Star InactiveStar InactiveStar InactiveStar InactiveStar Inactive
 

The indicator of spontaneity of a process at constnt T and P. If delta-G is negative, the process is spontaneous.

Latest Articles

  • Harmful Chemicals Found In Food

    It's getting close to New Years and many people are starting to think about how to lose those extra pounds they managed to gain over the holidays. There are many sorts of diets and fads that have developed over the years from cutting carbs to cutting protein. Everyone has their own opinion as to...

  • Why do copper products change color, and what is the name of the process?

    Probably, every person wants to know, why over time the copper turns green and becomes bloomed. This is easy to explain: that film is called patina.

  • What's In Your Beverage? How to Ensure Quality Control with CO2 Analytical Support

    Calibration standards, performance audits, and the FDA's never-ending safety, labeling, and inspection requirements are just the tip of the iceberg when it comes to dealing with the increasingly stringent quality control standards of the beverage industry. As these quality standards become...

  • The most expensive metal in the world

    Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.

  • Creating Malachite egg

    One of the most interesting and obvious chemical experiments is the experiment on the interaction of copper sulfate and calcium carbonate. The latter is contained in the shell of a simple egg, but copper sulphate should be searched in a chemical reagent store. This experience is simple, but...



Most Popular

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Oxidation-reduction Reactions

Reactions in which oxidation and reduction occur, also called redox reactions.

Salt Bridge

A U-shaped tube containing electrolyte, which connects two half-cells of a voltaic cell.

Effective Nuclear Charge

The nuclear charge experienced by the outermost electrons of an atom, the actual nuclear charge minus the effects of shielding due to inner-shell electrons.
Example: Set of dx2-y2 and dz2 orbitals, those d orbitals within a set with lobes directed along the x-, y-, and z-axes.

Percent by Mass

100% times the actual yield divided by theoretical yield.

Solvation

The process by which solvent molecules surround and interact with solute ions or molecules.

Formula Weight

The mass of one formula unit of a substance in atomic mass units.

 

Anion

A negative ion, an atom or goup of atoms that has gained one or more electrons.

 

Polyene

A compound that contains more than one double bond per molecule.

Chemical Change

A change in which one or more new substances are formed.