Explain the changes observed upon mixing the contents of the test tube the contents of the tubes containing HCl and NaOH,
Explain the changes observed upon mixing the contents of the test tube the contents of the...
A student carefully pipets 25.0 mL of 0.525 M NaOH into a test tube. She places the test tube into a small beaker to keep it from spilling and then pipets 75.0 mL of 0.355 M HC 5. into another test tube. When she reaches to put this test tube of acid into the beaker along with test tube of base she accidentally knocks the test tubes together hard enough to break them and their respective contents combine in the...
Suppose you filled one test tube with alanine and a second test tube with casein, but forgot to label the test tubes. What test could you run on the samples to confirm which test tube contained the alanine? Explain.
2. The stock solution at equilibrium used in test tube # 4 contains Fe3 (aq), SCN-(aq) and [FESCNP2 (aq). When NaOH was added to test tube #4 a shift in the equilibrium was observed. What chemical species in the stock solution reacted with NAOH? Write the balanced chemical reaction associated with the change observed from the addition of NaOH to test tube #4? Explain in terms of LeChatelier's Principle the observed results from the addition of 0.1 M KSCN to...
Le Chatelier's Principle 3. For Part Ill, use Le Châteller's Principle to explain the colour changes observed in test tubes 2 and 3 upon the addition of HC and A . Also, explain the observed colour changes in the test tubes placed in hot and cold water. (4 marks) Test Tube 2: Test Tube 3: Hot Water bath: Cold Water bath: Extension: 1. NaCl(aq) + HCl(aq) = NaCl(aq) + H2O + Cl2(g) When the above system is cooled, gas bubbles...
Part C. Benedict's Test. Test Tube Samp Prediction Observations Results (+ or -) 2-hydroxybutanal Benzaldehyde Propanone Cyclohexanone Unknown Part D. Iodoform Test. Test Sample Tube 1 2-hydroxybutanal Prediction Observations Results (+ or -) Benzaldehyde Propanone Cyclohexanone Unknown Experiment 12 Identification of Aldehydes and Ketones O the b e t theader of each holding your breath as a st beward your nose. Record the derson the specified memes from O Ta Test g shes between ones that contain a methyl group...
Part I Color changes of Methyl Violet. We will study the following reaction: HMV (aq) + MV (aq) + H* (aq) yellow greenish-blue violet Step 1. Place about 4 mL of distilled water in a regular test tube. Add two drops of methyl violet indicator. Record the color of the solution. Violet Next, add drop by drop, add 6M HCI. This forces equilibrium to be shifted to the left or right-circle the right answer). Adding HCl changes color from to...
Ir. contain howaining 5.0 m2 unlabeled to 5. You have two unlabeled test tubes, one containing 5.0 mL of 1.0 M HCl and the other containing 5.0 mL of 1.0 M of H2SO4. If you had only 6.0 mL of 1.0 M NaOH, describe how you could determine, without doubt, which test tube contained which acid? (You may use any equipment normally found in the lab.) withou. So pment
Organic Chemistry Lab question In the experiment we did acid-base extractions to find impurities. The impurity was either benzoic acid (acid) or 4-chloroaniline (base) So in this experiment we did Acid-Base extraction with an unknown compound. So we had an unknown of 0.150 grams and mixed it with 20 mL of diethyl ether. We placed this in a separatory funnel and added 2mL of 1.0 NaOH solution to the separatory funnel and placed the stopper over the top of the...
Two dialysis tube was filled with sodium polyacrylate and was left in a test tube filled with water for 2 hours. one had a fan being blown on it. 1. Was the water volume in the test tubes more or less after the two-hour period than it was at the beginning of the experiment? If there was a difference in either of the test tubes, what caused this change? There was less in both tubes. 2. Did this amount vary...
Data Table 1: Temperature Changes during Mixing of Different Volumes of 0.10 M HCl and 0.10 M NaOH Experiment Number HCI (mL) NaOH (mL) Room Temp (°C) Temp of mix (°C) 100 0 22 22 0 90 10 22 23 1 3 80 20 22 24 2 4 5 70 60 30 40 22 22 26.8 28 4.8 6 6 50 50 22 28 6 7 40 50 22 27 5 8 30 70 22 26 4 9 20 80...