Type
Essay
Pages
9 pages
Word Count
2771 words
School
University of california
Course Code
BIOTECHNOLOGY

Lab Report

November 19, 2020
FACULTY OF SCIENCE AND NATURAL RESOURCES
SCIENCE COMPLEX
BIOTECHNOLOGY PROGRAMME (HG07)
SEMESTER 1 2019/2020
LABORATORY REPORT 1
NAME : MILA ATIQAH BINTI MANSUR
MATRIC NO. : BS19110062
TITLE : PREPARING SOLUTIONS
LECTURERS NAME : ASSOC. PROF. DR. ZALEHA ABDUL AZIZ
DEMONSTRATOR NAME : FLORISA LANDA
SUBJECT : BASIC BIOTECHNOLOGY (SY12103)
DATE OF EXPERIMENT : 24 SEPTEMBER 2019
DATE OF SUBMISSION : 15 OCTOBER 2019
INTRODUCTION
A solution is defined as a homogenous mixture of two or more substance which may
exist in any phase. It also consists of a solute and a solvent. A solute is a substance that
dissolved in the solvent and the amount of solute that can be dissolved in solvent is called its
solubility (Anne, 2019). When two liquids dissolve in each other, the major component is called
the solvent and the minor component is called the solute. There are three types of solutions
which are gaseous, liquid and solid solutions. Meanwhile a dilution is a solution made by
adding more solvent to a more concentrated solution which called a stock solution and this
will reduces the concentration of the solute. For instance, tap water is a dilute solution because
it is mostly water with a small amount of dissolved minerals and gasses.
There are so many different measures of solution concentration that exist because
these solutions play important roles in any reaction, especially in biotechnology and chemistry
field. Usually, the solutions are prepared at a particular concentration to ensure an optimal
condition for a reaction to occur. The concentration of solution can be measured by a few
units of expression such as Molarity (M), Molality (m), Normality (N) and parts per million
(ppm). Molarity is defined as the number of moles of solute per litre of solution. Meanwhile,
molality is the number of moles of solute per kilogram of solvent and normality is the number
of mole equivalents per litre of solution. Although their spellings are similar, molarity and
molality cannot be interchanged. Molarity is a measurement of the moles in the total volume
of the solution, whereas molality is a measurement of the moles in relationship to the mass
of the solvent (Carolina, 2018). When the solute is present in trace quantities, it is easy to
express the concentration of solutions in parts per million (ppm). In samples of water from
the environment, for example, concentrations of metal ions can be in the range of a few parts

Subscribe Now

Sign up to view full document

View Document