Explain the normal boiling point of methanol

Assignment Help Chemistry
Reference no: EM13259263

A) The normal boiling point of methanol is 64.7 degrees C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 450.7 torr at 64.7 degrees C.

What is the mole fraction of methanol in this solution?

B) A solution is made by dissolving 34.8g urea (CH4N2O), a nonelectrolyte, in 275g water.
Calculate the vapore pressure of this solution at 25C and 45C

vapor pressure of water
25C 23.8 torr
45C 71.9 torr

Reference no: EM13259263

Questions Cloud

Determine an expression for the torque produced by couple : A pair of forces with equal magnitudes, opposite directions, and different lines of action is called a "couple." When a couple acts on a rigid object, the couple produces a torque that does not depend on the location of the axis.
What is the numerical value : Both the numerical value and dimensions of the universal gas constant R in the ideal gas formula pV=nRT depend on whether the temperature T is in Kelvin or Rankine Absolute temperature units.
Accounting system before financial statements : Each involves an adjustment that must be made to the accounting system before financial statements can be prepared. Show the effects of each adjusting entry on the accounting system.
What is the frequency of a radio signal : A widely used "short-wave" radio broadcast band is referred to as the 25-m band. What is the frequency of a 25-m radio signal
Explain the normal boiling point of methanol : The normal boiling point of methanol is 64.7 degrees C. A solution containing a nonvolatile solute dissolved in methanol has a vapor pressure of 450.7 torr at 64.7 degrees C.
How much of histhird payment goes toward repaying principal : A guy buys a car for $21,000 and finances it with a fiveyear, 7% APR with monthly payments and compounding. How much of histhird payment goes toward repaying principal?
How many payments will he need tomake to pay off the loan : A guy borrows $7900 and wants to repay it $600 every sixmonths with the first payment in 6 months. If the loan terms are 6%APR with semiannual compounding, how many payments will he need tomake to pay off the loan?
Number of shares outstanding in the eps : A company has 60,000 shares of common stock issued and outstanding on January 1, 2014. On April 1, the company issues an additional 10,000 shares. On Oct 1 the company repurchases 20,000 shares as treasury stock. What will the company use as it's..
State the mass of salicylic acid is needed to produce tablet : What mass of salicylic acid is needed to produce one extra strenght tablet of aspirin if the reaction has 60% yield. Please show work and correct sig figs.

Reviews

Write a Review

Chemistry Questions & Answers

  Explain what is the relative spread of the two values

What is the relative spread (in ppt) of the two values? (Note: ppt is part per thousand. Keep one decimal place in your answer.)

  Calculate the total number of moles of cl- ions in solution

0.134 mole of KCl and 0.185 mole of CaCl2 were dissolved in water. calculate the total number of moles of Cl- ions in the solution.

  Find the number of moles of naoh

For the acid-base titration combination of NaOH with 1.5 mol HCl, find the number of moles of NaOH that would be the chemically equivalent amount of HCl. Answer in units of mol.

  Calculate the minimun volume of water needed to dissolve

benzoic acid in water is 6.8g per 100ml at 100 degrees c, and .34 per 100ml at 25 degrees c. calculate the minimun volume of water needed to dissolve 1.00g of benzoic acid.

  What difference in their structural properties renders

What difference in their structural properties renders the triethylene glycol the only one that will work?

  State total pressure in the flask at the end of the reaction

Find the partial pressure of each produce and the total pressure in the flask at the end of the reaction.

  How many ml of 0.05 m hcl solution would be required

How many ml of 0.05 M HCl solution would be required to completely neutralize 25.0 ml of 1.0 M Ba(OH)2 solution?

  Determine delta h of solution smaller temperature change

experiment to determine delta H of solution, would you expect to get a larger, smaller or identical temperature change? why?

  Calculate the percentage of sulfate ion in the sample

A 1.5618-g sample containing sulfate ion was treated with barium chloride reagent, and 0.2321 g of barium sulfate was isolated. Calculate the percentage of sulfate ion in the sample.

  Dissolved sucrose incrases its boiling point temperature

You have 100 moles of solvent (not water). You have determined that 100g of dissolved sucrose incrases its boiling point temperature by 10C. For 100 moles of the pure solvent, how much mass (in grams) of salt

  What is the total quantity of heat required to melt pb

What is the total quantity of heat required to do this? The melting point of Pb is 327.4 degrees celsius; its heat of fusion is 4.774 kJ mol-1; its average heat capacity in the temperature range from 51 to 327.4 deg. celsius is 0.134 J g-1K-1.

  Explain standard mastering chemistry notation

What is the rate law for step 1 of this reaction? ((Express your answer in standard Mastering Chemistry notation.

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