Which equation is correct essay

This meant that when the sodium bicarbonate was heated the H,C, and O molecules were released and formed water and carbon dioxide. Since the capacity of the syringe is cm3, anything less than cm3 would not give a reliable result. Next write your introduction paragraph i.

To do this I will need to multiply the moles and the RMM of copper carbonate. CuCO3 is a green powder and when it decomposes with heat, gas is released.

Single replacement In the reaction the zinc turned black while the solution remained somewhat the same.

Chemical Equations Lab Report

Furthermore, the balance has an error so there is again the chance of overfilling the syringe. There are UK writers just like me on hand, waiting to help you. Also the volume of gas given off depends upon the molar quantities.

Some of the precautions I will undertake: The number eleven for the ph strip means that the solution created was basic. Therefore to find out the correct equation I will need to decompose the copper carbonate by heating and after this I will measure the amount of gas produced.

Professional Development; Exam Information; You'll find new sections for: It is possible to determine which equation is correct by measuring the volume of gas given off by the decomposition. The gas released indicated the release of carbon dioxide as well and the liquid that condensed on the test tube indicated the release of water.

A quick and simple way to check if the syringe is faulty is to draw a convenient volume of air into the syringe, e.

Chemistry coursework which equation is correct

Drop a 2 — cm piece of Mg ribbon into the test tube 4. Milky white and zinc at bottom Reaction G Before: From this information I have an indication that copper carbonate produces copper oxide when heated. The zinc turned black because it was gaining the sulfate sulfur and oxygen.

After that apparatus cooled down the air then contracted. It also would be difficult to reverse the reaction because the calcium oxide and hydrogen were chemically combined so they would have to be uncombined by chemical means rather than just evaporating the water or by some other physical means.

To minimise the chances of this happening, while heating the test tube, move the flame to different places of the test tube making sure it is kept far enough from the rubber bungthis stops only one part being heated.

Add drops of MnO2 to a test tube 3. To begin, try and find four points that will help you to explain or prove your point. To collect the gas I will use a gas syringe with a bung connected to the boiling tube.

Power dissolving into water After: Observe the reaction for minutes 4. Gas released and water conducted; blazing splint went out; cobalt II chloride paper turned pink After: Spread potassium nitrate out at the bottom of the test tube. If you are given a title and a direction to follow, make sure that you do.

Essay UK - http: This will increase the surface area and therefore increase the reaction rate. Dismantle the apparatus and stand the tube in a dry cm3 beaker on a top-pan balance.

Then, if possible, put the essay away for a day or two before proof reading again — you will be surprised at how many things you will find to correct. The volume of gas will help me determine which equation is correct. I will need to measure the mass of copper carbonate as this will tell me the amount of copper carbonate needed in grams for the experiment and if it is correct it will show me what equation is correct.

In the pro dog example you could use: I will set the clamp holding the boiling tube to a fixed position and I will not move it, just unscrew the holder to empty the boiling tube when the experiment has finished. Assemble the apparatus again, remembering to clamp the test tube horizontally close to its open end.

Weight as accurately as possible, the calculated mass this will be calculated and shown later in the write-up into the test tube which is standing inside the beaker.

Usually an equation is followed by a comma after it is presented especially when followed by descriptions of its individual members or by a period if the sentence has ended. Using my knowledge of moles I can calculate the amount of gas that will be produced for both equations.

A quick and simple way to check if the syringe is faulty is to draw a convenient volume of air into the syringe, e.

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Which Equation is Correct? Essay Sample

Equation 1 – 2CuCO3(s) Cu2O(s) + 2CO2(g) + 1/2O2 Equation 2 – CuCO3(s) CuO(s) + CO2(g) By using the formula for moles and the volume of gas, I am able to predict the volume of gas produced before I have actually implemented the experiment.

Which Equation is Correct? Essay Sample. Aim: Copper has two oxides, Cu2O and CuO. Copper carbonate, CuCO3, decomposes on heating to form one of these oxides and an equation can be written for each possible reaction.

Which equation is correct essay
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Chemistry coursework which equation is correct