Question

1. 2 mn + 6hi → 3h₂ + 2 mni₃ is this equation balanced? ______________
2. agno₃ + li → lino₃ + ag is this equation balanced? ______________
3. li₃po₄ + nabr → na₃po₄ + libr is this equation balanced? ______________

Explanation:

4)

Step1: Analyze reactants

• Elements in reactants: Mn (Manganese), H (Hydrogen), I (Iodine)
• Number of atoms in reactants:
• Mn: \(2\) (from \(2Mn\))
• H: \(6\) (from \(6HI\))
• I: \(6\) (from \(6HI\))

Step2: Analyze products

• Elements in products: Mn (Manganese), H (Hydrogen), I (Iodine)
• Number of atoms in products:
• Mn: \(2\) (from \(2MnI_{3}\))
• H: \(6\) (\(3H_{2}\) means \(3\times2 = 6\))
• I: \(6\) (\(2MnI_{3}\) means \(2\times3=6\))

Step3: Check balance

Since the number of atoms of each element (Mn, H, I) is the same on both sides (reactants and products), the equation \(2Mn + 6HI
ightarrow3H_{2}+2MnI_{3}\) is balanced.

5)

Step1: Analyze reactants

• Elements in reactants: Ag (Silver), N (Nitrogen), O (Oxygen), Li (Lithium)
• Number of atoms in reactants:
• Ag: \(1\) (from \(AgNO_{3}\))
• N: \(1\) (from \(AgNO_{3}\))
• O: \(3\) (from \(AgNO_{3}\))
• Li: \(1\) (from \(Li\))

Step2: Analyze products

• Elements in products: Ag (Silver), N (Nitrogen), O (Oxygen), Li (Lithium)
• Number of atoms in products:
• Ag: \(1\) (from \(Ag\))
• N: \(1\) (from \(LiNO_{3}\))
• O: \(3\) (from \(LiNO_{3}\))
• Li: \(1\) (from \(LiNO_{3}\))

Step3: Check balance

Since the number of atoms of each element (Ag, N, O, Li) is the same on both sides (reactants and products), the equation \(AgNO_{3}+Li
ightarrow LiNO_{3}+Ag\) is balanced.

6)

Step1: Analyze reactants

• Elements in reactants: Li (Lithium), P (Phosphorus), O (Oxygen), Na (Sodium), Br (Bromine)
• Number of atoms in reactants:
• Li: \(3\) (from \(Li_{3}PO_{4}\))
• P: \(1\) (from \(Li_{3}PO_{4}\))
• O: \(4\) (from \(Li_{3}PO_{4}\))
• Na: \(1\) (from \(NaBr\))
• Br: \(1\) (from \(NaBr\))

Step2: Analyze products

• Elements in products: Li (Lithium), P (Phosphorus), O (Oxygen), Na (Sodium), Br (Bromine)
• Number of atoms in products:
• Li: \(1\) (from \(LiBr\))
• P: \(1\) (from \(Na_{3}PO_{4}\))
• O: \(4\) (from \(Na_{3}PO_{4}\))
• Na: \(3\) (from \(Na_{3}PO_{4}\))
• Br: \(1\) (from \(LiBr\))

Step3: Check balance

The number of Li atoms (\(3\) in reactants vs \(1\) in products) and Na atoms (\(1\) in reactants vs \(3\) in products) are not the same. So the equation \(Li_{3}PO_{4}+NaBr
ightarrow Na_{3}PO_{4}+LiBr\) is not balanced.

Answer:

1. Yes.
2. Yes.
3. No.