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marble chip and hydrochloric acid experiment method
results of the experiment of marble chips
the effects temperature has on reaction rate
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I have been asked to investigate how the temperature of an experiment
affects the rate of reaction. In the experiment I will do it as the
temperature of the hydrochloric acid.
How Does the Temperature Affect the Rate of Reaction?
Introduction
I have been asked to investigate how the temperature of an experiment
affects the rate of reaction. In the experiment I will do it as the
temperature of the hydrochloric acid.
Reaction rates can be explained by the Collision Theory. The rate of
reaction depends on how often and how hard the reacting particles
collide with each other. Basically the particles have to collide in
order to react.
If the temperature is increased, the particles will have more energy
and so will move quicker. If they're moving quicker, they will have
more collisions.
Planning
========
Variables
---------
The variables that may affect my investigation are:
· The temperature
· The size of the pieces of marble chips
· How much hydrochloric acid you use in the flask
The variable that I am going to investigate is the temperature. This
is because there is more of an advantage due to the fact that there is
more of a range of temperature than there is in the size of marble
chips you use or the amount of hydrochloric acid you use.
Prediction
I predict that when I increase the temperature of the experiment, the
reaction will take place faster. This is because when the temperature
increases, the particles will all mov...
The purpose of this lab was to calculate the specific heat of a metal cylinder
because of plain view. In the second case that we are going to argue, which
For part C, the concentration of was determined to be 1.01 mol/L, 0.973 mol/L, and 1.158 mol/L. These results show a relatively closed to the accepted 1.00mol/L of NaOH. The differences of these results are understandable since the concentration of NaOH would changes over time because during the transfer of NaOH powder in part A, it was exposed to the air, thus it could reacts with CO2 in the atmosphere to produce Na2CO3 and water, therefore, changing the concentration of NaOH. Furthermore, the NaOH could also react with the glass thus it wills also reducing its concentration. However, all of the concentration of NaOH that was determine are maximum of 0.158mol/L differences compare to the standard 1.00 mol/L, therefore, it can be concluded that the result are accurate.
The purpose of the lab is to understand how to calculate the calorimeter constant by using a calorimeter. This allows us to analyze the heat reaction of different substances. Calorimetry is a word that comes from both Latin and Greek. The prefix “Calor” in Latin signifies heat and the suffix “metry” in Greek means measuring. Therefore the word itself translates to measuring heat. Joseph Black, was the first scientist to recognize the difference between heat and temperature. Energy is always present in chemical and physical changes. The change of energy that occurs when there is a chemical change at constant pressure is called enthalpy. Enthalpy changes , as well as physical and chemical changes, can be measured by a calorimeter. The energy that is released or absorbed by the reaction can be either absorbed or released by the insulating walls of the instrument.
Well, this looks like its using some calculations so what I would do is take my 0.045 M and equal it to the 0.25 mL of NH3 and multiply that by 45.0 mL and multiply it by 10 with an exponent of negative 3. Once all of that is multiplied together we should get an answer of 0.01135 moles of our HCI. Now we can find our “Concentration” Which means we would divide our moles (0.01125) to our vol in liters which is 0.025, once we do that, we get an answer of 0.045M of our NH3. Well, since we are on the topic of pH we know that we can use the formula: pH = -log (H3O+). Then what we would do is plug everything into the formula: pH equals -log (2.4 multiplied by 10 (with an exponent of -5). Once we find the answer to this and we add up all of our calculations, we can come to a conclusion that the answer is: 4.6197 as our pH.
The first step that I did to find the number of grams water can be produced when 11.7 moles of ethane that reacts with the excess oxygen gas was to balance the equation like this 2 C2H6 + 7 O2 ----> 4 CO2 + 6 H20. The second step that I did to find the number of grams water can be produced when 11.7 moles of ethane that reacts with the excess oxygen gas was to find the mole ratio which is 2 moles of C2H6 : 6 moles of H20. The third step that I did to find the number of grams water can be produced when 11.7 moles of ethane that reacts with the excess oxygen gas was to multiply this by the mole ratio like this 6 moles of water / 2 moles of ethane * 11.7 moles of ethane = 35.1 moles of water. The fourth step that I did to find the number of grams
In order to have a successful, reliable experiment you need sufficient data and evidence, reliable research, variables to test and a follow – up experiment. There are several types of variables you need to do an experiment. An independent variable is the manipulated experimental factor that is changed to see what the effects are. A dependent variable is the outcome. This factor can change in an experiment in reaction to the changes in the independent variable. An experimental group is the group of participants that are exposed to the change that the independent variable represents. The control group is participants who are treated in the same way as the experimental group except for the manipulated factor which is the independent variable (King 24). Proper data, evidence and research is also needed so the experiment turns out correctly and you know what you are testing. A follow – up experiment is not required, however it helps the validity of the conclusion of the experiment. Validity is “the soundness of the conclusions that a researcher draws from an experiment” (King 25). Conducting a follow – up experiment will help researchers and people alike see if the experiment worked properly, continues to help people and see how participants are doing after the experiment is over.
An endothermic reaction is a chemical reaction in which heat from the surrounding air is incorporated into the reaksie.5 The equation Between baking soda and vinegar are: CH3COOH + NaHCO3 -> CO2 (g) + NaC2H302 (aq) + H20 (1 ) .The reaction releases carbon dioxide release that heat energy required het.Die heat taken from the ambient air that the container in which the reaction occurs cold maak.Die carbon dioxide the pressure / gas provided in gas soda gebruik.6Die temparatuur fall because new bonds are formed and why he so heat energy to take as he needs energy to form the new bonds touch the liquid colder it is still an endothermic reaction. When vinegar with baking soda reacts an endothermic reaction formed. The other equation is: HC2H302-1- NaHCO3 = CO2 (g) + NaC2H3O2 (aq) + H20 (1) .1 Baking soda (NaHCO3) is also known as natruimbikarbonaat. It is
The purpose of the experiment is to identify and understand reactions under kinetic and thermodynamic control. A reaction under kinetic and thermodynamic control can form two different types of products. A reaction under kinetic control is known to be irreversible and the product is formed quickly. A reaction under thermodynamic control is known to require rigorous conditions. It is also reversible. The final product is more stable than the product made by kinetic control. The chart below shows the two types of reaction coordinates:
The Scientific Method is the standardized procedure that scientists are supposed to follow when conducting experiments, in order to try to construct a reliable, consistent, and non-arbitrary representation of our surroundings. To follow the Scientific Method is to stick very tightly to a order of experimentation. First, the scientist must observe the phenomenon of interest. Next, the scientist must propose a hypothesis, or idea in which the experiments will be based around. Then, through repeated experimentation, the hypothesis can either be proven false or become a theory. If the hypothesis is proven to be false, the scientist must reformulate his or her ideas and come up with another hypothesis, and the experimentation begins again. This process is to be repeated until a theory is produced. The production of a theory is usually called the conclusion. After considerable testing of the theory, it may become what is known as a law, but laws are only formed in very rare occasions where the theory can be proven without a doubt, which is usually done through induction.
State the Problem- We want to find out which material would insulate the cup the most.
After the water, has been boiling for 10 minutes, and the temperature inside the test tube has been stable for 5 minutes, record the temperature and remove the thermometer.
that the rate of reaction must be fast enough to make as much of the
For this research requirement I chose three different experiments to examine thoroughly. The first of these experiments came from the Journal of Experimental Child Psychology. The study done in this journal was an examination of orthographic learning and self-teaching in a bilingual and biliterate context. The aim of the study was to figure out the advantages and/or disadvantages of a student learning a native language when they are either monolingual, bilingual, or biliterate, and the study was focused on learning English because this is the most commonly learned non-native language in the world.
Students make the same projects year in and year out because they do not have easy