Answer:
C- a method of testing an idea
We are given with a theoretical amount of 9 grams of product but the student only got 7.8 grams. To calculate the percent yield, we divide the experimental amount by the theoretical amount. In this case, we divide 7.8 grams by 9 grams and multiply by 100 percent. The answer is equal to 86.67 percent.
That’s wrong it is a physical change. And that is because only the states are being changed. No bonds are broken or made during this inside the actual compound.
Answer:
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Explanation:
Answer:
4 Ag⁺ + 2 H₂O + BrO⁻ → 4 Ag + BrO₃⁻ + 4 H⁺
Explanation:
In order to balance a redox reaction, we will use the ion-electron method.
Step 1: Identify both half-reactions
Reduction: Ag⁺ → Ag
Oxidation: BrO⁻ → BrO₃⁻
Step 2: Perform the mass balance adding H⁺ and H₂O where necessary
Ag⁺ → Ag
2 H₂O + BrO⁻ → BrO₃⁻ + 4 H⁺
Step 3: Perform the electrical balance adding electrons where necessary
1 e⁻ + Ag⁺ → Ag
2 H₂O + BrO⁻ → BrO₃⁻ + 4 H⁺ + 4 e⁻
Step 4: Multiply both half-reactions by numbers that secure that the number of electrons gained and lost are equal
4 × (1 e⁻ + Ag⁺ → Ag)
1 × (2 H₂O + BrO⁻ → BrO₃⁻ + 4 H⁺ + 4 e⁻)
Step 5: Add both half-reactions
4 e⁻ + 4 Ag⁺ + 2 H₂O + BrO⁻ → 4 Ag + BrO₃⁻ + 4 H⁺ + 4 e⁻
4 Ag⁺ + 2 H₂O + BrO⁻ → 4 Ag + BrO₃⁻ + 4 H⁺