Explain the freezing point of pure benzene

Assignment Help Chemistry
Reference no: EM13256129

What is the molar mass of a nonpolar molecular compound if 5.52 grams dissolved in 36.0 grams of benzene begins to freeze at -1.87 °C? The freezing point of pure benzene is 5.50 °C and the freezing point depression constant, Kfp, is -5.12 °C/m.

Reference no: EM13256129

Questions Cloud

Find the distance between the two second-order minima : A screen is placed 1.20m behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.40cm wide-that is, find the distance between the two second-order minima
Explain what temperature is the vapor pressure equal : An organic substance has an enthalpy of vaporization of 29.0 kJ/mol. The compound has a vapor pressure of 524 mm Hg at 25 °C. At what temperature is the vapor pressure equal to 115 mm Hg?
What is the initial speed of the car : A car of mass 1203 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ensure that the collision is essentially elastic. what is the initial speed of the car
Explain the gas and the liquid have specific heats : The gas and the liquid have specific heats of 117.2 J/mol K and 72.3 J/mol K. How much heat is evolved when 20.0 g of CCl2F2 is cooled from +40 C to -40 C?
Explain the freezing point of pure benzene : What is the molar mass of a nonpolar molecular compound if 5.52 grams dissolved in 36.0 grams of benzene begins to freeze at -1.87 °C? The freezing point of pure benzene is 5.50 °C and the freezing point depression constant, Kfp, is -5.12 °C/m.
Finbd the change in potential energy of the rope : A uniform 3.15-kg rope 25.6 m long lies on the ground at the top of a vertical cliff. What was the change in potential energy of the rope during this maneuver
How to determine the heat of solution of kcl : The heat of formation of KCl(s) is -436.7 kJ/mol and the heat of formation of KCl(aq, 1 m) is -419.5 kJ/mol. Determine the heat of solution of KCl.
Explain the product gases from this rxn are then mixed : the product gases from this rxn are then mixed with the remaining two-thirds of the feed stream and sent to a reactor in which the following reaction goes to completion: 2H2S+SO2 goes to 2H2O+3S
Explain why most multicellular organisms use an iron : Explain why most multicellular organisms use an iron-containing protein for oxygen binding rather than free iron. Your answer should include an explanation of (a) the role of heme and (b) the role of the protein itself.

Reviews

Write a Review

Chemistry Questions & Answers

  Define sodium methoxide reaction

Sodium methoxide reaction: Pipet 1.65 mL of a 25% (by weight) solution of sodium methoxide in methanol into a 10 mL reaction flask.

  Compute the the order of the reaction

the half life increased from 2.0 min to 4.0 min at 25C. Calculate the the order of the reaction and the rate constant.

  Explain a feed stream containing a mixture

A feed stream containing a mixture of 40% n-butane, 30% n-pentane and 30% n-hexane flows into a flash unit. The flash temperature is 290 K and the flash pressure is 0.6 bar

  Define the graph is expected to be a straight line

At least how many standard solutions would you need to make calibration graph, assuming that the graph is expected to be a straight line? Explain your answer. Do not include the data from distilled water

  State ethanoic acid with a sulfiric acid catalyst

A student heated 1.0L of ethanol (density 0.789 g/L) with 1.0 mL ethanoic acid (density 1.049 g/mL) with a sulfiric acid catalyst and noticed a vinegar-like smell to the product as well as a fruity medicinal smell.

  What is the mass of the steel bar

125 mL of H_2O is initially at room temperature (22.0C). A chilled steel rod at 2.0C is placed in the water. If the final temperature of the system is 21.5C, what is the mass of the steel bar?

  Define why the addition of the hcl or naoh improves

Explain why the addition of the HCl or NaOH improves the ability of the azo dyes

  Define what is the molar mass of the solution

A solution of 2.00 g of para-dichlorobenzene (a clothes moth repellant) in 50.0 g of cyclohexane freezes at 1.05 C. What is the molar mass of

  What kind of results would you expect from a racemic product

Is there an analytical technique we could employ to verify that the camphor is also racemic? What type of instrument would you use? What kind of results would you expect from a racemic product?

  How much of the concentrated stock solution

nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.14% g/ml. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500 M HNO3.

  State sodium borohydride reduction

in a sodium borohydride reduction experiment explain any color changes observed when sodium borohydride was added.

  State the vapor pressure of the solution

what is the vapor pressure of the solution at 20 °C? Values at 20 degress celsius

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