Melting point determination also find a melting point range

Assignment Help Chemistry
Reference no: EM13275765

In a synthesis experiment you obtain a sample of product on which you do a melting point determination and find a melting point range of 108.0 to 114.3 degrees Celsius. The sample is supposed to be benzoic acid. What preliminary conclusion(s) can you reach from this one determination

1) The sample is probably impure.

2) The sample is not benzoic acid

3) The melting point determination may need improvement -- it may not have been done properly, and make 4) sure it was repeated at least once.

5) The sample probably needs recrystallization.

6) The sample may be benzoic acid.

Reference no: EM13275765

Questions Cloud

Find the velocities of the proton and the oxygen nucleus : A proton that has a mass m and is moving at 390 m/s in the + direction undergoes a head-on elastic collision with a stationary oxygen nucleus of mass 16m
Explain what are the boiling point and freezing point : what are the boiling point and freezing point of a 1.47m solution of napthalene in benzene
In what direction do the electrons travel : If a current of 80.0 mA exists in a metal wire, In what direction do the electrons travel with respect to the current
Calculate the reactive power for the ideal transformer : A source connected to the primary winding supplies an impedance load connected to the secondary winding. The load absorbs 15 kVA at 0.8 p.f. lagging when the load voltage is 118 V. Assume that the transformer is ideal and calculate the following
Melting point determination also find a melting point range : In a synthesis experiment you obtain a sample of product on which you do a melting point determination and find a melting point range of 108.0 to 114.3 degrees Celsius.
Determine load current and impedance of three phase load : the power deliverd to a three phase Y-connected load is 3kw and the line-line voltage is 380v the load power factor is 0.85 lagging. determine the load current and impedance
Determine the ambulance speed : Standing at a crosswalk, you hear a frequency of 500 Hz from a siren of an approaching ambulance. Determine the ambulance's speed from these observations
What is the mass per unit length of the string : Tension is maintained in a string. The observed wave speed is v=22.0 m/s when the suspended mass is m=3.00 kg. What is the mass per unit length of the string
Determine the approximate transmission bandwidth : An FM signal has a carrier frequency of 200 kHz, a modulating frequency of 500 Hz, and a frequency deviation of ± 40 kHz. Determine the approximate transmission bandwidth (in kHz).

Reviews

Write a Review

Chemistry Questions & Answers

  Calculate the number of electrons in a flake of pure gold

Compute the number of electrons in a flake of pure gold valued at $0.32. Assume that the price of gold is $1219.0/troy oz.

  Determine the concentration of the original na2c2o4

Determine the concentration of the original Na 2 C 2 O 4 solution and disodium oxalate in the presence of excess acid.

  Explain observed in a mass-spectrum of a parent peak

The following isotopic cluster was observed in a mass-spectrum of a parent peak of a halogenated compound:

  Explain water evaporating it from the surfaces of canvas

For many years drinking water has been cooled in hot climates by evaporating it from the surfaces of canvas bags or porous clay pots. How many grams of water can be cooled from 39°C

  State produce the same amount of energy as the fission

Fission of one mole of U-235 releases 1.9 x 1010 kJ. Calculate the number of kg of coal needed to produce the same amount of energy as the fission of 1 kg of U-235 (235.05g/mol)

  What is the total number of grams of patassium chloride

what is the total number of grams of patassium chloride needed to saturate exactlye 300 grams of water at 10 degrees celcius?

  Explain the theoretical titration curve for the titration

Calculate the theoretical titration curve for the titration of 50.00 mL of 0.1000 M Na2CO3 with a 0.2000 M solution of HCl. Propose the indicators.

  Explain how many moles of are in the portion

How many moles of Mg(No3)2 are in this 0.1L portion? How many grams of Mg(NO3)2 was measured out to make this solution?

  Calculate the ph of a buffer

Calculate the pH of a buffer made with 0.50 M phosphoric acid and 0.75 M sodium dihydrogen phosphate. Ka = 7.5 x 10^-3

  Calculate the total gas pressure after on half-life

The decomposition of N2O to N2 and O2 is a first order reaction. At 730 degrees Celcius the half-life of the reaction is 3.58x10^3 min. If the initioal pressure of N2O is 2.10 atm at 730 degrees Celcius, calculate the total gas pressure after on h..

  State gas particles move in a zigzag pattern

Which of the following statements related to kinetic-molecular theory of gases is correct for an ideal gas? A. Gas particles move in a zigzag pattern until they collide with something.

  What precautions or what type of actions

What precautions or what type of actions should the EH&S or FS professionals take when faced with a situation involving polychlorinated biphenyls (PCB's.)?

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