Mole Reaction Lab Report

If the amount of baking soda used in this experiment increases (0.2 g, 0.4 g, 0.6 g, 0.8 g, or 1 g), then the volume (mL) of the carbon dioxide released from the decomposition will also increase. In any chemical reaction, the atoms of the reactants are rearranged to form the product. Thus, as particles cannot be created or destroyed, the mass of the carbon dioxide released cannot increase or decrease unless the mass of the baking soda is changed.

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?

For the Mole lab, my team claimed there was 1,992 beans in the large display jar. The estimate was close but still off by 59 beans. The actual amount of beans in the jar was 2,051. To figure out our estimate we used a beaker of beans to experiment with. We first found the tare weight of the beaker, which was 49.912, and the weight of the beaker with the beans, 95.301. Our next step was the weight ten beans of different sizes and find the average of the beans. We found the average weight of the beans to be .47g. After doing this we then subtracted the weight of beaker with the beans from the tare weight to find the weight of the beans. We found the weight of the beans to be 45.389g. After finding the weight of the beans we dived that by he average weight of our ten beans and got 97 beans in our beaker. When we counted our beans in our beaker, we found it to be 105. We then repeated this test but using the tare

The purpose of this experiment was to mix Alka-Seltzer with Hydrochloric acid in order to analyze Sodium Bicarbonate as an active ingredient in the Alka-Seltzer. The mixture will contain hydrochloric acid to only see the composition of Sodium Bicarbonate in the tablet once it reacts. The amount that reacted allowed us to determine how much of it is present in the tablet. The amount of sodium bicarbonate will be measure by using the ideal gas law PV=nRT. The experiment will be conducted in the lab, therefore we are going to use room temperature which ranges from 15 to 26 degrees celsius. At room temperature pressure ranges from 12.8 to 25.0 millimeters mercury according to its corresponding room temperature.In the ideal gas equation R is 0.08206latm/mol k which is a constant. Once we have those values we can calculates the number of moles that reacted in the mixture by solving for the missing value. With the number of moles we are able to find the mass in grams which is what will potentially tell us the composition of Sodium Bicarbonate in a tablet of Alka-Seltzer.

During this lab I learned how to convert the mass of a compound to the number of moles and then to the number of molecules, I also learned how to determine the concentration of a

Both experiments were able to determine the yield of hydrogen gas by testing the effect of limiting reactants, balanced equations, stoichiometry, mole ratios and molar masses. Balanced equations are equations that have a balanced number of moles of each element on both sides of the equation. Molar mass is the sum of the atomic masses of all elements combined in a chemical substance. Mole rations can be determined using the coefficients of the reactants and products in the balanced equation. Mole ratios can be used to relate moles of product formed from a certain number of moles of a reactant. Stoichiometry is the method of using the relationship between two or more substances in a chemical reaction. The limiting reactant of a chemical reaction is the reactant that is used up first in the reaction and limits how much of the product can be formed. In experiment 2-1, a company wanted to know if magnesium or aluminum would be practical to use as an alternative to zinc to produce a given volume of hydrogen gas. In experiment 2-2, the company wants to know how to optimize the production of hydrogen gas and whether hydrochloric or sulfuric acids are reasonable alternatives for gas production. The The reactions performed in experiment 2-1

The relationship between mass of the product and mass of the reactant taken directly from the balanced chemical equation and molar masses of the involved species is used in this experiment to find the mass of the unknown sample. In this experiment the unknown sample is found out ,which will be on of the following salts:NaHCO3,Na2CO3,KHCO3K2CO3.Only the fixed mass of reactant react together to produce fixed mass of products.

9.Repeat the procedure with a new mass of baking soda. Before beginning, rinse the reaction vessel with water. Refill the graduated cylinder with water. Check water level in collection box so it has room for the water from the graduated cylinder.

Our observations of the lab are important because they tell us what we saw and what will happen when the three mixtures reacted together. Observation can be done qualitatively and quantitatively, keeping records of the information more detailed and resourceful. If we didn’t write down

The purpose of this lab was to experimentally and scientifically ascertain the percentage of oxygen in Chem B at Woonsocket High School. It was hypothesized that if the percentage of oxygen is measured experimentally in Chem B at Woonsocket High School, then it would be higher than the percentage of oxygen in dry air, which is 20.95%, because the air is not dry due to moisture in the air from people breathing and the altitude of where the experiment takes place may affect it as well.

There were many possibly sources of error in the lab that could have been due to incorrect measurement from systemic or random error. Throughout the entirety of the lab, there were many steps that presented possible sources of error such as adding too much or too little of a compound to the copper solution, or the loss of copper during transport or by being left on the stirring rod. Another situation which was a source of error was during step 5 when the copper solution and water was heated so that the contents of the beaker would boil. The error in this step was caused by the variable heating of the solution to prevent bubbling of the solution. The length of heating was another source of error because the mixture may have needed to be heated less or more than the 5 minutes stated in the direction to get to complete the step. During step 5, stirring of the mixture was required, so another source of error was that copper from the beaker may have been left on the stirring rod. During the next step, error may have occurred if there was copper precipitate left on the side of the beaker instead of washed with

When the two chemicals mix, the reaction between the two produce a gas known as Carbon Dioxide. Therefore, if this reaction occurred in a sealed container, then the container has a high potential of exploding and breaking or of the rubber stopper bursting out of the container which could injure the person(s) conducting the experiment. As we know, the particles of a gas have a weak force of attraction and are often spread out. Since the chemical reaction between vinegar and baking soda is an endothermic reaction involving the production of products such as carbon dioxide, it absorbs heat from its surrounding in order for the reaction to occur. Therefore, when the gas particles are heated by the heat that was produced, they tend to rise.

The purpose of this experiment was to see how the amount of baking soda dissolved in vinegar would affect the pH of the vinegar. We conducted the experiment by testing different amounts of baking soda in constant amounts of vinegar, and dropping the solutions on pH paper. By comparing the colors on the pH paper to a list of colors in relation to numbers on the pH scale, we were able to find out that as more baking soda is added, the pH of the solution goes up as well.

The law of conservation of mass states that atoms cannot be created nor destroyed during a chemical reaction. The mass of the reactants of an atom rearranges to form an equal mass of the products. An example of the law of conservation of mass in an everyday life is the combustion of a piece of paper burning. In the process of the paper burning, the paper forms into ash, water, and carbon dioxide. The mass of the paper does not destroy; instead, it transforms into another form. Assuming that the total mass of the compounds from the burning paper(products) is weighed, it still equals the mass of the paper(reactants). The purpose of this lab is to determine if the mass of the reactants will equal the mass of the products when the Acetic acid and