ipl-logo

Naoh Solution Lab Report

761 Words4 Pages

For Experiment 9, the NaOH solution was standardized with the primary standard acid KHC8H4O4 in order to determine the molar concentration of the NaOH solution. As seen in Table 1, the known mass of KHC8H4O4 was 0.2037 g. The moles of KHC8H4O4, could then be calculated to get 9.97E-04 mol. Based on the balanced equation between the sodium hydroxide solution and primary standard acid, the mole ratio of 1:1 and the molar mass of NaOH was applied to calculate the molar concentration of NaOH, which was 5.42E-02 mol/L (Table 2). Since there was only one trial conducted for this part, the average molar concentration, standard deviation, and relative standard deviation calculations were not applicable. The molar concentration of the standardized …show more content…

The calculated average percent by mass of acetic acid in this experiment was 1.72%. This indicates that there was an error during the experiment, regarding the lower than expected amount of acetic acid in the vinegar sample. A possible error may be the addition of too much NaOH during Experiment 10. This would have caused inaccurate data, since the calculations would account for a higher amount of sodium hydroxide solution added. This can be a source of human error, in which it may be difficult to obtain the same color of pink for the different trails. Also, it was fairly easy to go over the endpoint with the addition of a few extra drops of the NaOH solution, causing a dark pink color. A possible improvement to the lab would be to include more trials during Experiment 9 and 10. Performing multiple trials allows for more consistent and precise results. In reference to Experiment 9, only one trial was conducted, which increases the likelihood of an error within the results. An error in the data from Experiment 9 would cause the calculated molar concentration to be off, thus affecting the calculations for Experiment 10. Another error would be the lack of waiting 10-15 seconds before reading the buret. This step is important since it the solution may have an overall light pink color upon the addition of a few drops of NaOH, in which some may automatically assume that the endpoint has been

Show More
Related

Unknown Solid Acid

1800 Words | 8 Pages

The KHP and the acid samples must be dried, because there would still be extra water which would skew the molarity. The calculated molarity of the NaOH would be lower because there would be extra volume in the solution, but still the same amount of moles of NaOH, so the molarity would be less, and thus, will require more titrant in order to

Read More

6.03 Pre Lab

993 Words | 4 Pages

Question 4: List the 3 errors; • Adding too many drops of NaOH at the same time would affect the results because we can’t determine the exact equivalent point when the color changed. The results won’t be accurate and that will affect all the data that are dependent on the amount of NaOH to titrate. • Other error could be the hardness to notice a color change; we always use a white paper under the flask to determine when the color changes right away. And if we don’t use the white paper it will be hard to determine the color change and the amount of NaOH that was used to titrate it. • Also other source of error could be by not rising the burette with NaOH before we fill up with it, or it maybe they were rinsing it with a lot of NaOH which could affect the data recording for NaOH amount of titration.

Read More

Ph Levels Lab Hypothesis

421 Words | 2 Pages

The data from the first experiment concluded that pH level of 4 and pH level 7 had the most activity. Thanks to the chemistry lab the pH levels were created and data was collected. In both experiments, there were procedures that were done differently that could have had an effect on the data. The

Read More

Stoichiometry Lab

563 Words | 3 Pages

Firstly, because the NaHCO3 compound was not stored in a sealed container, therefore dust particles could have changed the results, and making the product impure. Also, there are uncertainties associated with the instruments used in this experiment. This, if the products were measured slightly more than should be, this could have affected the concentrations of the solutions, and therefore causing a larger

Read More

Dissolution Of Naoh In Water Lab Report

459 Words | 2 Pages

When the sodium hydroxide pellet was added, the test tube became warm and it took awhile to dissolve. The dissolution of NaOH in water resulted in a basic solution (When tested with the red litmus paper, the paper turned a blue color and when tested with the blue litmus paper, the paper remained a blue color). The net ionic equation for the dissolution of NaOH in water is displayed below: NaOH(s) → Na+(aq) + OH-(aq) The addition of magnesium hydroxide to water resulted in a cloudy slurry. There was no change in the color of the blue or the red litmus paper.

Read More

Paper Chromatography Lab Report

767 Words | 4 Pages

In this lab, human error could have possibly been that the salt wasn’t fully dissolved or even the Kool-Aid wasn’t fully dissolved. To fix this next time, both mixtures can be stirred a little longer. A third human error could have been when putting 20 drops into the test tubes, some drops were bigger than others causing there to be more than mL of mixture in the test tube. At the end of the lab, a red and yellow M&M were used to do a home material test. I dissolved the color off the shell with warm water and placed a dot of each color onto a strip of chromatograph and placed them in two individual

Read More

Chemical Reaction Lab Report Essay

739 Words | 3 Pages

The materials used during the experiment included Sodium Hydroxide, Copper Nitrate, a beaker, a pipette, a test tube, a graduated cylinder, a digital scale, gloves, and goggles. The scientist put the goggles and gloves on for safety and the scientist began the experiment. First, the scientist set the graduated cylinder on the digital scale. Then, the scientist pressed zero on the digital scale. While the graduated cylinder is still on the digital scale, the scientist measured ten milliliters of Sodium Hydroxide into the graduated cylinder.

Read More

Macromolecules Lab Report

2504 Words | 11 Pages

We should reconsider cleaning the test tubes before the lab even if it may seem clean because it may carry some left overs from a previous reaction, resulting in an insufficient outcome. Exprimental error can have a huge impact on the results on the lab weather its due to measurement error or cross sontamination so it allways key to be catious. Furthemore this experiement has helped us learn on how do we use our knowledge learned in class to predict and make hypothesis on what we might get on some of our reactions. It was also fun doing it and each one of us has actually learned something from it. This lab also proved our hypothesis correct and did change colors to their reactive colors when specific nutrients were present.

Read More

Dissolved Oxygen Lab Report

1229 Words | 5 Pages

Otherwise the experiment had been done improperly, therefore giving out abnormal results. The source of error lies in the fact that the experiment hadn’t been done several times to find its maximum accuracy. Another error made may be human error, such as mixing up the chemicals on accident or over dosing more than the experiment needed. There are other errors such as systematic errors that could have had an impact on this experiment. Refinement to make this experiment’s data more accurate could be done by cleansing all the equipment that is going to be used thoroughly and use a consistent quality of water.

Read More

Acid Base Neutralization Lab Report

1001 Words | 5 Pages

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

Read More

Titration Lab Report

1290 Words | 6 Pages

These calculations are outlined below. You may want to refer to your notes from lecture for additional examples.   Determination of moles of base delivered: After each titration, you will need to determine the number of moles of sodium hydroxide used. First, you will need to know the molarity of the solution (the solution has been previously standardized, meaning it has a very accurate molarity that has been experimentally determined). Write this down when you start the titration.

Read More

Determination Of Ethanoic Acid In Vinegar Lab Report

1489 Words | 6 Pages

Commercial vinegar, Yamaha brand 0.1 mol/dm3, NaOH soloution Phenolpthalein indicator soloution (50.00 ± 0.5 cm3 ) cm3 burrete (250.00 ± 0.5 cm3) volumetric flask a (250 cm3± 0.5 cm3)

Read More

Lab Report On Acid Base Titration

1346 Words | 6 Pages

Practical I: Acid-base equilibrium & pH of solutions Aims/Objectives: 1. To determine the pH range where the indicator changes colour. 2. To identify the suitable indicators for different titrations. 3.

Read More

Benzoic Acid Lab Report

767 Words | 4 Pages

That caused a new initial reading of NaOH on the burette (see Table1 & 2). The drops were caused because the burette was not tightened enough at the bottom to avoid it from being hard to release the basic solution for titrating the acid. The volume of the acid used for each titration was 25ml. The volume of the solution was then calculated by subtracting the initial volume from the final volume. We then calculated the average volume at each temperature.

Read More

Relative Atomic Mass Lab Report

380 Words | 2 Pages

Explain how the molarity of the standard solution (the alkali) was calculated in the experiment (equation explained)- 0.1M of NaOH is required, this equation will be used: Concentration = moles volume This will be rearranged to find the moles needed to carry out the experiment. The concentration of the experiment using NaOH is 0.1M so we just need to rearrange the equation to find the molarity. 0.1 x 0.250 = 0.0250 moles Number of moles =

Read More

More about Naoh Solution Lab Report

Open Document