Compute the vapor pressure of the solution

Assignment Help Chemistry
Reference no: EM13489648

2) (a) Calculate the molality of a 20.0 per cent by weight aqueous solution of NH4Cl. (Molecular weight: NH4Cl = 53.5) (b) If this NH4Cl solution is assumed to be ideal and is completely dissociated into ions, calculate the vapor pressure of this solution at 29.0 °C. (The vapor pressure of pure water at 29 °C is 30.0 mm Hg.) (c) Actually a solution of NH4Cl of this concentration is not ideal. Calculate the apparent degree of dissociation of the NH4Cl if the freezing point of this solution is -15.3 °C. (The molal freezing point depression constant for water is 1.86 °C per molal.)

Reference no: EM13489648

Questions Cloud

How many kilograms of water are needed per kilogram of iron : It is desired to cool iron parts from 500°F to 100°F by dropping them into water that is initially at 55°F. how many kilograms of water are needed per kilogram of iron
Evaluate the vapor pressure of the solution : If this NH4Cl solution is assumed to be ideal and is completely dissociated into ions, calculate the vapor pressure of this solution at 29.0 °C. (The vapor pressure of pure water at 29 °C is 30.0 mm Hg.)
Show how these two transactions should be recorded : Indicate whether the following revenues would most likely be classified as program revenues or general revenues on the government-wide statement of activities.
Derive an expression for the voltage across the resistor : A 250 - ? resistor is connected in series with a 4.80 - ?Fcapacitor. The voltage across the capacitor is vC=(7.60V)?sin[(120rad/s) t ]. Derive an expression for the voltage VR across the resistor
Compute the vapor pressure of the solution : Calculate the molality of a 20.0 per cent by weight aqueous solution of NH4Cl. (Molecular weight: NH4Cl = 53.5) (b) If this NH4Cl solution is assumed to be ideal and is completely dissociated into ions, calculate the vapor pressure of this solutio..
Derive an expression for the circuit current : A 150-? resistor is connected in series with a 0.250-H inductor. The voltage across the resistor is vR=(3.80V)cos[(720rad/s)t]. Derive an expression for the circuit current
Leadership skills and development : Identify the strengths and weaknesses they demonstrated as leaders during the movie. You may wish to give each person a character or two to write up and research;
The equilibrium concentrations at equilibrium determine ka : Do not forget to first determine the Ka, setup an "ICE" table, define the equilibrium concentrations of the finally and the significantly present at equilibrium.
Determine the focal length of the concave mirror : The observer on the right, sees two final images. One image comes directly from the objet. The other images comes from the reflection of the object in the mirror. What is the focal length of the concave mirror

Reviews

Write a Review

Chemistry Questions & Answers

  Explain what are the percetages of each compound

What are the percetages of each compound. Namphthalene = 17 cm^2 Phenol = 38cm^2 Toluene= 4 cm^2 E) Calculate the retention times for th following componnts from teh following information

  What is the percent abundance of each isotope

Boron has two stable isotopes with masses of 10.01294 u and 11.00931 u. The average molar mass of boron is 10.81 u. What is the percent abundance of each isotope?

  Explain what ph should be used and why

To extract quinine from an aqueous solution, what pH should be used and why? I'm not sure if you use both pKa's or just one.

  Calculate the final temperature

A 10.4-g sample of CaCl2 is dissolved in 107 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..

  Explain how many grams of antifreeze would be required

How many grams of antifreeze (C_2 H_4(OH)_2) would be required per 500 g of water to prevent the water from freezing at a temperature of -27 degrees celsius? answer in units of g.

  Explain synthesize 3-ethyl-2-phenyl-2-pentene

Which two reagents below would you choose to synthesize 3-ethyl-2-phenyl-2-pentene using the Wittig procedure? (triphenylphosphine, solvents, and a base are provided)

  Freezing point ofnbsp pure 2-methyl-2propanol is noted

freezing point ofnbsp pure 2-methyl-2propanol is noted 25.50c however it absorbs h2o as an impurity on exposure to

  Oxidation numbers of polyatomic ions

Many elements can have more than one charge or oxidation number. In this set of problems, we will assign oxidation numbers to each atom in sulfate, carbonate, bicarbonate, bisulfate, sulfite, nitrate, nitrite, chlorate, and perchlorate.

  Define what is the theoretical yield in grams

What is the theoretical yield in grams? What is the theoretical yield in moles? (I already have the calculated amounts of reactants) Just need theoretical yields.

  Define reactions as spontaneous or nonspontaneous as written

Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions.

  Determine the exact moles of the two compounds to achieve

a 1 l buffer solution with ph 9.05 is desired. one of the two ingredients of the buffer is hcn. what could the other compound be? Suggest a suitable ratio and determine the exact moles of the two compounds to achieve the desired pH.

  Compare the properties of elements and compounds give two

compare the properties of elements and compounds. give two examples of each including one example that exists in the

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd