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Worksheet #3: Decomposition Reactions In decomposition reactions, one compound will break down into two or more parts. 1. barium carbonate Æ 2. magnesium carbonate Æ 3. potassium carbonate Æ 4. zinc hydroxide Æ 5. Iron(II) hydroxide Æ 6. nickel(II) chlorate Æ 7. sodium chlorate Æ 8. potassium chlorate Æ 9.
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Chemistry Date_____ Period_____ Decomposition Worksheet Predict the products of the reaction below. Write the balanced equation. Include the phase information. Remember, ionic compounds are usually solid. Watch out for those diatomic molecules. Example: elect. 2H O(l) 2H (g) + O (g) 2 2 2 Example:
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Q: What is the chemical equation for the decomposition of hydrogen peroxide (H 2O 2) to water (H 2O) and oxygen (O 2)? A: The equation for this decomposition reaction is: 2 H 2O 2! 2 H 2O + O 2 Other Examples of Decomposition Reactions Two more examples of decomposition reactions are described below. You can see additional examples at this URL:
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The simplest kind of decomposition reaction is when a binary compound decomposes into its elements. Mercury (II) oxide, a red solid, decomposes when heated to produce mercury and oxygen gas. 2HgO(s) → 2Hg(l) +O2(g) Figure 11.5.2: Mercury (II) oxide is a red solid. When it is heated, it decomposes into mercury metal and oxygen gas.
This is an example of thermal decomposition. What is meant by ‘thermal decomposition’? [2 marks] _____ _____ 1.4 Both calcium carbonate and calcium oxide are white solids. The student weighed the white solid before and after heating. Explain why a decrease in mass was observed. Use the equation in part 1.3 to help you answer the question ...
1) Identify each reaction as synthesis or decomposition and 2) write a balanced chemical equation for each reaction. Phosphorous + oxygen à tetraphosphorous decaoxide. Iron(III) hydroxide à iron(III) oxide + water. Ammonia + sulfuric acid à ammonium sulfate. Carbon monoxide + oxygen à carbon dioxide.
Li 2 CO 3 ---> Li 2 O + CO 2. Example #3. How to figure out the right (or product side): (1) Identify the type of compound decomposing: KOH is a base. (2) Apply the rule for that type: bases decompose to the binary oxide and water. (3) Write two new (CORRECT!!) formulas using the rule from step two.
