Experimentally Finding Percent Mass of Carbon Dioxide in Sodium Bicarbonate Formal Lab Report By: Tessa Amster Lab Partners: Mia Cohoon, Ava Loebel, and Emma Murphy Lab Dates: 02/09/2023, 02/13/2023 Lab Report Due: 03/08/2023 Purpose The purpose of the lab was to determine the mass percent of carbon in sodium bicarbonate, also known as baking soda, by the means of measuring the mass of carbon dioxide gas produced in the chemical reaction. Expected Results The expected, or theoretical result was 52.39 percent composition of carbon dioxide in the equation. To find this value, the molar mass of carbon dioxide was calculated, being 44.01g, which was utilized in the formula to find percent composition, %CE = (gE/gT)×100, as the part, …show more content…
The Theory of Conservation of mass states that matter can neither be created nor destroyed. In this experiment, this was utilized with the presence of the chemical equation and reaction that took place which released carbon dioxide. This theory forced us to use the balanced equation, NaHCO3(s) + CH3COOH(aq) → CH3COONa(aq) + H2O(l) + CO2(g), as well as assume the equal masses of our reactants and products. A french chemist, Joseph Louis Proust, observed that elements combine with one another in a definite mass …show more content…
The expected results were found through the theoretical mass calculations, equalling 52.39%. The experimental mass was 30.%, meaning that the percent error was 42%. These are the results due to the law of consevation of mass, and law of definite proportions, as discussed previously. The law of conservation of mass was used in this experiment because the assumption was made that mass could not be lost in the reaction. The differing masses between the start and end of the reaction was due to the release of carbon dioxide, meaning that mass was not destroyed, but located beyond the confines the utilized beaker. The law of definite proportions was used in the ratios needed to determine the various calculations, specifically the percent composition of each element of acetic acid, and the calculations used in the findings of carbon dioxide. It implies that a precise quantity of each compound will be produced through the decomposistion of a compound. The experimental percent value was lower than the theoretical due to the circumstantial error. The required agitation of the solution is a potential cause of this mathematical error, meaning the solution should’ve been left sitting for longer before measurement. Potentially, the CO2 was still dissolved into the water, meaning the solution should have been swirled more to trigger the
Conclusion: Compare Trial 1 and Trial 2. The Trial 1 change in mass are 12.5g, however Trial 2 changes in mass is 1.2g. The Trial 1 change in mass is more than Trial 2. And I think the Low of Conservation of Mass violated in the Trial 1 is can be exist. Because the Trial 1 actually the soda with vinegar have Chemical reactions occur and chemical
Where as the other 50% of the groups did not support the Law of Conservation of Mass. The data that my group collected supported the Law of Conservation of Mass, as our substances stayed the same weight before and after in the closed experiment. Out of the 4 groups on my table 4 out of 4 or 100% of the groups supported The Law of Conservation of Mass. On the graph, you can tell that there was a chemical reaction that took place because there was an exothermic reaction. The temperature started rising right away, which is when the reaction started to take place.
Cassie Droelle 1510-01501 Chemical Equation 2 Visualizing Stoichiometry – Inquiry Lab Cassie Droelle 1510-01501 4-18-16 Introduction The purpose of this lab is to determine the complete balanced equation of a metathesis reaction with an unknown metal ion by first experimentally identifying the metal ion and then using stoichiometry to determine the rest of the equation. Stoichiometry is “the process by which quantities in a chemical reaction are compared” and is based on the Law of Conservation of Mass (1). The Law of Conservation of Matter “dictates that the mass of the reactants and mass of the products must be equal” (1).
We conducted our investigation this way because we wanted to easily find a way to prove that no mass can be created or destroyed in a reaction. The data we collected was the mass of the cup which
Mass of BaCl₂∙2H₂O for trial 1 (m_(BaCl^2∙2H^2 O))=( mol BaCl_2∙2H_2 O)|(244.3 g BaCl_2∙2H_2 O )/(1 mol BaCl_2∙2H_2 O) (m_(BaCl₂∙2H₂O))= 5.187×〖10〗^(-4) mol BaCl_2∙2H_2 O|(244.3 g BaCl_2∙2H_2 O )/(1 mol BaCl_2∙2H_2 O) (m_(BaCl₂∙2H₂O))=0.1267g BaCl₂∙2H₂O The percent composition of the limiting reactant (% comp) was calculated by dividing the mass of the limiting reactant (m_(BaCl₂∙2H₂O)) by the mass of the original sample (m_s) and multiplying the product by 100 Percent composition of BaCl₂∙2H₂O for trial 1 (% comp)= ((m_(BaCl₂∙2H₂O)) )/((m_s) ) ×100 (% comp)= ((0.1267g BaCl₂∙2H₂O ) ) /((1.0490g) )
In order to do this experiment we had to prepare by buying our supplies, and follow some safety steps. We had to use some safety gloves when handling soda ash because if we ate after handling it we could of gotten very sick. Also any supplies that came in any contact with the soda ash couldn’t be used for food after. Also we had to buy different types of fabric, cut them into 20 by 20 cm squares and label them. We had to buy some dye in order to find out how each fabric reacted to it.
Chemical compounds that are available to determine are CaCO3, CaCl2, Ca(NO3)2, mgCl2, MgSO4, KCl, HCl, HC2H3O2, KNO3, K2SO4, NaC2H3O2, Na2CO3, NaCl, Na2SO4, HNO3, H2SO4, HNO3, H2SO4, NH4Cl, (NH4)2SO4, K2CO3, 0.1 M AgNO3, 0.2 M BaCl, Mg(s), NaOH, and KOH. To start this experiment, start with the flame test by gathering a Bunsen burner and a Nichrome wire. Connect the Bunsen burner with a rubber tube to a laboratory gas. To prepare solutions for the flame test, weigh out 0.205 gram of Unknown Compound using an analytical balance and mixed it into a 140 mL beaker filled with 20 mL ionized water. Ensure that solid is completely dissolved using a stirring rod.
To determine the rate of reaction there are many method to be used for example, measuring the mass after the product has been added and measuring the difference in mass on the duration of a digital scale. Another method, which will be used in this experiment is using a gas syringe to measure the volume of the gas which has been produced. The cylinder inside, will be pushed out to show a quantitative presentation of the volume produced by the reaction. Hypothesis
The purpose of this lab was to measure the mass and volume of CO2 gas and calculate its density. To conduct this experiment, the group must have made sure that when moving the collecting bottle, the mouth of the bottle is covered by a group member’s hand. Also, the rubber tube must be taken out from the collecting bottle before taking out the stopper on the test tube. During this experiment, it was determined that it is important to keep the mouth of the collecting bottle covered with a group member’s hand while removing it from the water in order for nothing to come out and nothing to come in, keeping it a closed system. It was also determined that the volume of displaced water in the collecting bottle is the same as the volume of the gas because they both took
The Stoichiometry and math calculations are done based of off exactly 3.00g which means that if the student does not have exactly 3.00g then the results will be flawed. Another plausible source of error in the experiment can be that the precipitate was not fully dry when we took the mass
CLAIRE MUNTING 29/01/2018 Criterion C EFFECTS OF SURFACE AREA OF CALCIUM CARBONATE UPON RATE OF REACTION Calcium Carbonate Chips 1 Introduction: Within the current investigation, the effects of the surface area of Calcium Carbonate (CaCO3) in combination with Hydrochloric acid (HCl) upon its rate of reaction. CaCO3, commonly referred to as limestone, is an organic substance and is, in a sense, the crystallised “carbonic salt” of the element, calcium2. In addition to being a salt, the pH level of Calcium Carbonate is 9.91, and it is therefore, a basic substance, due to the fact that it is comprised of a pH level higher than 7, which is neutral3. HCl, however, is the bodily acid found in the stomach of human beings.
Cl_2 + 2NaOH→NaCl+NaOCl+H_2 O Initial mass (kg): 386.82 520.45 - -
For example. A method which will be used in this experiment will be to use a gas syringe to measure the volume of the gas which has been produced. The cylinder inside, will be pushed out to show a quantitative presentation of the volume produced by the reaction. Collision theory is a theory proposed by Max Trantz that explains how chemical reactions occur and why there are different rates for different reactions.
IV. Data and observations Mass of beaker (g) 174.01 Mass of beaker + NaOH pellets (g) 174.54 Mass of NaOH pellets 0.53 TRIAL 1 TRIAL 2 Mass of potassium acid phtalate (KHP) (g) 0.15 0.15 final buret reading (ml) 30.75
After being heated for 30 minutes it weighed only 2.4g. Our group’s goal was to find out the correct formula. So we used stoichiometry in order to find the theoretical yield for each equation. Then all we had to do was compare which theoretical yield would have the closest mass to the actual yield to find the correct formula. Our 2nd equation came closest to weighing the same amount of the actual yield. It weighed in at 2.5g while the actual was 2.4g.