Rate of Reaction of Dilute Hydrochloric Acid and Sodium Thiosulphate
To investigate the change in rate of reaction between DILUTE HYDROCHLORIC
ACID and SODIUM THIOSULPHATE as the concentration varies.
PLAN
A chemical reaction takes place over a specific period of time i.e.
which is the time for the reactants to be formed into the products. If
the reactants take a relatively short time to form the products, the
reaction is known as a FAST one. The RATE of that particular reaction
is high. On the other hand, a reaction which takes a longer time is
known as a SLOW reaction, and as a result is known to have a LOW rate
of reaction.
There are several factors which alter can alter the speed/rate of a
reaction. These are:
-Temperature
-Addition of a Catalyst
-Size of Particles of a Solid Reactant
-Presence of Light
-Pressure
-Concentration of Reactants in Solution
I shall now look at HOW each of the above factors influences the speed
at which a reaction occurs.
TEMPERATURE- At a higher temperature, the ions within the solution
possesses greater levels of kinetic energy (movement), and
consequently, whilst they move through the solution more rapidly, they
collide a greater number of times amongst each other and also with a
greater force as well i.e. more vigorously. Therefore there is a
greater chance of success that a reaction will take place between the
two particles, and as the chances of success are increased even
further, more reactions take place, which increases the rate of
reaction as a whole.
Constant: The temperature shall be kept constant by carrying out the
experiment in the same room with windows open during both sessions
during the course of two days.
CATALYST- A catalyst is a substance which increases the speed of a
chemical reaction without being used up. Certain catalysts increase
the rate of reactions, whereas others are used to decrease the
required reaction temperature which saves energy. So, in other words,
they reduce activation energy levels. A catalyst works by increasing
the chances of particles colliding by providing a ‘sticky’ surface on
which particles stick onto and have a collision. Therefore the greater
the size of the catalyst, the higher the rate of reaction.
Constant: A catalyst won’t be used in our experiment.
PARTICLE SIZE- Obviously, as the surface area of a react...
... middle of paper ...
... which helped to minimize errors. The experiment was relatively
suitable for the task to be carried out, and it was very effective and
accurate in producing results. It could have been improved by
experimenting on a greater variety of concentrations and by measuring
the liquids more accurately and consistently.
From the evidence, there seems to be a great deal of consistency in
the averages, and almost a constant difference between these averages
throughout. Each of the readings for a particular concentration level
are very close together, suggesting that this accuracy meant that the
evidence is more than reliable enough to support the prediction. A
wide range of values was used, with repeated readings, making the data
more reliable, therefore making it more than sufficient enough to
support the prediction.
To expand on the experiment, we could investigate on other factors
which can alter the rate of reaction, such as pressure, temperature or
particle size, and as a result, we could see whether they have a
bigger impact on the rate than concentration does. This way, we would
be able to see how much of an effect concentration has in relation to
other factors.
Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid Plan: In my experiment I will measure the rate of reaction between calcium carbonate and hydrochloric acid. The rate of the reaction is the speed that the reaction takes place so by measuring the rate I will measure the amount of time the reaction takes. Hydrochloric acid is a strong acid that is found in digestive juices in the stomach, it is also used for cleaning metals before they are coated. Calcium carbonate has a few forms including chalk and limestone the main use of these two materials is in the making of concrete, which is used for many things such as buildings. When you put calcium carbonate and hydrochloric acid together they react to form calcium chloride, carbon dioxide and water.
It is primarily excreted unchanged in the urine and has half life of 10 to 31 hours.
... physical education (J. Sproule, Ed.). Retrieved February 25, 2014, from Sage Journal website: http://epe.sagepub.com/content/11/3/257.short#cited-by
Experiment is to investigate the rate of reaction between hydrochloric acid and calcium carbonate Hydrochloric acid + Calcium Carbonate Þ Calcium Chloride + Water + Carbon Dioxide 2HCl (aq) CaCo3 (s) CaCl2(s) H2O (aq) CO2 (g) There are a number of variables in this experiment and these are listed below as input variables and outcome variables.
In 1931 Aldous Huxley published Brave New World, giving a look into a dystopian society of the future. The book is written in a modernist literary view, and is a dramatized version of the issues surrounding the world during the early 20th century. Throughout the book, literary theories and schools of criticism such as Marxist Criticism and Gender Studies can be seen in Huxley’s representation of the main characters of the story and their interactions; he shows the disparity of society when they loose their ability to feel or have emotion, and uses the inter-workings of the World State to show class differences and the consumerist society that has formed due to the importance put on economic prosperity.
from 10cm to 50cm to make it easier to see the difference in a graph.
Kohl, H., & Cook, H. D. (2013). Educating the student body: Taking physcial actvity and physcial education to school. National Research Council. Washington: National Academies Press.
When a person starts staring in one direction, shows spasm, has a blue color around the mouth, wets him or herself (incontinence), you should protect the person from injury. Cover the head, don’t put anything in his or her mouth and turn him or her on the side to help the person breathing. You must stay with the person until he or she is fully recovered.
The electric guitar has greatly impacted how music was played in the past, the present, or the future. Players can be creative and achieve a great sound from the wide variety of guitars, pickups, pedals, or amps. Whatever type of music you enjoy, everyone should appreciate the importance of the electric guitar.
My aim in this piece of work is to see the effect of temperature on the rate of a reaction in a solution of hydrochloric acid containing sodium thiosulphate.
The time taken for this to happen is the measure of the rate of reaction. We must do this several times, and change the concentration of sodium thiosulphate. The rate of reaction is a measure of the change, which happens during a reaction in a single unit of time. The things that affect the rate of reaction are as follows. Surface area of the reactants Concentration of the reactants
Effect of Temperature on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Investigation Chemical reactions are used in our everyday life, they literally keep us alive. They are used in food, respiration and everywhere else in the environment. A chemical reaction mainly occurs when reactants react together to produce a new product. The speed at which this reaction takes place is called the rate of reaction. The product produced has a number of particles in the solution that has formed from the reactants.
Amongst all the classes students are required to take from elementary to high school, the one that students are most excited to participate in is physical education. Whether the students are playing a game of tag on the playground or a friendly game of dodge ball during P.E., they are giving their bodies the exercise it needs to promote healt...
Proponents of physical education often contend their case with these and other similar arguments, but upon closer examination of the physical education system, its true use and effectiveness are highly questionable. Those who argue that physical education is integral to the nation’s health must reexamine the nation in which we live, a nation in which more than one-third of adults are obese, according to the Centers for Disease Control and Prevention. Pennsylvanian legislation has mandated physical education since 1999, but since 1999, the adult obesity rate has risen by 11%. Regardless of the proponents’ claims, physical education is not having its intended effect on public health. (Note: I am not trying to suggest that physical education is deleterious to public health. I am just showing that physical education has done a negligible job promoting health). Furthermore, physical education consumes an entire class period of a student’s day, a class period which could be spent learning one of many highly important, pertinent 21st century subjects that the Common Core has inexplicably ignored: micro and macro economics, U.S.
For all Americans, physical educational practices can be a key part in their overall health. Ba...