identify each of the following equations for a synthesis, decomposition, single replacement, double…
identify each of the following equations for a synthesis, decomposition, single replacement, double replacement, or combustion.\n21. cao + co₂ → caco₃\n22. mgco₃ → mgo + co₂\n23. c₆h₁₂o₆ + 6o₂ → 6h₂o + 6co₂\n24. 2hno₃ + mg(oh)₂ → mg(no₃)₂ + 2h₂o\n25. ca + 2h₂o → ca(oh)₂ + h₂\n26. 3fe + 2o₂ → fe₃o₄\n27. cl₂ + 2ki → 2kcl + i₂\n28. ba(no₃)₂ + na₂so₄ → baso₄ + 2nano₃\n29. 2ag₂o → 4ag + o₂\n30. 2c₆h₆ + 15o₂ → 6h₂o + 12co₂\nbalance the following equations:\n31) mg + o₂ → mgo\n32) cu + s₈ → cus\n33) albr₃ + cl₂ → alcl₃ + br₂
Answer
Explanation:
Step1: Identify reaction types
21. Synthesis reaction
Two substances combine to form one product. $CaO + CO_2\rightarrow CaCO_3$ is a synthesis reaction as calcium - oxide and carbon - dioxide combine to form calcium carbonate.
22. Decomposition reaction
One compound breaks down into two simpler substances. $MgCO_3\rightarrow MgO + CO_2$ is a decomposition reaction as magnesium carbonate decomposes into magnesium oxide and carbon - dioxide.
23. Combustion reaction
A compound reacts with oxygen to produce carbon - dioxide and water. $C_6H_{12}O_6+6O_2\rightarrow 6H_2O + 6CO_2$ is a combustion reaction as glucose reacts with oxygen.
24. Double - replacement reaction
Ions in two compounds exchange places. $2HNO_3+Mg(OH)_2\rightarrow Mg(NO_3)_2 + 2H_2O$ is a double - replacement reaction as the $H^+$ from nitric acid and $Mg^{2 + }$ from magnesium hydroxide exchange places.
25. Single - replacement reaction
One element replaces another in a compound. $Ca + 2H_2O\rightarrow Ca(OH)_2+H_2$ is a single - replacement reaction as calcium replaces hydrogen in water.
26. Synthesis reaction
Two substances combine to form one product. $3Fe + 2O_2\rightarrow Fe_3O_4$ is a synthesis reaction as iron and oxygen combine to form iron oxide.
27. Single - replacement reaction
One element replaces another in a compound. $Cl_2+2KI\rightarrow 2KCl + I_2$ is a single - replacement reaction as chlorine replaces iodine in potassium iodide.
28. Double - replacement reaction
Ions in two compounds exchange places. $Ba(NO_3)_2+Na_2SO_4\rightarrow BaSO_4 + 2NaNO_3$ is a double - replacement reaction as the $Ba^{2+}$ and $Na^+$ ions exchange places.
29. Decomposition reaction
One compound breaks down into two simpler substances. $2Ag_2O\rightarrow 4Ag+O_2$ is a decomposition reaction as silver oxide decomposes into silver and oxygen.
30. Combustion reaction
A compound reacts with oxygen to produce carbon - dioxide and water. $2C_6H_6+15O_2\rightarrow 6H_2O + 12CO_2$ is a combustion reaction as benzene reacts with oxygen.
Step2: Balance equations
31. $2Mg+O_2\rightarrow 2MgO$
On the left - hand side, we have 2 magnesium atoms and 2 oxygen atoms. On the right - hand side, we have 2 magnesium atoms and 2 oxygen atoms.
32. $8Cu + S_8\rightarrow 8CuS$
On the left - hand side, we have 8 copper atoms and 8 sulfur atoms. On the right - hand side, we have 8 copper atoms and 8 sulfur atoms.
33. $2AlBr_3+3Cl_2\rightarrow 2AlCl_3 + 3Br_2$
On the left - hand side, we have 2 aluminum atoms, 6 bromine atoms, and 6 chlorine atoms. On the right - hand side, we have 2 aluminum atoms, 6 chlorine atoms, and 6 bromine atoms.
Answer:
- Synthesis reaction
- Decomposition reaction
- Combustion reaction
- Double - replacement reaction
- Single - replacement reaction
- Synthesis reaction
- Single - replacement reaction
- Double - replacement reaction
- Decomposition reaction
- Combustion reaction
- $2Mg+O_2\rightarrow 2MgO$
- $8Cu + S_8\rightarrow 8CuS$
- $2AlBr_3+3Cl_2\rightarrow 2AlCl_3 + 3Br_2$