Chemistry Laboratory II
Keywords |
Classification |
Keyword |
OFICIAL |
Chemistry |
Instance: 2018/2019 - 2S
Cycles of Study/Courses
Teaching language
Suitable for English-speaking students
Objectives
Development of laboratory skills and interpretation, discussion, treatment and presentation of experimental results, both individually and as a group. Integration of the knowledge introduced and apprehended in the curricular units Laboratory of Chemistry I (Q1003), Chemistry I (Q1009) and Chemistry II (Q1011).
Learning outcomes and competences
Ability to perform the most usual operations in a chemistry laboratory as well as to treat and discuss the obtained results.
Working method
Presencial
Program
This course consists of practical classes with 2 hours each, in which the following practical assignments will be carried out, according to the following schedule:
Class 1 – Course presentation and assessment rules.
Classes 2, 3 e 4 – Practical assignments.
Class 5 – Complete report of one of the practical assignments carried out in previous classes.
Class 6
– Explanation and discussion of practical assignments 4, 5 and 6.Classes 7, 8, 9 – Practical assignments.
Class 10 – Complete report of one of the practical assignments carried out in previous classes.
Class 11 – Discussion of the reports. Clarification of doubts.
Classes 12 e 13 – Practical individual assessment.
Practical Assignments:
- Titration of an aqueous solution of HCl with borax
- Recycling of aluminium
- Determination of the rate constant of the methyl acetate hydrolysis reaction
- "Iodine clock" reaction – method of initial rates
- Determination of the molar enthalpy of formation of solid ammonium chloride
- Electrochemistry experiments: galvanic cells and corrosion
Mandatory literature
Vários (compilado por Jorge Gonçalves); Laboratório de Química II – Notas de Apoio aos Trabalhos Práticos, Departamento de Química e Bioquímica, FCUP, 2018
Complementary Bibliography
Eduardo Marques; Notas sobre Erros e Tratamento de Dados em Química, Departamento de Química e Bioquímica, FCUP, 2006
Simões José A. Martinho 070;
Guia do laboratório de química e bioquímica. ISBN: 9789727574872
Teaching methods and learning activities
Practical laboratory classes
Evaluation Type
Distributed evaluation without final exam
Assessment Components
designation |
Weight (%) |
Teste |
40,00 |
Trabalho laboratorial |
60,00 |
Total: |
100,00 |
Amount of time allocated to each course unit
designation |
Time (hours) |
Estudo autónomo |
53,00 |
Frequência das aulas |
28,00 |
Total: |
81,00 |
Eligibility for exams
The classes of this curricular unit are mandatory. To obtain eligibility the student needs to attend ¾ of the classes, and have a positive evaluation in 2/3 (4 out of 6) of the practical laboratory assignments.
Calculation formula of final grade
Due to its practical character, the discipline relies only on distributed assessment, and has no final exams.
The student must obtain positive grades in at least 2/3 of the laboratory assignments. The grade for each practical assignment (group work) is calculated based on their preparation, laboratory performance and on the respective report. The average of the classifications obtained in the n (n ≥ 4) practical assignments leads to a grade designated by NTP.
The laboratory grade (NLAB) is calculated using NTP and the grades of two complete reports (NR1, NR2), according to the following equation:
NLAB = 0.70 NTP + 0.15 NR1 + 0.15 NR2
As additional evaluation element, each student having NTP ≥ 10 will have an individual practical assessment, with a numerical grade (NPI), which cannot be < 8 (out of 20). The final grade is calculated as
NF = 0,60 NLAB + 0,40 NPI
To obtain approval, the following requirements have thus to be fulfilled: NTP ≥ 10 (out of 20), NLAB ≥ 10 (out of 20), NPI ≥ 8 (out of 20) and NF ≥ 10 (out of 20).
Classification improvement
Given the laboratory nature of this curricular unit, the different assessment components can only be improved by a new frequency of the curricular unit in another school year.