User Account

All Pages

Crystal lattice require less energy to break the lattice

Assignment Help Chemistry
Reference no: EM132015513

For a melting point determination, if the compound is less pure, then the melting point will generally be higher or lower and why?

Lower, impurities may react to form gasses which dissipate at room temperature

Lower, because defects in a crystal lattice require less energy to break the lattice

Higher, additional defects will be harder to melt

Higher, impurities may react to for liquids which do not dissipate at room temperature

Acid-base extractions remove compounds by ___.

  • reacting with the other compounds.
  • changing the ionization of the pH sensitive functional groups
  • changing boiling points of the compounds
  • removing salt from the mixture

Reference no: EM132015513

Questions Cloud

On standard expected return versus standard deviation graph : On a standard expected return versus standard deviation graph, what can you say about the desired sharpe ratio?
Identify a strong base that is also a weak nucleophile : How do we identify a strong base that is also a weak nucleophile? Because elimination reactions prefer strong base and weak nucleophile reagents
Solution of potassium hydroxide would be required : What volume, in L, of a 0.00945-M solution of potassium hydroxide would be required to titrate 50.00 mL of a sample of acid rain with a H2SO4concentration
Mixture and acid in the separatory funnel : A student has the mixture and acid in the separatory funnel, after shaking and venting the funnel two layers appear. When the student turns open
Crystal lattice require less energy to break the lattice : For a melting point determination, if the compound is less pure, then the melting point will generally be higher or lower and why?
Acid or base liquid-liquid extraction : In general, for an acid or base liquid-liquid extraction we generate some type of salt. We take advantage of the fact that this salt is ____ soluble
Types of costs would not be included : Which of the following types of costs would not be included in the $10,045 million?
What do healthy communities have in common : What is your idea of a healthy community? Provide specific examples. What do healthy communities have in common? How would you provide care for a community.
The business in form of ordinary income and capital gains : It is the minimum rate of return on equity that owners must receive from the business in the form of ordinary income and capital gains.

Reviews

Write a Review

Chemistry Questions & Answers

  Acetylene to use in conjunction with your welding torch

Imagine that you have a 7.00 gas tank and a 3.50 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.

  How to calculate the enthalpy change to convert

Calculate the enthalpy change (energy needed) to convert 18 grams of ice at 0 Celcius to water vapor(steam) at 100 Celcius under constant pressure.

  Explain the freezing point of pure benzene

The freezing point of pure benzene is 5.5 Celsius and its freezing point constant is 5.12 C/m. Calculate the molecular weight of the unknown.

  Evaluate the molar solubility of copper sulfide

Calculate the molar solubility of copper(II) sulfide in each liquid or solution. (See the table.) (a) pure water M (b) 0.43 M CuCl2 M (c) 0.17 M K2S M

  A gas occupying a volume of 810 ml at a pressure of 0970

a gas occupying a volume of 810. ml at a pressure of 0.970 atm is allowed to expand at constant temperature until its

  What is the enthalpy of this reaction

Assume that no heat is lost to the surroundings or to the coffee cup itself. Assume that the mass of the solution is equal to the mass of the water.

  What is the minimum number of microwave photons

What is the minimum number of microwave photons with a wavelength of 3.07 mm that will have to be absorbed by a 126.00 gram sample of water to heat it from 25°C to 100°C?

  Which is more difficult removing the valence electron from

which is more difficult removing the valence electron from potassium or removing the valence electron from sodium

  What is the ph at the equivalence point in the titration

Question- What is the pH at the equivalence point in the titration of 100mL of 0.25 M acetic acid with 0.25 M NaOH? (Ka = 1.8x10^-5)

  Explain nonpolar covalent based solely on element''s

Consider the following element combinations. Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table

  State what temperature the vapor pressure of pure benzene

At a certain temperature the vapor pressure of pure benzene and pure toluene are 380 torr and 130 torr, respectively. If 7.50 mol benzene is mixed with 6.64 mol toluene

  What volume (ml) of an aqueous solution

Question- What volume (mL) of an aqueous solution that is 38.00 % by mass hydrochloric acid (conc) and has density of 1.17 g/mL must be diluted with water to make 300 mL of 3.90 M hydrochloric acid

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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