Aim: To observe the law of conservation of plug using the reaction of atomic number 11 carbonate, calcium chloride and sulphuric hot and to show the importance of careful measurements when using instruments, namely, an electronic balance.
machine:
Laboratory Balance
3 Rubber Stoppers (to fit campaign tubes and flask)
one hundred twenty-five mL Conical Flask
3 Labels
Safety Goggles
Laboratory Coat
10 mL Graduated Cylinder
2 Test tubes (13 × 100 mm)
10.0 mL Sodium Carbonate (1M)
3.0 mL Calcium Chloride (1M)
3.0 mL sulphuric Acid (1M)
Method:
Sodium carbonate was measured in a graduated cylinder, then transferred into a clean, dry Erlenmeyer flask and stopper with a caoutchouc stopper. Calcium chloride and sulfuric pane of glass were placed in separate test tubes which were stoppered with sorry stoppers and labeled. The stoppered flask, both test tubes and an empty beaker to hold the test tubes were placed on an electronic balance and the stool was put down and labeled stilt a. The calcium chloride solution was added to the sodium carbonate solution and the flask was swirled. The flask and empty beaker were stoppered and replaced on the electronic balance with the sulfuric blistery and the mass was recorded and labeled mass b.
The sulfuric acid was added to the flask. The flask was swirled without the rubber stopper and left to cool. The three containers, rubber stoppers and contents were placed on the electronic balance and the mass was recorded and labeled mass c.
Results:
Mass aMass bMass c
194.60g194.78g194.69g
Table 1.0
When sodium carbonate and calcium chloride were combined, the resulting substance was heterogeneous and became cloudy. After a hardly a(prenominal) minutes, a grey powder settled on the perforate of the flask and the aqueous component became clear again. After sulfuric acid was added to the products of the first reaction, effervescence was observed. Additionally, the substance became cloudier....If you want to bring forth a full essay, order it on our website: Orderessay
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