Week 6 Reactions between Acids and Carbonates, and Acids and Hydrogen carbonates
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Mid-Topic Test
Task 1 The reaction between acid and carbonate
The reaction between carbonates or hydrogen carbonates and acids is extremely useful in the cooking of cakes. A mixture of powdered tartaric acid (cream of tartar) and baking soda react when they are wet. Baking soda is sodium hydrogen carbonate, also called sodium bicarbonate or ‘bicarb’. The reaction produces carbon dioxide gas, which forms bubbles in the cake mix and leaves small holes in the cake. This causes it to rise when heated (cooked).
Purpose: To observe the products of the chemical reaction between an acid and a carbonate.
Equipment
Dropper bottles of the following chemicals: 2M hydrochloric acid (HCl), marble pieces (calcium carbonate), test tube, gas delivery tube, limewater solution.
Purpose: To observe the products of the chemical reaction between an acid and a carbonate.
Equipment
Dropper bottles of the following chemicals: 2M hydrochloric acid (HCl), marble pieces (calcium carbonate), test tube, gas delivery tube, limewater solution.
Procedure
1 Add a few marble pieces to a test tube. Half-fill another test tube with limewater. 2 Half-fill the reaction test tube with 2M hydrochloric acid solution and bubble the gas through the limewater solution as shown in Figure 5.4.7 Results Record your observations as the marble (calcium carbonate) reacts with the acid, including the effect of the gas on the limewater. |
Conclusion
Write the equation for the reaction between hydrochloric acid and calcium carbonate.
Write the general equation for the reaction between hydrochloric acid and calcium carbonate.
Write the equation for the reaction between hydrochloric acid and calcium carbonate.
Write the general equation for the reaction between hydrochloric acid and calcium carbonate.
Task 2 Study for the Test
Wednesday 13 March - Mid-Topic Chemistry test to week 4 on the Chemistry program.
Concept Map
Concept Map
Task 3 Wednesday 13 March - Mid-Topic Chemistry test to week 4 on the Chemistry program.
TAsk 4 Thursday 14 March or Friday 15 March Air Project
Bring work to do in class.