CHEM

Procedure: To begin the experiment, carefully cut the tip of the phenolphthalein pipet and add exactly 2 drops of phenolphthalein solution to the unknown weak acid in the beaker. Then swirl the beaker to completely mix the unknown weak acid and phenolphthalein solution. Remove the cap of the Sodium Hydroxide and fill an empty pipet full of the solution. Add NaOH from the pipet into the beaker containing the 4 mL of unknown weak acid one drop at a time, swirling and observing the solution in th...

Exercise 1: Determining the Concentration of Acetic Acid Data Table 1. NaOH Titration Volume. Initial NaOH Volume (mL) Final NaOH Volume (mL) Total volume of NaOH used (mL) Trial 1 10 mL 3.6 mL 6.4 mL Trial 2 10 mL 3.2 mL 6.8 mL Trial 3 10 mL 3.0 mL 7.0 mL Average Volume of NaOH Used (mL) : 6.73 mL Data Table 2. Concentration of CH3COOH in Vinegar. Average volume of NaOH used (mL) Concentration CH3COOH in vinegar (mol/L) % CH3COOH in vinegar 6.73 mL 0.673 mol/L 4.0% ...

Procedure: I performed an EDTA/EBT titration on a local water supply and was able to measure the water hardness. I then calculated the concentration of Ca2+ ions that were present in the local water supply sample. Data Tables: EDTA Titration Volume Initial EDTA Volume (mL) Final EDTA Wolume (mL) Total volume of EDTA use (mL) Trial 1 10 mL 7.5mL 2.5mL Trial 2 11 mL 6.5mL 4.5mL Trial 3 13mL 10mL 3mL Average Volume of EDTA Used (mL): 3.33mL Water Hardness Average Volume of EDTA used ...

. T he manuf acturer of the vinegar used in the experiment stated that the vinegar contained 5.0% acet ic acid. What is the percent error between your result and the manuf acturer statement? Show your work. We use white vinegar in this experiment so that we can see the color change. In addition, balsamic vinegar contains a few different elements. 2. What challenges would you encounter with the t it rat ion if you had used apple cider vinegar or balsamic vinegar as the analyte instead of wh...

1. What might happen if a student used a pen to mark the baseline on the chromatography paper? The solution will m ove to the top and you would not be able to calculate the Rf value that is com pared to the distance that a com ponent traveled in the stationary phase reached by the solvent. 2. What would happen if the student did not stop the development before the solvent reached the top of the paper? The solvent would wash away the dye. 3. What would happen if the solvent level was abov...

e Question 3 3 / 3 pts True or False. The side chain of proline is bonded to the backbone nitrogen atom. Correct! True False Question 4 3 / 3 pts True or False: The name of the molecule that binds to an enzyme is called the apoenzyme. True Correct! False Question 5 3 / 3 pts True or False: An inhibitor that binds at the active site is an uncompetitive inhibitor. True Correct! False Question 6 3 / 3 pts Which amino acids differ by only one atom

Which equation represents a neutralization reaction? 1) NaOH + HCl → NaCl + H2O 2) 2Na + 2H2O → 2NaOH + H2 3) Zn + CuSO4 → ZnSO4 + Cu 4) AgNO3 + NaCl → AgCl + NaNO3 2. Which type of reaction will occur when equal volumes of 0.1 M HCl and 0.1 M NaOH are mixed? 1) neutralization 3) electrolysis 2) ionization 4) hydrolysis 3. Which compound reacts with an acid to form a salt and water? 1) CH3CI 2) CH3COOH 3) KCI 4) KOH 4. When K2CO3 is dissolved in water, the resulting solu...

Which equation represents a neutralization reaction? 1) NaOH + HCl → NaCl + H2O 2) 2Na + 2H2O → 2NaOH + H2 3) Zn + CuSO4 → ZnSO4 + Cu 4) AgNO3 + NaCl → AgCl + NaNO3 2. Which type of reaction will occur when equal volumes of 0.1 M HCl and 0.1 M NaOH are mixed? 1) neutralization 3) electrolysis 2) ionization 4) hydrolysis 3. Which compound reacts with an acid to form a salt and water? 1) CH3CI 2) CH3COOH 3) KCI 4) KOH 4. When K2CO3 is dissolved in water, the resulting solu...

Amino Acids Found in Proteins • Amino acids contain two functional groups, an amino group (-NH2) and a carboxyl group (-COOH) which are formed on a carboxylic acid. o Alpha amino acids are those where both functional groups are attached to the same carbon. o Side chain/R group and hydrogen atom are also attached to alpha carbon.  Side chain determines the properties of amino acids and its functions. Terminology • There are a variety of different types of amino acids, however the MCA...

Unit 14: Assignment 1 - Applications of Organic Chemistry REVISION QUESTIONS WHICH WILL HELP YOU LERAN MORE AND GET TO UNDERSTAND THE TOPIC WELL AS YOU PREPARE FOR YOUR FINAL EXAMS.