Which portion of the AE vs T plot represents freezing? ΔΕ IV. III

Q: What partial pressure of hydrogen results in a molar concentration of 1.0 mmol dm-3 in water at 25…

A: The ideal gas equation is,

Q: Molybdenum is BCC and has an atomic radius of 0.14nm. Calculate a value for its lattice constant a…

A:

Q: b) Is barium hydroxide predicted to be more or less soluble that Ca(OH)2? Explain.

A: Barium  hydroxide is  predicted to be more soluble than calcium hydroxide.

Q: What is the normality of 0.25 M H2SO4?

A:

Q: What is the heat of dissolution? Write the expression that gives the change of molar heat of…

A: Solution :     Heat gained or lost by the system is calculated by the amount of heat transfer during…

Q: 2) Calculate the freezing point of A, in °C, from this data: AH; (KJ/mole) S (J/mole K) -25.3 10.8…

A: Given   ∆Hf (kJ/mole)  S (J/mole K) A (s) -25.3 10.8 A (l) +10.5 20.4 A (g) -13.8 43.8…

Q: Arrange the following sets of compounds based on the property given in increasing order. Type in the…

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Q: saline solution  (NaCl in water) used to deliver intravenous drug are 0.89% (w/v) what mass of NaCl…

A: Concentration %wv of solution = 0.89%It means the solution contains 0.89g of NaCl in 100ml of…

Q: Why does the water in swimming pool remain cold even until noon after cold night?

A: Water in swimming pools remains cool even during hot summer. This is because water has high…

Q: The normal freezing point of n-octane 1C8H182 is -57 °C. Is there any temperature at which liquid…

A: INTRODUCTION: The freezing point is defined as the temperature of a liquid at which a liquid becomes…

Q: A solution contains 5% w/v Al2(SO4)3.14H20 (MW = 600). Assuming there is complete ionization,…

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Q: 150.0 mL of 0.300 mol/L KOH is added to 150.0 mL of 0.300 mol/L HF. The resulting neutralization…

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Q: How much energy is required to vapourize 158 g of butane (C4H10) at its boiling point if its AvapH…

A: Given,  Mass of butane = 158 g  Molar mass of butane = 58.12 g ∆Hvap = 24.3 KJ/mol

Q: Any of the types of distillation we use to separate a medicinal substance dissolved in a mixture of…

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Q: Which of the statements below will be true for pure water at any temperature?    pOH = 7.00   pH =…

A: Water is neutral in nature . Water is not acidic not basic . We know , pH + pOH = 14 [H₃O⁺]= 10-PH…

Q: The enthalpy of solution for potassium perchlorate - KCIO4 is +51.04 kJ/mol. How many grams of…

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Q: Why are aquatic species more comfortable in cold water in comparison to warm water?

A: Solubility of the solution means maximum amount of solute that can be dissolved in given solvent.…

Q: 2) Calculate the freezing point of A, in °C, from this data: AH: (KJ/mole) S (J/mole K) A(s) -25.3…

A: Enthalpy of the reaction, (∆rH) is the difference between the enthalpy of formation (∆fH) of product…

Q: m Exa 16- Which one is wrong? a) Nonpolar solvents can dissolve polar substances more effectivelly.…

A: Like dissolve like. Polar solvent dissolve polar substance and non polar solvent dissolve non polar…

Q: Magnesium chloride is often used to melt ice on sidewalks. Considering that the solubility of…

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Q: At what temperature does a 2.00 m CH3OH(aq) solution freeze at?

A: Answer :- -3.72 (°C) 2.00 m CH3OH(aq) solution freeze at -3.72 °C…

Q: What is the definition for standard state conditions? O 298 K (25 °C) Exactly 1 M concentration for…

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Q: The solubility of ethanol, CH 3 CH 2 OH, in water is greater than the solubility of propane, CH 3 CH…

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Q: 3. The vapor pressure of methanol (1) at 298 K is 16.94 x 10³ Pa. Calculate A, G° (CH30H, g) –…

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Q: 2. Calculate the freezing point of a solution of 25 mL of CH,OH (d = 0.792 g/ml) in 325 mL of water…

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Q: Which has the greatest vapour pressure at 25°C? SiO2 CO2 H2O

A: At constant temperature, vapor pressure depends on the intermolecular forces. Vapor pressure will be…

Q: 5. What is the approximate molarity, molality and normality of a 13% w/w solution of H2SO4…

A: Given: percentage solution of sulfuric acid=13% Density of the solution=1.090g/ml The 13% solution…

Q: What is the freezing point of 2.47 m solution of Napthalene in Benzene? Kf= 5.12° C/ms The…

A: Solution is made up of two components which are solute and solvent. Solute is present in the minor…

Q: Which of the following has the lowest freezing point? O 0.150 m KCI 0.150 m NaCI 0.150 m NaOH 0.150…

A: We have to predict Solution having lowest freezing point.

Q: Calculate the w/v percentage of 4.39g of sucrose in 293 mL of water?

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Q: Which temperature would allow the highest solubility of CO2 in water? 40C 50C 60C 70C

A: A multiple choice question based on the solubility of gases, which is to be accomplished.

Q: 1. Calculate the molar heat of solution, AsolnH, for ycur salt. .

A: Given data: Mass of salt = 2.2 g Initial temperature T1 = 19.5o C Final temperature T2 = 29.5o C…

Q: What will happen to water if 1M of SALT is dissolve into it? I. the vapor pressure of water will…

A: Colligative properties: The colligative properties are those properties of solutions that depend on…

Q: How many (a) millimoles, (b) milliequivalents, and (c) milliosmoles of calcium  chloride (CaCl2 .…

A: How many (a) millimoles, (b) milliequivalents, and (c) milliosmoles of calcium  chloride…

Q: Discuss the basic thermodynamic concept behind freezing point depression.

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Q: What is the expected solubility of true salts to liquid ammonia?

A: Liquid ammonia is a solvent.

Q: student combines 0.19 g of Mg metal with HCl and gets a final V of 0.25 L which completely reacts…

A: The solution is as follows:

Q: Calculate the mean ionic molality for 0.25m LaCls. [Ans. 1.1914 m] S70 nsmes

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: How many mL of ethyl alcohol are required to make a 2.01% (v/v) aqueous solution in a 300. mL…

A: Volume percent (v/v) % :-  The volume of solute in mL present in 100 mL of solution is defined as…

Q: In the following reaction calculate 1 point and find the normality when it is 1.0 M H3PO4? Given…

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Q: Calculate the normality of 0.2M Na2CO3 (M.wt = 106).

A: Normality is a measure of concentration  equal to the gram equivalent weight divided by volume of…

Q: Given that the value of Kf for water is 1.86°C/m, what is the freezing point of an aqueous solution…

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Q: What are the mole fractions of hydrochloric acid (HCl) and water in 20% w/w) aqueous HCl solution?

A: Answer: Mole fraction of a compound in a solution is the ratio of its mole with total number of…

Q: what is the molar concentration of 200mL 10% (w/v) MgCl2 solution?

A: Given: Volume of solute = 200 mL Convert mL into L as follows. 1 mL = 0.001 L200 mL = 200 mL × 0.001…

Q: Give an example of Calcination?

A: The process of converting an ore into oxide by heating it strongly below its melting point in a…

Q: Indicate the principal type of solute-solvent interaction in each of the following solutions and…

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Q: SO₂Cl₂(g) → SO₂(g) + O₂(g) K = 0.520 @ 400 K: Q = 2.67 x 10-² Calculate the value of "X" from the…

A: Given the reaction quotient, Q = 2.67*10-2  Equilibrium constant, K = 0.520 at 400 K

Q: The normal freezing point of n-octane 1C8H182 is -57 °C. In what temperature range is it a…

A: The importance of Gibbs energy is that it gives information about the spontaneity of the reaction or…