.5 M soln.
  • 4.0M(V1) 1.5M (25.0 mL) or V1 9.375 mL 4.0 M
    NaOH

14
QUESTIONS?
15
NEXT
  • Safety Tape
  • Safety Quiz
  • Move to lab in Chem 301
  • Tour of lab
  • Using the top loading balance, reading a buret,
    etc
  • Check into lab
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