Question

name:period:date:chemistry testbalancing & types of chemical reaction**for 1-10, indicate the type of reaction. s, d, c, sr, dr1) mg + hcl → mgcl₂ + h₂2) sn(clo₃)₂ → o₂ + sncl₂3) c₂h₄ + o₂ → co₂ + h₂o4) pb + p → pb₃p₄5) baso₄ + hbr → babr₂ + h₂so₄6) mgo → mg + o₂7) c₆h₁₄ + o₂ → co₂ + h₂o8) csi + cl₂ → cscl + i₂9) ag₂c₂o₄ + be₃(po₃)₂ → ag₃po₃ + bec₂o₄10) na + o₂ → na₂o

Explanation:

Step1: Classify reaction 1

Single Replacement (SR): Element replaces another in compound.
$\text{Mg} + 2\text{HCl}
ightarrow \text{MgCl}_2 + \text{H}_2$

Step2: Classify reaction 2

Decomposition (D): Single compound breaks down.
$\text{Sn(ClO}_3\text{)}_2
ightarrow 3\text{O}_2 + \text{SnCl}_2$

Step3: Classify reaction 3

Combustion (C): Hydrocarbon + O₂ → CO₂ + H₂O.
$\text{C}_2\text{H}_4 + 3\text{O}_2
ightarrow 2\text{CO}_2 + 2\text{H}_2\text{O}$

Step4: Classify reaction 4

Synthesis (S): Elements form single compound.
$12\text{Pb} + 4\text{P}
ightarrow 4\text{Pb}_3\text{P}_4$ (simplified: $3\text{Pb} + \text{P}
ightarrow \text{Pb}_3\text{P}_4$)

Step5: Classify reaction 5

Double Replacement (DR): Ions swap between compounds.
$\text{BaSO}_4 + 2\text{HBr}
ightarrow \text{BaBr}_2 + \text{H}_2\text{SO}_4$

Step6: Classify reaction 6

Decomposition (D): Single compound breaks down.
$2\text{MgO}
ightarrow 2\text{Mg} + \text{O}_2$

Step7: Classify reaction 7

Combustion (C): Hydrocarbon + O₂ → CO₂ + H₂O.
$2\text{C}_6\text{H}_{14} + 19\text{O}_2
ightarrow 12\text{CO}_2 + 14\text{H}_2\text{O}$

Step8: Classify reaction 8

Single Replacement (SR): Element replaces another in compound.
$2\text{CsI} + \text{Cl}_2
ightarrow 2\text{CsCl} + \text{I}_2$

Step9: Classify reaction 9

Double Replacement (DR): Ions swap between compounds.
$3\text{Ag}_2\text{C}_2\text{O}_4 + \text{Be}_3(\text{PO}_3)_2
ightarrow 2\text{Ag}_3\text{PO}_3 + 3\text{BeC}_2\text{O}_4$

Step10: Classify reaction 10

Synthesis (S): Elements form single compound.
$4\text{Na} + \text{O}_2
ightarrow 2\text{Na}_2\text{O}$

Answer:

1. SR (Single Replacement)
2. D (Decomposition)
3. C (Combustion)
4. S (Synthesis)
5. DR (Double Replacement)
6. D (Decomposition)
7. C (Combustion)
8. SR (Single Replacement)
9. DR (Double Replacement)
10. S (Synthesis)