Calculate the molality of the solution

Assignment Help Chemistry
Reference no: EM13170609

A 2.00 g sample of a particular compound was dissolved in 15.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85ºC.

For pure CCl4, TB = 76.50ºC and KB = 5.03°C·kg/mol

Use the KB given in the problem information above and the boiling point elevation calculated in problem 1, calculate the molality of this solution (in mol solute/kg solvent).

Reference no: EM13170609

Questions Cloud

What is the half-life of the material? : "A sample of a particular radioisotope is placed near a Geiger counter, which is observed to register 160 counts per minute. Eight hours later the detector counts at a rate of 10 counts per minute. What is the half-life of the material?"
Compute the mass of the solvent : Calculate the mass of the solvent (CCl4) in kg. Use the molality calculated in question 2 and the solvent mass calculated in question 3 to determine the number of moles of solute present in this solution.
Compute the molarity of the hcl : This is equal to the number of moles of HCL present in the 5.00mL of HCL delivered to the flask. Compute the molarity of the HCL.
Discuss the issues related to corporate governance : Discuss the issues related to corporate governance and the practices performed by an independent board of directors who act in a manner consistent with shareholders' best interest.
Calculate the molality of the solution : calculate the molality of this solution (in mol solute/kg solvent).
Compute the boiling point elevation : A 2.00g sample of a particular compound was dissolved in 15.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85 Celcuis.
What is the mass in grams of the caco3 component : A sample of stoichiometric dolomite (an equimolar mixture of CaCO3 and MgCO3) has a mass of 10.00 g. What is the mass in grams of the CaCO3 component?
Why do companies go global : Conduct research which addresses the question, Why do companies go global and review the latest APEC Guide to Investment Regimes.
What is the specific heat of the metal : A 5.5 g sample of metal at 100.0 degrees celsius is placed in a calorimeter with 20.0 g of water at 15.0 degree celsius. If the temperature of the water rises to 21.0 degrees celsius, what is the specific heat of the metal?

Reviews

Write a Review

Chemistry Questions & Answers

  State what is the ph of pure water in equilibrium

What is the pH of pure water in equilibrium with 1 atmosphere of carbon dioxide at 25?C?

  Explain few drops of phenolphthalein indicator

In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 23.75 mL of 0.0502 M NaOH but overshoot the end point

  Calculate the concentrations of all species

At 25°C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) reverse reaction arrow 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases.

  What volume will the gas occupy if the pressure changes

A gas occupies a volume of 2.45 L at a pressure of 1.03 atm and a temperature of 293K. What volume will the gas occupy if the pressure changes to 0,980 atm and the temperature remains unchanged?

  How much heat is required

How much heat is required to warm 211 g of ice from -45.9°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?

  Calculate the expected ph of the buffer solutions

Given that the pKa for Acetic Acid is 4.77, calculate the expected pH of the buffer solutions using the Henderson-Hasselbalch equation and the concentrations of Acetic Acid and Acetate added to the 250 ml Erlenmeyer flask.

  How many photons are required to heat

Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to heat 200. mL of coffee from 25°C to 62°C?

  Define solubility in water in hexane

Solubility in water in hexane, when mixed water and ether(diethyl ehter), why two layers will form ? Which layer will be top layer why?

  State the most probable mechansim of reactvity

he most probable mechanism of reactivity for solvolysis of benzyl chloride is a) Sn1 b) Sn2 c) E1 d) E2. The most probable mechansim of reactvity for solvolysis of 2-chloro-norborane

  How fast is electron moving relative to the speed of light

The mass of an electron is 9.11 * 10^{-31} kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31*10^{-10}m, how fast is the electron moving relative to the speed of light?

  What is rate of change of the total pressure of the vessel

If the partial pressure of NO is decreasing at the rate of 32 torr/min, what is the rate of change of the total pressure of the vessel?

  What was the mass % of d2o in the original sample of water

A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacted completely with Cl2 to give a mixture of HCl and DCl. The HCl and DCl were then dissolved in pure H2O to make a 1.00 L solution

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