What molality of Na Clis required to lower the freezing point of water to -11.6 degrees C? Use 1.853 degrees C/m for Kf of water.

Q: 2- A bottle of medicine contains 12.5% ethanol by volume. The density of ethanol (C2H3OH) is 0.789…

A: In order to calculate the concentration of the ethanol in terms of mass percent and molality we…

Q: K,= 2.57 °C kg mol for a certain subs 20 colution freezes at 5.7 °C. Calculate the freezing point of…

A: At freezing point of liquid there exists equilibrium between solid particles and solvent phase.…

Q: An aqueous solution has a freezing point of -13.8 ∘C, what is the boiling point of the solution? The…

A: ∆Tf = Kf x m ∆Tb = Kb x m

Q: 20. Which of the following solutions would give the lowest freezing point in water? O a. 0.020 m…

A: Freezing point of solution is defined as the point at which solution freezes.

Q: What mass of NaNO3 should be dissolved in 45 mL of water so that the resulting solution freezes to…

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Q: What molality of N a Clis required to lower the freezing point of water to -19.7 degrees C? Use…

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Q: A certain liquid X has a normal freezing point of -7.10 °C and a freezing point depression constant…

A: The normal freezing point of liquid X, Tof =-7.10 °C  The freezing point depression constant, Kf=…

Q: Predict differences in our global environment that may havearisen if the freezing point and boiling…

A: Differences in our global environment that may have arisen if the freezing point and boiling point…

Q: Calculate the boiling point of a solution containing 18.7 g of potassium phosphate in 150.0 g of…

A: Given Values mass of potassium phosphate = 18.7g Molar mass = 212.27g/mol Moles = 18.7g/212.27g/mol=…

Q: solution whose freezing point is -0.930°C is the boiling point of a solution made by g 31 g of NaCl…

A: The number of moles of a substance is determined as the mass of that substance upon its molar mass.…

Q: What is the molality of a solution containing 70.0 g of HNO3 in 0.400 kg of water?

A: Molality is defined as the number of moles of solute in a solution dissolved per1 kg or 1000 g of…

Q: 8. A solution containing 1.00 g of an unknown nonelectrolyte liquid and 9.00 g water has a freezing…

A: Tf° = -3.33°C ∆Tf = 0-(-3.33) = 3.33 °C Kf = 1.86°C/m  Mass of water = 9.0 gm  Mass of electrolyte =…

Q: How much water should you add to 223 g of Sodium Chloride to prepare a solution with  a molality of…

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Q: 10. What volume of 12 M HCI is required to prepare 6.00 L of a 0.300 M solution? 11. What is the…

A: Formula used :- 10. M1V1 = M2V2 11. Molality = number of moles of solute/mass of solvent (in Kg)

Q: How many grams of N a 2 C O 3 must be dissolved into155 g of water to create a solution with a…

A: Here we have to apply the molality formula

Q: What mass of NaCl is dissolved in 100.g of water in a 0.050 molal solution?

A: Molality of given NaCl solution is 0.050 molal. It implies that 0.050 moles of NaCl is present in…

Q: What molality of N a Cl is required to lower the freezing point of water to -14.6 degrees C? Use…

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Q: 47 g of NH3 are dissolved in 50 g of water at 20 deg C. Is the solution unsaturated or saturated or…

A: In this question, we want to determine Ammonia NH3 Solution is saturated or unsaturated or…

Q: Essentially the question is what makes a freezing point greater.

A: Properties of a solution which depends upon the no of solute particles present in it is called…

Q: An aqueous solution of glucose (MM = 180.2 g/mol) has a molality of 14.81 m and a density of 1.20…

A: The given value of molality of Glucose = 14.81 mThe given value of density of glucose solution =…

Q: Calculate the freezing point and boiling point of a solution con- taining 10.0 g of naphthalene…

A: Given information: Mass of naphthalene = 10.0 g Volume of benzene = 100.0 mL Density of benzene =…

Q: How much table salt should be added to 300 g water to lower its freezing point to -2.00°C?

A: Given values here: Freezing point of solution = - 2o C Mass of solvent = 300 g

Q: A solution is made by dissolving 56.0 g CaCl, in 150.0 g of water. What is the molality (m) of this…

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Q: 12 g of KCl is dissolved in 300g of water. What is the molality of KCl? (MW of KCl: 74.5 g/mol)

A: Given:  Mass of KCl = 12 gm  Mol. Wt. of KCl = 74.5 gm/mole  Moles of KCl = 12/74.5 = 0.1611 moles…

Q: What mass in grams of CH₃OH (MM = 32.04 g/mol) would need to be added to 380.1 g of water in order…

A: The required mass of CH₃OH to lower the freezing point of water by 12.0 °C is determined as shown in…

Q: A certain liquid x has a normal freezing point of -9.80 °C and a freezing point depression constant…

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Q: If each of these substances costs the same amount per kilogram, which substance would be the most…

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Q: 48- A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water, the density of resulting…

A: Molality is defined as numbers of moles of solute divided by mass of solvent in kg .

Q: Nicotinamide is a water-soluble nonelectrolyte vitamin important in metabolism. Addition of 3.88 g…

A:

Q: What molality of N a Cl is required to lower the freezing point of water to -12.4 degrees C? Use…

A: Given: Freezing point of water with NaCl solution = -12.4 oC And Kf of water = 1.853 oC/m.

Q: What is the molality of 120 g of NaOH in 1000g of water?

A: Number of moles of NaOH is determined as follows,

Q: What is the molality of NaCl in a solution that is 2.5 M NaCl, with a density of 1.02 g/mL? formual…

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Q: What mass of glucose should dissolve in11.5kg of water to obtain a solution with a freezing point of…

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Q: 2.25 g of glucose is dissolved in 240 grams of water. What is the molality of this solution? (Molar…

A: The question is based on the concept of solutions. Molality is one of the way of expressing…

Q: A certain liquid X has a normal freezing point of -6.90 °C and a freezing point depression constant…

A: We have to predict the freezing point of solution.

Q: What is the freezing point of an aqueous solution that boilsat 105.0 °C?

A: As the solution is aqueous so get the value of Kb and Kf with respect to water as, Boiling point…

Q: An aqueous solution of glucose (MM = 180.2 g/mol) has a molality of 3.83 m and a density of 1.20…

A:

Q: How many grams of ethylene glycol (C2H6O2) (molar weight 62 g/mol) must be added to 1 kg of water to…

A:

Q: How many grams of ethylene glycol must be added to 37.8 g of water to give a freezing point of…

A: The depression in freezing point is the colligative property. The formula used for the depression in…

Q: 2.25 g of glucose is dissolved in 240 grams of water. What is the molality of this solution? (Molar…

A: Molality is given by moles of solute dissolved per kg of solvent.

Q: Question attached

A: Given: The mass of glucose is 80 g. The mass of the solvent is 2Kg. We know that the molecular…

Q: If 11.2 g of sugar (MM= 342 g/mol) is dissolved in 500 g water at 30 degrees celsiui, a.) what is…

A: Given: Mass of sugar= 11.2g Molar mass of the sugar= 342 g/mol Mass of water= 500g Temperature =…

Q: What molality of N a Cl is required to lower the freezing point of water to -10.0 degrees C? Use…

A: The freezing point depression is observed after the addition of solute particles into a solvent,…

Q: b. When 4.35 grams of ethylene glycol (C,H,O2) is dissolved in 100g of water, the resulting solution…

A: Given,  Mass of ethylene glycol (solute) = 4.35 g  Mass of water ( solvent )             = 100 g =…

Q: If a solution of 22.0 g of octane (C8H18) in 148 g of benzene (CSH6) freezes at -1.16°C, what is the…

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Q: Calculate the molality of 23.0 g of glucose in 2.40 kg of water.

A: Q. Calculate the molality of 23.0 g of glucose in 2.40 kg of water.  Given: mass of solute (glucose)…

Q: Q3 /B- calculate the molality m of 1000 g of a solution contain 100 g of solute(NaCl) and 900g of…

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.