Lab Report-2-Matter and Phase Changes Distil Ethanol

Heating a solid until it passes directly from the solid phase into the gaseous phase. Separating a liquid from an insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid. The process of vapor returning to the solid phase without a liquid phase in between. Heating a mixture to vaporize a volatile liquid component to make the remaining component dry. Separating a solid from a liquid using a porous material, such as paper, charcoal, or sand, as a filter. Using a solvent to selectively dissolve one or more components from a solid mixture. Answer Bank extraction filtration decantation deposition sublimation evaporation

A certain liquid X has a normal boiling point of 93.90 °℃ and a boiling point elevation constant K₁ = 1.14 °C-kg-mol¯¹. Calculate the boiling point of a solution made of 40.1g of zinc chloride (ZnCl₂) dissolved in 350. g of X. Round you answer to 4 significant digits. °C x10 X 1 Ś

5. Chemical Xis a solid with white color that forms large crystals. The solubility of chemical X in water at different temperatures is shown below. Solubility of X in H20 124 10- 8- 6- 2- 0+ Ó 10 20 30 40 50 60 70 80 90100 Temperature (°C) Irina wants to dissolve 30 grams of Xin 1 liter of water. She does so by stirring 30 grams of the large crystals into 1 liter of water at 45°C. How could Irina change her method to dissolve all the X faster? Solubility (g/100 g H,O) 4-

Why is fractional distillation more efficient than simple distillation when purifying liquid mixtures?

Balance

ed The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 12.63 grams of sodium sulfide, Na₂S (78.05 g/mol), in 163.3 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Water Ethanol Chloroform Benzene Formula H₂O CH3CH₂OH CHCI 3 соно Diethyl ether CH3CH₂CH₂CH3 The molality of the solution is The boiling point of the solution is Kb (°C/m) Kf (°C/m) 0.512 1.86 1.22 1.99 3.67 2.53 2.02 m. °C. 5.12

The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 14.52 grams of calcium acetate, Ca(CH3COO)2 (158.2 g/mol), in 156.5 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kh (°C/m) Kf (°C/m) Water H20 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCI3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is m. The boiling point of the solution is °C.

Only typed solution.

Part B The solvent for an organic reaction is prepared by mixing 70.0 mL of acetone (C3H6O) with 64.0 mL of ethyl acetate (C4H8O2). This mixture is stored at 25.0 °C. The vapor pressure and the densities for the two pure components at 25.0 °C are given in the following table. What is the vapor pressure of the stored mixture? Vapor pressure Density Compound (mmHg) (g/mL) 230.0 0.791 95.38 0.900 acetone ethyl acetate Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) Psoln: HÅ Units Value ?

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.

The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 14.27 grams of magnesium acetate, Mg(CH3COO)2 (142.4 g/mol), in 201.2 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kb (°C/m) Kf (°C/m) Water H₂O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is The boiling point of the solution is m. °C.

302 301 300 299 298 297 (K) 296 295 294 293 292 0.2 0.4 0.6 0.8 XA According to the phase diagram shown for mixtures of A and B shown above, if xA 0.2, solid A (enter A or B) will start to precipitate from a homogeneous solution when the temperature reaches A K (enter the temperature to zero decimal places).

Submit Previous Answers A solid mixture consists of 25.5 g of KNO (potassium nitrate) and 4.5 g of K2SO4 (potassium sulfate). The mixture is added to 130. g of water v Correct Use this solubility curve (Eigure 1) to answer the questions. Crystallization Crystallization is the opposite of dissolution. Since solids tend to dissolve better at higher temperatures, we can cause them to crystallize (i.e., undissolve) from a solution by lowering the temperature. Part B If the solution described in the introduction is cooled to 0 °C, what mass of KNO, should crystallize? Enter your answer numerically in grams. • View Available Hint(s) Figure < 1 of 1 29.65 KNO, / NH,CI Previous Answers Submit 50- Nac X Incorrect; Try Again; 6 attempts remaining 40 30 LiSO, Part C Complete previous part(s) 20 - K,SO, 10- Part D KCIO, 10 20 30 40 50 60 For which salt, K2SO,, LişSO,. KCIO,, or NH,C1, will increasing the temperature of the water have the greatest change in solubility per 100 g solvent?…

Part A H2 SO4 (aq) and LİOH(ag) Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣφ ? Submit Request Answer Part B HCl(aq) and Al(OH)3 (s) Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣφ ? Submit Request Answer Part C H2 SO3 (ag) and Mg(OH)2(s) Express your answer as a chemical equation. Identify all of the phases in your answer.

In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used separation techniques. Some of these techniques are:Distillation – this process is used to separate components that have significantly different boiling points. The solution is heated and the lower boiling point substance is vaporized first. The vapor can be collected and condensed and the component recovered as a pure liquid. If the temperature of the mixture is then raised, the next higher boiling component will come off and be collected. Eventually only non-volatile components will be left in the original solution.Centrifugation – a centrifuge will separate mixtures based on their mass. The mixture is placed in a centrifuge tube which is then spun at a high speed. Heavier components will settle at the bottom of the tube while lighter components will be at the top. This is the technique used to separate red blood cells from blood plasma.Sieving – this is…

SylvanPrep edx edX| Free Online... C Coursera| Online... = College Algebra B.. an... - Calcworkshop Resources O Hint Check Answer 45.9% Assignment Score: Question 32 of 41 A new linear temperature scale, degrees Zunzol (°Z), is based on the freezing point and boiling point of a newly discovered compound zunzol. The freezing point of zunzol, -141.5 °C, is defined as 0 °Z, and the boiling point of zunzol, -24.8 °C, is defined as 100 °Z. What is the freezing point of water in degrees Zunzol? | freezing point: What is the boiling point of water in degrees Zunzol? boiling point: 1037 10 A stv P. 2.

The 50:50 (by mass) mix of water and ethylene glycol (antifreeze) contains 16 moles of ethylene glycol per 1 kg of water. Given than K₁ for water is 0.5 °C/m, what is the boiling point of the mixture? 100.5°C 108 °C 92°C 100°C 99.5°C

Solvent Formula Diethyl ether Water Ethanol Chloroform CHCl3 Benzene C6H6 H₂O CH3 CH₂ OH Kb (°C/m) K(°C/m) 0.512 The molality of the solution is The freezing point of the solution is 1.22 3.67 2.53 CH3 CH₂ OCH₂ CH3 2.02 m. 1.86 1.99 5.12 °C.

Petroleum chemistry

A certain liquid X has a normal boiling point of 105.30 °C and a boiling point elevation constant K₁ = 1.74 °C-kg-mol¯¹. Calculate the boiling point of a solution made of 8.59g of ammonium chloride (NHCl) dissolved in 150. g of X. Round you answer to 5 significant digits. пос x10 X

Acrylonitrile and ethyl acetate have the same boiling point: 77.20C. Which statement explains the outcome you would expect if a mixture of these two substances were distilled? * The acrylonitrile would vaporize first and the ethyl acetate would be left behinc O The ethyl acetate would vaporize first and the acrylonitrile would be left behind Both substances would vaporize at the same time so distillation would not be h Ethyl acetate is a solid so distillation would involve allowing the acrylonitrile to evaporate. Which statement best explains why structural formulas are good for depicting polymers?

4. Why is fractional distillation more "efficient" than simple distillation? During boiling point determination the temperature of the vapors is be E