How the concentration of an acid affects the rate of reaction on marble chips
Background:
These different speeds of reaction are referred to as their rates. The rate of reaction depends on how often and how hard the reacting particles collide with each other. Particles have to collide in order to react, and the have to collide hard enough as well. This is called the collision theory.
When the temperature is increased the particles all move quicker. If they are moving quicker then they are going to have more collisions.
Reactions only happen if the particles collide with enough energy. At a higher temperature there will be more particles colliding with enough energy to make the reaction happen. This initial energy is known as the activation energy, and it is needed to break the initial bonds. If one of the reactants is a solid then breaking it up into smaller pieces will increase its surface area. This means the particles around it in the solution will have more area to work on so there will be more useful collisions. A catalyst works by giving the reacting particles something to stick to where they can bump into each other. This obviously increases the number of collisions too. If the solution is made more concentrated it means that there are more particles of reactant knocking about between the water molecules, which makes collisions between the important particles more likely.
Chemists overseeing large reactions in industrial situations must carefully consider the rates of reactions. For some reactions, such as the production of a final material, fast reactions will be desirable to increase production and therefore sales profit. For other reactions, such as the degradation of a material, reducing the rate may be beneficial to increase the lifetime of a product.
Times Education Series Chemistry GCSE
Plan:
I will investigate how the concentration affects the rate of reaction between hydrochloric acid and calcium carbonate (marble chips). The rate of reaction can be measured by measuring the amount of gas produced after a certain amount of time.
The reaction will take place in the conical flask from where the gas produced will travel into the up-turned measuring cylinder. The gas will then displace the water in the tube. I will measure out exactly
50ml of 1molar hydrochloric acid into the conical flask. I will then weigh out exactly or as close as possible to 2 grams of small sized marble chips. I will put the chips into the flask with the acid and immediately place the bung over it so as to lose as little gas as possible. I will then take readings at intervals of fifteen seconds.
have either not stir the mixture or use a machine to stir it at the
Investigating the Rate of Reaction Between Marble Chips and Hydrochloric Acid I am investigating the rate of reaction between marble chips (calcium
The reason I believe this is that chemical reactions occur when particles of the reacting substances collide. Increasing the number of the particles increases the number of collisions per second and this increases the reaction rate. In the reaction between hydrochloric acid and calcium carbonate you can increase the number of particles in two ways. The first of these is to increase the surface area of the calcium carbonate.
...n was yet another display of the most beneficial style of leadership. Putting together teams, holding regular meetings in locations that were conducive to deep thinking, allowing debates, and discussions to take place, not choosing sides and arriving at a consensus is the very core of team building and fostering inclusive environments. Doing it all while displaying sound ethical principles routed in being a southern Baptist Minister enabled Dr. King to achieve huge successes as the primary leader of the Civil Rights Movement. Taking notes from one of the great leaders of yesteryear can and does help senior non-commissioned officers get better. Being an effective motivating speaker, putting the organization before self, team building, and having appropriate ethical principles to back it all up go hand in hand with leading Airman in today’s United States Air Force.
Still teaching in Graz, an idea appeared to Kepler; he devised a relationship involving the distances of the planets from the sun using geometric solid objects. In 1596, using this idea as the main theme, wrote a book which defended the Copernican system, Mysterium Cosmographicum. This book, although it was incorrect, caused his future mathematical explanations of the universe to occur. In addition, the book brought him the attention many scientists, such as Danish astronomer Tycho Brahe who invited Kepler to Prague and work with
Hedda Gabler is a text in which a very domineering society drives a woman to her suicidal death. Many argue that Hedda’s death is an act of courage, as rebellion against the rules of the society, however other believe that Hedda’s actions show cowardice, as she is unable to cope with the harsh reality of the her situation. Hedda's singular goal throughout the play has been to prove that she is still in possession of free will. Hedda shows many examples of both courage and cowardice throughout the play, differing to the character she is with.
The first snowfall signals the true arrival of the winter season in the Canadian tundra and woodland. A gray wolf sets out on a hunting expedition in the fresh, brisk air of the morning. A young, innocent bison, has been separated from its herd, it will soon be killed. In the eye’s of an unaware onlooker, the act is pure evil; that little bison did not deserve to die; however, the wolf is a mother and has hungry pups to feed. The pups would otherwise starve to death if she didn’t go hunting. Hedda Gabler is that wolf in Henrik Ibsen’s play Hedda Gabler. On the superficial level, Hedda establishes herself as immoral and with a sole intent to hurt others. Sympathetically, the wolf was purely hunting for survival. Similarly, Ibsen progressed
It is important however to note that the NH4 and K ions are still in
Ibsen’s Hedda Gabler portrays the societal roles of gender and sex through Hedda as a character trying to break the status quo of gender relations within the Victorian era. The social conditions and principles that Ibsen presents in Hedda Gabler are of crucial importance as they “constitute the molding and tempering forces which dictate the behavior of all the play's characters” with each character part of a “tightly woven social fabric” (Kildahl). Hedda is an example of perverted femininity in a depraved society intent on sacrificing to its own self-interest and the freedom and individual expression of its members. It portrays Nineteenth Century unequal relationship problems between the sexes, with men being the independent factor and women being the dependent factor. Many of the other female characters are represented as “proper ladies” while also demonstrating their own more surreptitious holdings of power through manipulation. Hedda Gabler is all about control and individualism through language and manipulation and through this play Ibsen shows how each gender acquires that or is denied.
Rate of Reaction Between Marble Chips and Hydrochloric Acid. The aim of this experiment is to find out how different variables affect the rate at which the reaction between Marble chips (CaCO ) and Hydrochloric acid (HCl) is used. There are many variables that affect the rate of this reaction such as the following. 1.
There were many scientist who helped with the early design of the telescope but Isaac Newton is known for inventing the reflecting or reflector telescope in 1668. This telescope was different because Newton used mirrors rather than lens. He used one mirror to capture the image whil the other mirror was used to reflect the image from the first mirror. This invention gave a clearer picture and helped to advance the study of planets, stars and other objects in the solar system.
Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid Plan: In my experiment I will measure the rate of reaction between calcium carbonate and hydrochloric acid. The rate of the reaction is the speed that the reaction takes place so by measuring the rate I will measure the amount of time the reaction takes. Hydrochloric acid is a strong acid that is found in digestive juices in the stomach, it is also used for cleaning metals before they are coated. Calcium carbonate has a few forms including chalk and limestone the main use of these two materials is in the making of concrete, which is used for many things such as buildings. When you put calcium carbonate and hydrochloric acid together they react to form calcium chloride, carbon dioxide and water.
The Effect of Temperature on the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate
The character of Hedda Gabler in Ibsen’s play is a unique and extraordinary person. There has been a lot of public dislike towards her and seen as a very manipulative, cold and even masculine portrayal of a woman. As stated by Jones “has imagination, and an intense appetite for beauty, she has no conscience, no conviction: with plenty of cleverness, energy, and personal fascination she remains mean, envious, insolent, cruel in protest against others ' happiness, fiendish in her dislike of inartistic people and things, a bully in reaction from her own cowardice." (2). Her personality was considered to be too different for the time that she lived in; it was seen as obstinate, and people went as far as to say she was less of a woman for the way
An investigation into how changing one variable influences the rate of reaction between marble chips and dilute Hydrochloric acid