Alka Seltzer Dissolving at Different Temperatures Essay example

Alka Seltzer Dissolving at Different Temperatures Essay example

Length: 3427 words (9.8 double-spaced pages)

Rating: Powerful Essays

Open Document

Essay Preview

Alka Seltzer Dissolving at Different Temperatures

The variable that I will change will be the temperature of the water
that the Alka Seltzer is put in.

For my results I will measure the time taken for the Alka seltzer
tablet to completely dissolve in water at different temperatures.

Input variables:

* Varying surface area of Alka-Seltzer tablet, i.e. if cut into
smaller pieces or crushed it will increase the surface area. (If
the surface area is increased (more powdered) the rate of reaction
also increases. This means that there are more collisions between
the solid and liquid.)

* Amount of tap water H2O used, i.e. volume (ml).

* Amount of Alka-Seltzer tablets used, i.e. quantity of tablets.
(one is used)

* Number of times the solution is stirred. (If the solution is
stirred more there are more collisions between the particles
therefore the reaction is speeded up.)

* Temperature of Water-°C. (As the temperature increases so does the
rate of reaction. By increasing the temperature, particles move
faster, i.e. they have more energy. So, they collide with more
energy and more frequently.)

* pH of Solution: Water has pH of 7 at 25°C. As the pH decreases,
i.e as the solution increases in acidity, the rate of the reaction
increases as well.

Output Variables:

Rate of reaction depends on all the 6 points I have stated above:

* If the surface area of the tablets is increased by crushing, the
particles around it in the solution will have more area to work
on, and the rates of reactions will increase because there will be
more collisions. Complete reaction will finish faster.

* The more amount of water used as we increase the temperature, the
quicker the tablets will dissolve because there will be more water
particles to collide with. So the rate increases.

* If the amount of tablets being used is increased for the same
amount of water, i.e as concentration increases, rate will
increase as well because there will be more collisions between

* If the water with Alka-Seltzer tablets are stirred during the
reaction, then the rates of reactions will increase because the
particles will be forced to make contact with each others and
react much quicker, rather than take their time to make contact,
and therefor...

... middle of paper ...

... water bath could have been used, because I could set it
to my required temperature. Also it would mean that the solution
inside it would reach the exact temperature or close to It., and not
increase or decrease once the water inside it has reached

It was also very difficult for me to observe exactly when the
Alka-Seltzer tablets had totally dissolved and consistently decide
this for every result obtained. This was probably the main factor that
would have decreased the accuracy of my readings. To avoid this
happening I would have needed to use specialized piece of equipment
which would tell me exactly when the tablet was dissolved

Overall, I can come to firm conclusion from my results that support my
prediction and background knowledge that: As the temperature
increases, less time will be required for a reaction to take place
i.e. the rate of reaction increases.

To improve the experiment overall I could use distilled water to avoid
inaccuracies related to the hardness of tap water. I believe I should
get a straight line curve.

Another improvement I could have made is to increase the range of the
temperatures investigated. (10°C to 100°C).

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

The rate at which Alka-Seltzer tablets reacts with water Essay examples

- The rate at which Alka-Seltzer tablets reacts with water Statement of problem The aim of the experiment is to find out the rate at which Alka-Seltzer tablets react with water. The input variable that I will change is temperature. The output variable will be measured by the time it takes for the Alka-Seltzer tablets to dissolve. Input variables In this experiment there are two main factors that can affect the rate of the reaction. These key factors can change the rate of the reaction by either increasing it or decreasing it....   [tags: GCSE Chemistry Coursework Investigation]

Powerful Essays
3766 words (10.8 pages)

Alka Seltzer : A Tablet Essay

- Alka-Seltzer Rockets Instructor: Mr. Thompson Due 4/1/16 Science Research Jamal Matthews Jeremy Alpert Sophia Tannenbaum Abstract Alka-Seltzer® is a tablet that can be taken to relieve stomach pain from indigestion. Our experiment was designed to test the hypothesis that if the amount of Alka-Seltzer® increased, then the time it would take for the cap to pop off the film canister would decrease. In our experiment, we changed the amount of Alka-Seltzer® from zero tablets, to one quarter tablet, to one half tablet, and then to one full tablet....   [tags: Carbon dioxide, Carbonate, Aspirin, Rocket]

Powerful Essays
1330 words (3.8 pages)

Speeding Up the Dissolving Process Essay

- Speeding Up the Dissolving Process 1.Planning Problem: What speeds up the dissolving process. Hypothesis: I think these factors will affect the dissolving process: vTemperature at which the reaction is carried out. v Particle size of the solute. v Stirring of the solution. However in my investigation, I am investigating temperature and the particle size of the solute. Prediction From using my scientific knowledge and understanding, if the particle size of the solute is smaller, the particles can easily diffuse with the solvent's particles and fill in the spaces between them....   [tags: Papers]

Free Essays
676 words (1.9 pages)

Essay about Speed of Dissolving Jelly

- Speed of Dissolving Jelly Introduction The investigation I have to do is I have to investigate what affects the speed at which the jelly will dissolve in water. This investigation will be using the theories we have covered on the rates of reaction and the collison theory. I am going to try to get the jelly to dissolve quicker by increasing the surface area. I predit that when increasing the surface area of some jelly, I think each time I change the surface area then the time the jelly dissolves will be increased....   [tags: Papers]

Free Essays
678 words (1.9 pages)

The Rate of Reaction When Dissolving Sugar Essays

- The Rate of Reaction When Dissolving Sugar Introduction I have been asked to perform an investigation on the length of time it takes for a certain amount of sugar to dissolve in a certain amount of water at different temperatures. I will investigate whether the time taken at one temperature and another will be the same, quicker or slower using scientific methods. Identifying Key Factors ======================= The factors that would affect the dissolving rate are: - · Volume of water The larger the volume of water, the quicker the sugar will dissolve because there is more particles for the sugar molecules to collide with....   [tags: Papers]

Free Essays
711 words (2 pages)

Measuring Temperature On Temperature And Temperature Essay

- Measuring temperature. In this essay, my chosen topic is measuring temperature. This includes what temperature is, the different methods of measuring temperature that can be used, how to do this and the advantages and disadvantages of all methods relating to set guidelines for example NICE guidelines and those of the Royal College of Nursing and National Health Service. Body temperature is the average core temperature of the human body which is usually around 37 degrees. According to Marieb and Hoehn, 2010, body temperature shows the balance between heat production and heat loss....   [tags: Temperature, Thermometer, Health care, Human body]

Powerful Essays
987 words (2.8 pages)

Rising Temperatures Threatens Life on Earth Essay

- Global warming refers to a steady rise in the earth temperature. Life on earth thrives on a temperature of between 30-45 degrees. A rise in the temperature therefore threatens the life on the planet and destabilizes several features that sustain the same. Since 1971, the temperature has risen steadily owing to fraudulent utilization of resources on earth leading to the emission of poisonous gases. The ecology has a mechanism of sustaining the life within it; the earth has an atmosphere that maintains the temperature among other fundamental features of the planet that sustains life (Schlossberg, 55)....   [tags: global warming, emission, environment]

Powerful Essays
1786 words (5.1 pages)

Solubility Equilibrium Is An Equilibrium Constant For A Solid Dissolving

- Solubility Equilibrium is an equilibrium constant for a solid dissolving in an aqueous solution. When there is a solid before the equilibrium sign and dissolved products after the equilibrium sign, it is talking about the solubility product. Also, referred to as Ksp. To solve Ksp you need the concentration of the two dissolved products. The equation of Ksp is... aA(s)⇌cC(aq)+dD(aq) Ksp= [C]ᶜ[D]ᵈ As, you can see pure solids and liquids are not included in the Ksp equation because they are already accounted for in the equilibrium constant....   [tags: PH indicator, PH, Acid, Equilibrium chemistry]

Powerful Essays
763 words (2.2 pages)

Corporal Punishment : A Humanist Perspective Part One Written By Leaon F Seltzer

- According to Parenting Without Punishment: A Humanist Perspective part one written by Leaon F Seltzer discusses the scientific evidence against disciplining a child physically is indisputable. In others words, corporal punishment in a child development can affect the child’s growth. Not only is beating a helpless, dependent child morally questionable, it is also repeatedly been shown to be counter-productive. However, corporal punishment leads the child to do the wrong things because its showing harmful to the child’s sense of self and can damage its inflicts on the child....   [tags: Developmental psychology, Psychology]

Powerful Essays
706 words (2 pages)

Essay about Temperatures Influence on Reaction Rates

- Temperatures Influence on Reaction Rates For my first preliminary experiment, I had to investigate the affect of temperature of sodium thiosulfate and hydrochloric acid against rates of reaction. The chemical equation for this is: [IMAGE] Sodium thiosulfate + hydrochloric acid sodium chloride + sulfur dioxide + sulfur + water [IMAGE] Na2S2O3(aq) + HCL(aq) NaCl(aq) + SO2(aq) + S(s) + H2O(l) The solid sulfur (S(s)) formed in this reaction makes the colourless solution go cloudy....   [tags: Papers]

Free Essays
977 words (2.8 pages)