2. Consider hydration enthalpy, lattice enthalpy, and enthalpy of solution. Can we predict trends in these parameters using charge density; that is, can we make predictions without looking up data? Which ones? Why? LP Table 3: Heat Predictions Can it be predicted by Term charge density? (Y/N) AHhydration AHlattice AHsolution Why or why not?

Q: Match the following aqueous solutions with the appropriate letter from the column on the right. 1.…

A: The depression in Freezing point can be given as follows: where ΔTf: Depression in freezing point…

Q: Calculate the molality of a solution formed by adding 9.80 g NH,Cl to 19.9 g of water. molality: m…

A: Given: Mass of ammonium chloride (NH4Cl)=9.80 g The molar mass of ammonium chloride (NH4Cl)=53.491…

Q: A solution was prepared by dissolving some acetarnide, CH2 CONH2 65.0 of pure water. The boiling…

A: Given: mass of solvent = 65.0 g = 0.0650 kg

Q: When NH4CI is added to water, the resulting solution feels cool to the touch. Which best describes…

A: Sign of ∆T and ∆H depends on the compound which is dissolved in water.

Q: The Kf and Kb values for water are 1.86 and 0.52°C/m, respectively. A solution boils at 107.5°C. At…

A: First calculate the molality of the solution using the boiling point of the solution. Use that…

Q: he lattice energy of NaBr is -752 kJ/mol. When 0.7322 g of NaBr is dissolved in water, 0.00427 kJ of…

A: lattice energy = -752 KJ/molmass of NaBr= 0.7322 gheat released = 0.00427 KJenthalpy of hydration =…

Q: 1- What is the molality (m) of a solution made by dissolving 32.1 grams of N a Cl (molar mass 58.44…

A:

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

A:

Q: Your sodium nitrate solution melted at -0.773 °C. Calculate an experimental value for the van't Hoff…

A: The given problem is related to the colligative properties. Colligative properties are those…

Q: When 236. mg of a certain molecular compound X are dissolved in 70.0 g of benzonitrile (C6H,CN), the…

A: The mass of compound X = 236 mg = 0.236 gThe mass of benzonitrile = 70.0 gThe freezing point of…

Q: What is the molalityof solution made by dissolve 25 g of NaCl in to 2.0 Liter of water. Assume the…

A: Given: Mass of NaCl=25 g Volume of water=2.0 L Density of water=1.0 g/mL

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A: Depression in freezing point is directly proportional to the molality (m) and Van't Hoff factor (i)…

Q: When KNO3 dissolves in water the system temperature is expected to: 1 a. Remain the same O b. Need…

A:

Q: How many grams of glucose (molar mass=180.16 g mol-¹) must be dissolved in 201 g of water to raise…

A: Elevation of boiling point is a colligative property. It doesn't depend on the nature of solute. It…

Q: A gas has a solubility of 0.23 g/L at 94.0 kPa in water at 200 K. a. What is the Henry's Law…

A: The equation for Henry's Law is as follows:  S = KP  where S = solubility of gas in liquid  K =…

Q: Do you expect AHsoln to be a large positive number, a large negative number, or close to zero?…

A: The enthalpy of solution is the amount of heat evolved or absorbed by the solution when the solute…

Q: Determine the mass (grams) of a nonvolatile, nonionizing compound that must be added to 1367.8 g of…

A:

Q: The Henry's Law constant for acetylene gas (C_{2}*H_{2}) in water at 20 deg * C is 0.0469…

A:

Q: What is the freezing point of the solution?

A: ∆Tf = iKfm   ∆Tf is the depression in freezing point   i is the Van't hoff factor  Kf is the molal…

Q: 2. Order the following compounds by rewriting them from left to right in order of decreasing heat of…

A:

Q: What minimum temperature is required to dissolve 24gof potassium nitrate in 40 g of water?

A: We will calculate the minimum temperature is required to dissolve 24gof potassium nitrate in 40 g of…

Q: B. Calculate the molality of a water solution if the freezing point is: 6. -9.3°C 7. -27.9°C

A: Molality of solution is defined as number of moles of solute dissolved per kg of solvent.

Q: 4.The water is "softened" through:       to.   Replacing minerals with sodium       b.…

A: Hardness of water is due to the presence of Dissolved Calcium and Magnesium salts in water

Q: (CH 12 HW Exercise 12.66 with feedback Rev One brand of laundry bleach is an aqueous solution…

A: The concentration of 4.00% sodium hypochlorite, NaClO, in bleach means that 4 mL of sodium…

Q: Henry's law may be expressed in different ways and with different concentration units, resulting in…

A: Given,the pressure of phosphine in water = 4.46 atmmass of the solution = 1.18 kgvolume of PH3 (g)…

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A:

Q: What is the formula of molality? a. moles solute / L of solution O b. moles of solute / kg of…

A:

Q: This is to be used for reference. Scientists ask: What mass of ethylene glycol (C2H6O2, molar mass =…

A:

Q: When 634. mg of a certain molecular compound X are dissolved in 60. g of cyclohexane (C,H,2), the…

A:

Q: What is the freezing point?

A: Given: Normal boiling point of solution=103°C Boiling point of H2O=100°C Kb=0.51°C/m Kf =1.86°C/m…

Q: heat absorbed or lost, in J,  by the water = 5.89 j 1.  a. The heat transferred from/to the NH4NO3…

A: a)  Entropy is defined as the measure of disorder or randomness of system entropy. It  is a…

Q: An aqueous solution of hydrofluoric acid is 12.5 molal with respect to HF and has a density of 1.070…

A: Given: 12.5 molal means 12.5 moles of solute (HF) present in 1 kg of solvent. Moles of solvent (H2O)…

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A: When a non-volatile solute is added to a pure solvent the freezing point of the solvent decreases.…

Q: The freezing points and boiling points of the solution which contains 22.1g Nacl in 129 ml. of water…

A:

Q: When 0.4129 grams of menthol (MW: 156.27 g/mol) is dissolved in a certain amount of cyclohexane, the…

A:

Q: What molality of Na Clis required to lower the freezing point of water to -11.6 degrees C? Use 1.853…

A: Given : freezing point of solution = -11.6 oC Since freezing point of solution = freezing point of…

Q: When 64.8 g of sucrose was dissolved in 100 g of water, the freezing temperature of the water was…

A: ΔTf= Kf. Molality ΔTf = Kf x m Molality m = number of moles/ W Kg solvent =(mass of substance/mol…

Q: 17.1gof CaCl,is dissolved in 750 mL of water (d= 1.00 g/mL) and is placed in the freezer at -2 °C…

A: Answer:- This question is answered by using the simple concept of calculation ofdepression in…

Q: solution 5.6 g of sodium acetate (NaCH3CO₂) dissolved in 300. mL of water 5.6 g of propylene glycol…

A: The depression in the freezing point () is given by the formula,  Rearrange the equation to i is…

Q: The freezing point of a CaCl₂ solution formed by dissolving 0.020 mol of CaCl₂ in 1,090 g of H₂O…

A: Given,The dissociation reaction:CaCl2  Ca2+ + 2 Cl-moles of CaCl2 = 0.020 molmass of water = 1090…

Q: The partial pressure of O, in your lungs varies from 25 mm Hg to 40. mm Hg. What concentration of O,…

A: The solubility and the pressure of a gas is related by Henry’s Law. According to Henry’s Law,    the…

Q: 3. Use the data to calculate the heats of hydration of lithium chloride and sodium chloride. Which…

A: The molar heat of Hydration is defined as Heat released during the dissolving of one mole of…

Q: References) What is the boiling point of a solution composed of 17.0 g of urea, (NH₂), CO, in 0.600…

A: Given data, Mass of urea = 17.0 g Mass of water = 0.600 kg Kb for water = 0.5121 °C/m Boiling point…

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A: The equation of freezing point depression is -                                              ∆Tf =…

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.