What do you notice about the compounds under the melting point column that have negative values?

Q: What is the boiling point of a 2.6 m sucrose solution in ethanol? K(ethanol) = 1.22 °C/m and the…

A:

Q: f Cl, and SiBr, were both liquids a 4

A:

Q: 2. Find (i) the boiling point and (ii) the freezing point of a solution containing 0.52 g glucose…

A:

Q: 1. The process of freezing is shown below for two samples. The smaller circles represent a solute.…

A: option- C is correct as solute addition cause depression in freezing point.

Q: The boiling point of a 1.03% by mass magnesium chloride solution

A: If the total mass of magnesium chloride solution is 100 g, then it contains 1.03 g magnesium…

Q: Chemicals Benzophenone Sodium borohydride Benzhydrol Amount 0.523 g (.... mol) 0.12 g (.... mol)…

A: Number of moles of any substance is the ratio of mass of substance to molar mass of that substance.…

Q: Several emergent properties of water contribute to the suitability of the environment for life. How…

A: The correct statements are : 2) The partial positive region of water molecules are attracted to…

Q: What is the boiling point of an aqueous solution of ethylene glycol which is 1.70 molal? A. 0.880oC…

A: Given, Molality of the solution = 1.70 m Boiling point of an aqueous solution of ethylene glycol…

Q: Which dissolution process would be most exothermic?   a. KCl in H₂O b. CH₃CH₂OH in CH₃OH c. C₂H₆ in…

A: In this question, we will see the most exothermic process when solute dissolved in solvent. We know…

Q: What are the conditions for forming a homogeneous solid solution? Explain

A: Solution Thermodynamically, an answer could be a special description of a unvaried mixture that it's…

Q: The presence of soluble impurities in a given substance A lowers the melting point of A because the…

A: The given statement is False as The presence of soluble impurities in a given substance A lowers the…

Q: b. it must react chemically with the solute.

A: Crystallization  is the procedure of  forming solids. In crystallization atoms or molecules are…

Q: Please help me with this problem

A: All known compounds can be dissolve in certain solvents whereas they remain insoluble in other…

Q: ASSERTION: The random or zig-zag motion of the colloidal particles in the dispersion medium is…

A: The random or zig-zag motion of the colloidal particles in the dispersion medium is called as…

Q: What I Can Do ACTIVITY 4A: Identity the force that holds the given particles together. Answer on the…

A:

Q: Phase changes;  Show the water phase changes diagram and how it's difficult from the Carbon dioxide…

A: Phase diagrams shows the preffered physical states of matter at different thermodynamic variables…

Q: 1. An organic student did an experiment extracting benzoic acid from a mixture of other organic…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: True or false. Give a motivation for your answer. Cation concentration in the soil solution…

A: The cation also known as the positive ion is produced by the removal of electrons from the neutral…

Q: 2. 1,3-Propanediol (structure shown below) will dissolve in CaCl₂ (aq). Draw the strongest…

A: Answer:Attraction forces that acts between the difference species of the system to make it stable…

Q: Which effect do you observe, when 2 or more metal-containing minerals are placed together in water?…

A: A multiple choice question based on minerals, which is to be accomplished.

Q: 4. Explain the difference in boiling points seen in the figure to your right. H H-C-H H H H-C-C-C-H…

A:

Q: 3. Determine the molecular weight of the unknown from the following data collected from a freezing…

A: Freezing Point of p-xylene = 12.1oC = Tx Freezing Point of p-xylene + unknown = Ts = 9.6oC…

Q: Based on the given diagram The green broken line defines the pahse diagrma of solution Shows the…

A: The phase diagram of the solution indicates the freezing, boiling and sublimation curves for the…

Q: What are anionic vacancies?

A: The interruption of patterns in the solid crystal leads to the formation of defects. Stoichiometric…

Q: Boiling point is indirectly proportional to volatility. O A. True O B. False

A: Answer Boiling point is indirectly proportional to the Volatility

Q: If a small amount of impurity is present in a sample, what will be its effect on the melting point…

A: Types of impurities that can be present in the sample: Miscible impurity: Such impurity is soluble…

Q: please clarify the step 4 C. Using elevation in boiling point, thank you

A:

Q: 354 353 352 351 3 350 349 348- 347 2 346 345 344 1 343 342 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 mol…

A: Answer a)  Regions Phase description 1 Liquid phase 2 Coexisting phase 3 Vapour phase…

Q: (10) 6. A student was given a white solid for an unknown. Its melting point range was 78-81 °C. The…

A: The melting point of a substance is defined as the temperature at which the compound changes its…

Q: 1. The figure depicts the steps that contribute to the enthalpy change for the dissolution of NaCl.…

A:

Q: A 0.25 g sample of an unknown solid is dissolved in 8.85 g of cyclohexane. The change in the…

A: We can calculate the molality of the solute in the solution by using the relation of depression in…

Q: You are studying the boiling points of liquids with some fellow students. You have two liquids of…

A: The boiling point of the substance is a physical property that is related to the phase change of the…

Q: The triple point of a pure substance is at 0.173 atm and 175 K. The freezing point of the substance…

A: Firstly we will plot a graph with the help of given information, based on the graph we can eliminate…

Q: At 184 K the vapor pressures of compound A and compound B are 1274 and 224 torr, respectively. A…

A: The Vapour pressure P of a mixture is given by the formula : P = x1p°1 + x2p°2 x1 = mole fraction of…

Q: Suggest three ways to increase the rate at which zinc dissolves in sulfuric acid. Use large pieces…

A:

Q: What is the normal boiling point of this solvent?

A:

Q: These are cooling curves of (1) first compound and (2) second compound. Based on the graphs, what…

A: We have to find the freezing point from given cooling curve

Q: Benzene and toluene form an ideal solutions. At 900 C, the vapor pressure of pure benzene is 1.326…

A:

Q: Which substance, sucrose or CaCl, has more pronounced effect on the boiling point elevation and…

A: When a solute is added, then there is elevation in boiling point of solution and depression in…

Q: When performing recrystallization, you immediately placed the hot solution in an ice bath. What…

A:

Q: In the determination of melting points, oil bath are always preferred to water baths. why?

A: Oils like paraffin liquids are used in oil bath for melting point determination instead of heating…

Q: 1. Which of the following has dispersion forces as its only intermolecular force? а. СCl4 c. CH3CI…

A:

Q: 1. The vapor pressure of pure water at 115°C is 1085 torr. A solution of ethylene glycol and water…

A: When a solute is added to a pure solvent, the vapor pressure of the pure solvent gets reduced. This…