The reverse reaction ( in free space, without an atomic nucleus ) is also impossible for this reason.

Usually, this state results when the forward reaction proceeds at the same rate as the reverse reaction.

The reaction rates of the forward and reverse reactions are generally not zero but, being equal, there are no net changes in the concentrations of the reactant and product.

For any reaction mixture to exist at equilibrium, the rates of the forward and backward ( reverse ) reactions are equal.

Adding a catalyst will affect both the forward reaction and the reverse reaction in the same way and will not have an effect on the equilibrium constant.

For example, adding more S from the outside will cause an excess of products, and the system will try to counteract this by increasing the reverse reaction and pushing the equilibrium point backward ( though the equilibrium constant will stay the same ).

In the catalyzed elementary reaction, catalysts do not change the extent of a reaction: they have no effect on the chemical equilibrium of a reaction because the rate of both the forward and the reverse reaction are both affected ( see also thermodynamics ).

Then, removing the catalyst would also result in reaction, producing energy ; i. e. the addition and its reverse process, removal, would both produce energy.

The forward and reverse reactions are competing with each other and differ in reaction rates.

These rates depend on the concentration and therefore change with time of the reaction: the reverse rate gradually increases and becomes equal to the rate of the forward reaction, establishing the so-called chemical equilibrium.

Changes in temperature can sometimes reverse the direction of a reaction, as in the Boudouard reaction:

The reverse reaction is possible, and thus the acid / base and conjugated base / acid are always in equilibrium.

In genetics, complementary DNA ( cDNA ) is DNA synthesized from a messenger RNA ( mRNA ) template in a reaction catalyzed by the enzyme reverse transcriptase and the enzyme DNA polymerase.

Berthollet was one of the first chemists to recognize the characteristics of a reverse reaction, and hence, chemical equilibrium.

This reaction can be driven in reverse by applying a voltage, resulting in the deposition of zinc metal at the anode and formation of copper ions at the cathode.

Both electrodes undergo the same chemistry ( although the reaction proceeds in reverse at the cathode )

Further purification is effected by a chemical transport reaction developed by Arkel and de Boer: In a closed vessel, hafnium reacts with iodine at temperatures of 500 ° C, forming hafnium ( IV ) iodide ; at a tungsten filament of 1700 ° C the reverse reaction happens, and the iodine and hafnium are set free.

But after all, can anyone imagine a market wherein the reverse of these things were true??

New technologies, like reverse osmosis can create unlimited amounts of pure water from polluted water, ocean water, and even from humid air.

The reverse process in which electrons are released in redox reactions and can be used as electrical energy is possible and is used in the batteries.

Defendants can hold reverse auctions and any of several parties can engage in collusive settlement discussions.

In one paper presented at an ABA conference on class actions in 2007, authors commented that " competing cases can also provide opportunities for collusive settlement discussions and reverse auctions by defendants anxious to resolve their new exposure at the most economic cost.

They can also be used as low loss rectifiers, although their reverse leakage current is in general higher than that of other diodes.

This can be seen from the inverse properties above: operating twice gives the original data in reverse order, so operating four times gives back the original data and is thus the identity matrix.

The Autonav system can also be used in reverse, tracking the position of bodies relative to the spacecraft.

Although this information can instead be learned by reverse engineering, this is much more difficult with hardware than it is with software.

Quadratic equations can also be solved using factorization ( the reverse process of which is expansion, but for two linear terms is sometimes denoted foiling ).

In many contexts, the word encryption may also implicitly refer to the reverse process, decryption e. g. “ software for encryption ” can typically also perform decryption.

Seismologists can use the arrival times of seismic waves in reverse to image the interior of the Earth.

The ineffectiveness of the completeness theorem can be measured along the lines of reverse mathematics.

Since acarbose and other alpha-glucosidase inhibitors prevents starch and other sugars from being broken down into monosaccharides that can be absorbed by the body, patients taking these medications should consume monosaccharide-containing foods such as glucose tablets, honey, or juice to reverse hypoglycemia.

While in many geographical regions it is natural to think only of water moving out of aquifers into rivers, the reverse can also happen.

Many cycles can run in reverse to move heat from the cold side to the hot side, making the cold side cooler and the hot side hotter.

In that it is biconditional, the connective can be likened to the standard material conditional (" only if ", equal to " if ... then ") combined with its reverse (" if "); hence the name.

In many computers, one can reduce the work of the first comparison by scanning the items in reverse order.

Contemporary work in the foundations of mathematics often focuses on establishing which parts of mathematics can be formalized in particular formal systems ( as in reverse mathematics ) rather than trying to find theories in which all of mathematics can be developed.

Musitek's SmartScore ( formerly MIDIScan ) software performs the reverse process, and can produce MIDI files from scanned sheet music.

Presumably, if the reverse is the case and the good effect is more certain than the evil result that may be forthcoming, not only must the good and the evil be prudentially weighed and found proportionate, but also calculation of the probabilities and of the degree of certainty or uncertainty in the good or evil effect must be taken into account.

Although all molecules that have the property of immunogenicity also have the property of antigenicity, the reverse is not true.

They are also called, respectively, Polish notation and reverse Polish notation.

It is also possible to reverse this style of deception, by suggesting a powerful stroke before slowing down the hitting action to play a soft stroke.

English texts on the right side of the vehicle are also quite commonly written in reverse order.

The $ 395 HP-35, along with nearly all later HP engineering calculators, used reverse Polish notation ( RPN ), also called postfix notation.

The reverse is also possible, with bar coded dice shuffling as a source of true random data for computers.

For example, while burning an area of fairly thick forest and thus turning it into a more open, grassy environment might reduce the viability of a large browser ( an animal that eats leaves and shoots rather than grasses ), the reverse could also be true: removing the browsing animals ( by eating them, or by any other means ) within a few years produces a very thick undergrowth which, when a fire eventually starts through natural causes ( as fires tend to do every few hundred years ), burns with greater than usual ferocity.

Digital rights management systems which prevent unauthorized use or reproduction of copyrighted material and protect software against reverse engineering ( see also copy protection ) are another somewhat different example of using encryption on data at rest.

See also US reverse side flag.

They also found the reverse side of the “ door ” to be finished and polished, which suggests that it wasn ’ t put there just to block the shaft, but rather for a more specific reason.

However, Guarducci also states that in 1950 an ancient image of Mary at the Church of Santa Francesca Romana was determined to be a very exact, but reverse mirror image of the original circular icon that was made in the 5th century and brought to Rome, where it has remained until the present.

Close-up of back of stockinette stitch, also same appearance as reverse stockinette stitch

This kick is also known as a heel kick, reverse turning kick, reverse round kick, spinning hook kick, or spin kick.