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- Alligation Medial and Alligation Alternate. Show your complete solution. 1. How many mL of 70% ethyl alcohol and 30% ethyl alcohol should be mixed to prepare 100mL of 60% ethyl alcohol? Volume of 70% ethyl alcohol = ? Volume of 30% ethyl alcohol = ?Complete the table and discussion. Table 1.1 Preliminary observations of the dissolution process. Reagents/Actions Taken Observations Sugar crystals Sugar crystals + 200 mL water Mixture after swirling Discussion:The amount of caffeine was influenced by the temperature of water used to brew, and the time of brewing. The concentration of caffeine is dependent on the volume of water used for brewing. Both statements are correct. 1st statement is True. 2nd statement is False. 1st statement is False. 2nd statement is True. Both statements are False.
- Temperature Effect on Solubility (hands-on experiment to do at home) Procedure: Fill two containers about half full of cold tap water. In the first container stir in enough table salt to saturate the solution, leaving some excess salt undissolved. In the second container stir in the same amount of table sugar. If excess does not remain, add more solid to each container. In the third container pour an equal amount of carbonated beverage. In this solution we will be observing the dissolved gas, carbon dioxide (CO2). Place all three open containers in a pot of water and gently heat until the water boils. Occasionally stir each container's contents. CAUTION: Steam contains much energy and can rapidly damage skin. Be careful not to spill hot water potentially causing skin damage. Note and record any change in the amount of solid undissolved in the first two containers. Observe any bubbles forced out of the solution during the heating of the beverage. Record your observations in the…Blank 1 is a condition that happens when the rates of dissolution and crystallization become equal. Blank 1 Add your answer2. Questions: 1. CHM-202 Lab 2 Freezing Point Depression Rev2 G6-2022 10/14 From your understanding of colligative properties, how would you design an experiment to measure the freezing point of a material which freezes at -2 °C using the same apparatus used in this laboratory and any chemical reagents commonly found in a chemical laboratory. Ice is the only material you have available to cool the solutions. If you measured the boiling point of the solution used in Trial 4, would you predict it would have a boiling point equal to, higher than, or lower than the boiling point of pure cyclohexane? Explain your answer.
- experiment A pair of 100 mL samples of water are taken from a well bored into a large underground salt (NaCl) deposit. Sample #1 is from the top of the well, and is initially at 32 °C. Sample #2 is from a depth of 50. m, and is initially at 42 °C. Both samples are allowed to come to room temperature (20. °C) and 1 atm pressure. An NaCl precipitate is seen to form in Sample #1. Two 250 mL samples of water are drawn from a deep well bored into a large underground salt (NaCl) deposit. Sample #1 is from the top of the well, and is initially at 42 °C. Sample #2 is from a depth of 150 m, and is initially at 8 °C. Both samples are allowed to come to room temperature (20 °C) and 1 atm pressure. An NaCl precipitate is seen to form in Sample #1. predicted observation (choose one) A bigger mass of NaCl precipitate will form in Sample #2. A smaller mass of NaCl precipitate will form in Sample #2. The same mass of NaCl precipitate will form in Sample #2. No precipitate will form in Sample #2. I…Part E Write balanced complete ionic equation for NaOH(aq)+ HC,H,O2 (aq)→H,O(1) + NaC, H,O2 (aq). Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣΦ x" O That's not quite right. Please check your formatting and try again No credit lost. Try again. Submit Previous Answers Request Answer Part F Write balanced net ionic equation for NAOH(aq) | HC,H,O, (aq) H,O(1) i NaC, H,O, (aq). Express your answer as a chemical equation. Identify all of the phases in your answer.What is another factor that can influence fractional distillation’s success other than the number of theoretical plates?
- Materials Needed solid I2 solid CUSO4-5H20 food dye solid (NH4)2SO4 heavy metals waste container halogenated waste container non-halogenated waste container semi-micro test tubes and rack regular test tubes and rack squash pipettes acetone cyclohexane propan-2-ol Method Part A: Solubility of ionic and molecular solids 1. Place a small amount (about the size of 1 grain of rice, see picture) of copper sulfate into each of three DRY semi-micro test tubes. Add 20 drops of water to the first test tube and gently flick the test tube with your finger to ensure mixing. 2. Repeat step 1 using acetone in place of water as the solvent in the second test tube. 3. Repeat step 2 replacing acetone with cyclohexane in the third test tube. Hold the test tubes against a white background to compare the solubility of copper sulfate in the three solvents and record your results. Discard these mixtures into the heavy metals waste container in the fume cupboard. Once these test tubes have been emptied you…12. Answer Only Refer to the following mixtures: Mixture A: Liquid and solid mixture Mixture B. Liquid mixture whose boiling points are similar. Mixture C. Liquid mixture with high boiling point. Mixture D. Heat sensitive liquid mixture. Which of the following distillation can be applied for Mixture D? vacuum distillation fractional distillation simple distillation none of these ———— This is defined as the temperature at which the vapor pressure of the liquid phase of a compound equals the external pressure acting on the surface of the liquid. solubility melting point boiling point flash point optical rotation —————— Predict the color change if 1% ferric chloride (yellowish solution) is added to a test tube containing a mixture of ethanol and pure acetyl salicylic acid. purple to yellow yellow to dark blue light blue to pink yellow to purple no color change50 mL of stock solution were taken and added to flask. Then 50 mL of Di water were added to the flask. This is solution 1. Then 50mL of solution 1 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 2. Then 50mL of solution 2 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 3. Then 50mL of solution 3 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 4. Find the concetrations of each solution. Information of stock solution - molar mass- 534.3g/mole 0.587g in MilliQ