Essay On Effect Of Temperature On Food And Liquids

Decent Essays
Hauppauge High School
February, 1

The effect of temperature on pH in food and liquids.

Seferian , Celina

I. INTRODUCTION
By putting the food or liquids into a pan and raising the temperature of it then we may possibly see a change in pH. Temperature may have an affect on the pH of solids and liquids. All solutions will change their pH value with temperature. Temperature affecting pH is a result of the shifting of the chemical equilibrium of the components, mainly of dissociation. Dissociation is the splitting of a molecule into smaller molecules, atoms, or ions, especially by a reversible process. Before any experiment was performed, research was done and it is said that temperature does affect the pH of food and liquids. Temperature effects
…show more content…
Temperature was the key factor to this experiment.

The role of the food is what was being tested and it would need to show a change in the pH to prove the hypothesis correct.

The role of the liquids being used is to raise or decrease pH just as the food would.

Le Châtelier 's Principle states if you make a change to the conditions of a reaction in dynamic equilibrium, the position of equilibrium moves to counter the change you have made. Hence, if you increase the temperature of the water, the equilibrium will move to lower the temperature again. It will do that by absorbing the extra heat. That means that the forward reaction will be favored, and more hydrogen ions and hydroxide ions will be formed.

The table below shows the effect of temperature on Kw. For each value of Kw, a new pH has been calculated.

T (°C)
Kw (mol2 dm-6)
…show more content…
The more equal amount you use the more equal data will be received.
Amount of liquid- 1 cup of the liquid for the most accurate results. If the measurements are not the same for each trial, the results may not be as accurate as they should be.

Independent Variable:
Temperature- Temperature is being controlled at a certain degree so that the results are as accurate as possible. There was a 3 degree (plus/minus) leeway for uncertainty. Temperature is remaining constant for the most accurate results.

Dependent Variable: pH- As stated in my hypothesis, it is expected that pH change as the temperature increases. Throughout research before any experiment was performed, it is clear to see there is some type of correlation between temperature and pH.

Safety and Ethical Considerations:

There is nothing too dangerous about this. The hot plate is the only concern and hot hands will be used at all times throughout the experiment.

No chemicals are being used throughout the experiment.

The environment will not be harmed throughout the process of this experiment.

No animal or humans will be

Related Documents

  • Great Essays

    Amylase Experiment

    • 1123 Words
    • 5 Pages

    By adding more temperatures, the results become more precise as to what temperature amylase denatures at, and what temperature is the most efficient for amylase. Variations that differ from the variables in this experiment could be the effect of pH levels on enzyme activity, which would show the best pH levels for amylase to be most efficient and whether it works best at low, medium or high pH levels. The concentration of amylase would also be a variation that would show whether amylase works faster if there is more of it or not. If all of these variations were done, it would show in what conditions amylase works best at, and if the human body fits those conditions or…

    • 1123 Words
    • 5 Pages
    Great Essays
  • Improved Essays

    The acid pH levels greatly affect the whole ecosystem. It is hard for fish to adapt to the change in pH. Some fish exposed to acidic pH levels have had their reproduction system altered. pH is an indicator of water quality. The current allowable range for acidity is between 6.5 and 8.5 in pH in the Chesapeake Bay. Maryland is trying to improve storm water systems and have more vegetation areas to help filter out nutrients before getting into the Bay.…

    • 1342 Words
    • 6 Pages
    Improved Essays
  • Decent Essays

    Alka Seltzer Lab Report

    • 426 Words
    • 2 Pages

    A possible error that could have been made was not doing at least three experiments. If more experiments were done, the information would have been more accurate. Another possible error was only using two liquids. If more than two liquids were used in this experiment, then the information would have also been more accurate. A major error in this experiment was using a different starting temperature for each trial.…

    • 426 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Bch370 Lab

    • 507 Words
    • 3 Pages

    Introduction Many biological processes are pH dependent, to illustrate, stomach is at a relatively lower pH than other organs for proper function of digestive enzymes. In particular, buffer is essential for maintaining cellular functions. For instance, protein intake and metabolism generates about 70mM of H+ daily (Silverthorn, Johnson, Ober, Garrison, & Silverthorn, 2012), which could lower pH of human blood to as low as 3. To limit the drastic change in blood pH, human body has three buffer systems – bicarbonate, monohydrogen phosphate, and ammonia. Buffer is made up of weak acid and its conjugate base.…

    • 507 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Neutralize Ph Lab

    • 382 Words
    • 2 Pages

    Purpose: To find the pH of different household items and to see what substances are acids or bases. To see how different substances neutralize each other. Hypothesis: I hypothesize that cleaning products will be bases and foods and substances we ingest will be acids. Materials: • Oil • Finesse Shampoo • Anti Freeze • Drain Opener • Hand Soap • Vinegar •…

    • 382 Words
    • 2 Pages
    Decent Essays
  • Superior Essays

    It was accurately impossible to start the timer concurrently with Alka-Seltzer contacting water, therefore the timing of the rate of reaction were slightly off. Next time when this lab is performed, there should be an automatic timer which starts automatically as soon as the Alka-Seltzer contacts the water so that the rate of reaction is accurate. Second error consisted of human error. After the beaker was taken off from the hot plate when the beaker reached the certain specific temperature that was to be tested, the temperatures were not exact as the testing temperature because as soon as the beaker was lifted form the hot plate, and placed on to a colder surface, the heat transferred, causing the temperature to decrease and not be exact. Next time when this lab is performed the beaker should not be lifted from the hot plate and instead try to maintain the certain temperature of the water on the hot pate, and then drop the Alka- Seltzer.…

    • 1619 Words
    • 7 Pages
    Superior Essays
  • Improved Essays

    Chapter 1 Thesis

    • 563 Words
    • 3 Pages

    1) What is the research question? Try to State the problem as concisely as possible. I believe the problem statement is due to the technology of internet and the social impacts of nonprofit organizations, nonprofit organizations may use organizational web sites to promote advocacy and influence civic engagement. However, some researchers have announced that internet would not affect the advocacy and civic engagement.…

    • 563 Words
    • 3 Pages
    Improved Essays
  • Great Essays

    Unknown Compounds

    • 1475 Words
    • 6 Pages

    The goal of this experiment was to use chemistry to analyze an unknown compound and through testing its physical and chemical properties determine what unknown compound that was found in a landfill. This would benefit the Environmental Protection Agency because once they know what the substance was they could determine the best way to remove it from the landfill and if there were any potential safety hazards to beware of while handling the substance. This would prevent any accidents that may harm the people handling the compound and the people that live around the landfill. The other goal was to discuss the environment impact and cost of synthesizing the unknown compound.…

    • 1475 Words
    • 6 Pages
    Great Essays
  • Improved Essays

    Liver Lab

    • 544 Words
    • 3 Pages

    This experiment proved that as temperatures cooled the reaction time slowed down (http://www.ebi.ac.uk/interpro/potm/2004_9/Page1.htm). During the experience I initially put the thermometer on the bottom of the test tube which gave me the wrong temperature, so I had to redo the the test. Another error was during the reaction the liquid overflowed the sides of the test tube and it maid it hard to read the results. I would recommend that. Bibliography:…

    • 544 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Within methods of chemistry, the most common and obvious way to find the PH of a substance is to use an acid-base indicator in order to determine the pH level by comparing the indicators color to what pH it represents. An example of this is universal indicator (a mixture of a variety of other indicators) that changes a wide variety of colors depending on the pH it is subject to. This colorizing effect is somewhat like a color dye for a molecule, that changes color when it detects a specific threshold is crossed in terms of the pH of the substance, thus allowing an approximate pH to be determined. This color change is due to the molecules present in acid-base indicators responding to the changes in the overall concentration of the hydrogen…

    • 140 Words
    • 1 Pages
    Decent Essays
  • Superior Essays

    Bio 204 Case Study Review

    • 1240 Words
    • 5 Pages

    Jessica Grandier Bio 204 section 201 Case Study 1a What are the normal values for PH, Erythrocyte count, Leucocyte count, Platelet count. ( 1 point each) The normal values for PH are 7.35-7.45, the normal erythrocyte count for males is 4.7 - 6.1*10^6 /ul million and for women it is 4.2 -5.4*10^6/ ul million, Leucocyte count is 4,800-10,00 mmm^3 of blood and normal platelet count is 150,00-450,00 platelet for microliters. 1b What are the terms used for increase and decrease in PH? ( 1 point each) An increase in ph is alkalosis and decrease in ph is acidosis.…

    • 1240 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    Introduction: There is a direct relationship between temperature and pressure in gases. The relationship can be proven by measuring pressure, which is measured with a pressure sensor, and temperature, which is measured with a temperature probe. Two areas remain constant throughout this experiment, which are volume of the gas and the number of molecules the gas itself contains. In this experiment, using the constructed apparatus, an Erlenmeyer flask with an air sample will be placed in four different water baths, which vary in temperature. Following this, a mathematical relationship between pressure and absolute temperature of a gas can be determined.…

    • 839 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    The prediction for this experiment was: when the temperature hits 80 degrees Celsius, the catechol will be at its optimal absorbance. The alternate hypothesis tested for this following experiment was that there is a significant relationship between catechol and pH. In contrast, the null hypothesis states that there is no significant relationship between catechol and oxidase and pH. This hypothesis will be supported if the rate of catechol oxidase does not increase. The hypothesis was tested by observing the reaction time of catechol oxidase at four different…

    • 1142 Words
    • 5 Pages
    Improved Essays
  • Superior Essays

    The Thermodynamics of Potassium Nitrate Dissolving in Water Introduction: This experiment focuses on thermodynamics or the study of heat and molecular randomness. It helps illustrate how and why potassium nitrate (KNO3) dissolves in water. When it dissolves, it dissociates into potassium (K+) and nitrate (NO3-) ions. These ions can also recombine into solid potassium nitrate. This reaction can reach a state where concentrations of ions remain constant or Ksp; which stands for the equilibrium concentration for the solubility product.…

    • 1221 Words
    • 5 Pages
    Superior Essays
  • Superior Essays

    For pH, it was hypothesized that the optimal pH would be 7. As temperature was increased, the enzyme activity also increased. Because temperature is the measure of kinetic energy, an increase in temperature would cause an increase in kinetic energy. This means that particles are moving quickly with high entropy, which causes more collisions to happen. Due to this, there is a higher probability of substrates colliding with enzymes, thus making the reaction occur.…

    • 1717 Words
    • 7 Pages
    Superior Essays

Related Topics