There are two types of chemical reaction that occur one goes only in one direction and the other one is reversible. A reversible reaction is when a products starts to form the backward reaction starts where the products turns back to reactant molecules. When the rate of forward and backward reaction is already equal and the concentrations of the reactants and products no longer change with time we can say that chemical equilibrium is already achieved. A reaction is said to be at equilibrium when
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Subject –Chemistry Chemical Equations and reactions Very Short Answer (1 marks each) Write the name and formula of compounds forms between a. Potassium and iodine ion .b.Sodium and sulphide ions . c. Aluminums and chloride ions 2. Why does milk sour when kept for a long time/ 3. What happen when hydrogen combine with oxygen in presence of electric current/ 4. Define electrolysis. 5. What is decomposition reaction? Give an example 6. Calcium oxide react
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determine whether or not a chemical reaction occurred after the mixing of various chemicals. The evolution of a gas‚ the formation of precipitation‚ and the change of temperature or color are all indicative of a chemical reaction. It was assumed that a reaction did not take place if the mixture of chemicals exhibited none of these characteristics. Several precipitation‚ complex-ion formation‚ redox‚ and acid-base reactions were performed. Redox: Decomposition Reactions In a 13 x 100 mm test tube‚ 2 mL
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temperature on reactions between the enzyme catalase found in animal tissue with the substrate H2O2. The hypothesis stated that an increase in the temperature of the substrate would create a subsequent increase in the rate of reaction between the enzyme and the substrate. This hypothesis was tested by immersing 1cm cubes of animal tissue (sheep liver) which contained the enzyme catalase into the substrate (H2O2 ) mixed with detergent which foamed showing a visual display of the reaction. After 10 seconds
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Introduction The Diels-Alder Reaction is a reaction used in organic chemistry that builds rings very efficiently (1)‚ this cycloaddition process allows for the stereoselective formation of cyclohexene rings possessing as many as four contiguous stereogenic centers (3). This reaction occurs without intermediates‚ in a single step‚ which explains the stereospecificity due to substituents not being given the chance to “switch around”. (1)These six membered rings are synthesized by reacting a dienophile
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Energy‚ often in the state of heat‚ is involved in chemical reactions and phases changes. Changes in energy‚ can translate in temperature differentiations. In such a case‚ energy is transferred as heat. The quantity of heat exerted in a reaction referred to as (joules) can be identified through the following equation: Heat Exerted= (Mass of Sample) x (Specific Heat) x (Change in Temperature) q=msΔT Within a calorimeter is where the reactions within this lab take place. A calorimeter allows the quantity
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electric current to drive an otherwise non-spontaneous chemical reaction. During electrolysis‚ hydrogen atoms (H2) are reduced at the cathode whereas the oxygen atoms (O2) are oxidized at the anode. There were three different solutions used in the experiment in order to have a better understanding of electrolysis reactions. From each solution‚ reaction equations were produced. The reactions could be observed from the indicators used. The reactions showed that hydrogen ions were produced at the anode‚ making
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Reaction Paper 1 Reaction Paper 1 The movie is about the responsive brain and the behaving brain. The brain is one of the most dynamic systems on the planet‚ for as much work the brain does and its complexity. It’s amazing how a simple thing like touch can be communicated through emotions. The movie talks about how the touch of a mother affects how a both a healthy baby develops and premature babies. The touch of the mother helps the baby develop with regards to their weight‚ how active they
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Reaction Paper—Nonfiction ENG/125 August 29‚ 2012 Dr. Stripling Reaction Paper—Nonfiction When reading I came across some interesting non-fiction story and letter written by well known authors. They were all good but there was two that I had the most reaction to. When I came across these two letters I felt like I had a connection with the author. The letter Salvation by Langston Huge‚ when I read could relate to it cause I to come from a christen background‚ and in the story by Lam about
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The error in this step was caused by the variable heating of the solution to prevent bubbling of the solution. The reaction of copper with nitric acid resulted in a brown toxic gas‚ As the copper dissolved‚ the solution slowly turned blue because of the copper ions. this is the balanced equation for the reaction Cu(s) + 4H+(aq) + 2NO3-(aq)---> Cu2+(aq) +2NO2(g) + 2H2O(l) The reaction of aq copper nitrate with sodium hydroxide was the turning of the solution to a blue color‚ when water was added a
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