Scrigroup - Documente si articole

Username / Parola inexistente      

Home Documente Upload Resurse Alte limbi doc  

 
CATEGORII DOCUMENTE





BulgaraCeha slovacaCroataEnglezaEstonaFinlandezaFranceza
GermanaItalianaLetonaLituanianaMaghiaraOlandezaPoloneza
SarbaSlovenaSpaniolaSuedezaTurcaUcraineana

AdministrationAnimalsArtBiologyBooksBotanicsBusinessCars
ChemistryComputersComunicationsConstructionEcologyEconomyEducationElectronics
EngineeringEntertainmentFinancialFishingGamesGeographyGrammarHealth
HistoryHuman-resourcesLegislationLiteratureManagementsManualsMarketingMathematic
MedicinesMovieMusicNutritionPersonalitiesPhysicPoliticalPsychology
RecipesSociologySoftwareSportsTechnicalTourismVarious

Reactions of calcium carbonate and hydrochloric acid

chemistry

+ Font mai mare | - Font mai mic







DOCUMENTE SIMILARE

Trimite pe Messenger
A Technical Note on Nitrogen Balance
New Families of Enantiopure Cyclohexenone cis-Diol, o-Quinol Dimer and Hydrate Metabolites from Dioxygenase-catalysed Dihydroxylation of Phenols
Basic Properties of Petroleum
COROSION RESISTANCE AND WEATHERING STEELS
Influence of mechanical factors on surface layer of acrylic coatings modified with nanofillers
Reactions of calcium carbonate and hydrochloric acid
Structure Determination: Nuclear Magnetic Resonance Spectroscopy
Conjugated Dienes and Ultraviolet Spectroscop
Determination Of A Rate Equation
ENZYMIC IODINATION OF MALEIC AND FUMARIC ACIDS DIETHYL ESTERS

††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† ††††††††††††††††††††††††††† Jessica Svensson


†††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††††† †††††††††††† 9A IESJ


Rate of Reactions

Reactions of calcium carbonate and hydrochloric acid

We did this experiment to see the rate of reaction when mixing calcium carbonate with hydrochloric acid under different conditions.

Materials:

Measuring cylinder†††††††††††† Conical flask†††††††††††††††††††††† Hot plate†††††††††††††††††††††††††††† Spatula

50 ml 1M hydrochloric acid (HCl) x3†††††††††††††††††††††††††† 50 ml 2.0M hydrochloric acid x1

Calcium carbonate (chips)Calcium carbonate (powder)††††††††††††††††††† Electronic balance

Thermometer

Measure 50 ml of HCl into the conical flask and then add 3g of calcium carbonate. Do this four times and measure the mass every 2 minutes.

In the first experiment, do nothing special. In the second experiment, use powdered calcium carbonate instead of chips. In the third experiment, change the temperature by using the hot plate. In the fourth experiment, use a double concentration of acid.

Make sure to wear safety goggles at all times, as the acid may cause damage to your eyes.

Results:

Concentration

Temp sC

Size of

Mass (g)

 

 

 

 

 

of acid

 

CaCO3

0 min

2 min

4 min

6 min

8 min

10 min

Exp.1†††††††††† 1

20

Normal

131.4

131.3

131.4

131.3

131.3

131.3

Exp.2†††††††††† 1

20

Powder

126.5

125.8

125.8

125.8

125.8

125.8

Exp.3†††††††††† 1

40-90

Normal

125.6

128.1

128.1

127.8

127.8

127.3

Exp.4†††††††††† 2

20

Normal

128.2

128.1

128.0

128.0

128.0

128.0

Conclusion

Experiment 2 had the fastest reaction, while the slowest reaction belonged to experiment 3. This shows that changing the temperature didnít help a lot, but the most probable reason this happened is for a fault in the experiment. That experiment 2 was the fastest shows that itís easier to react with the acid when you have a powder than with chips. This is because the smaller the particles, the less there is to break down for the acid.

Evaluation

This experiment could have been done a lot better. If you look at the results, some of them show that the experiment gained weight from time to time instead of loosing it.

One thing that could have made this better would have been to make sure all chips were the same size. This would make all the experiments equal from the start, until you change the conditions.

Another would be to have even more accurate scales.

Also, performing these experiments several times instead of just once per condition would have helped to get a more accurate result.

DISTRIBUIE DOCUMENTUL

Comentarii


Vizualizari: 1149
Importanta: rank

Comenteaza documentul:

Te rugam sa te autentifici sau sa iti faci cont pentru a putea comenta

Creaza cont nou

Distribuie URL

Adauga cod HTML in site



Termeni si conditii de utilizare | Contact
© SCRIGROUP 2019. All rights reserved