Question
4. bromine + calcium iodide \( \rightarrow \) calcium bromide + iodine 5. zinc sulfide + magnesium arsenate \( \rightarrow \) zinc arsenate + magnesium sulfide 6. cobalt + lead(II) nitrite \( \rightarrow \) cobalt(III) nitrite + lead 7. potassium + water \( \rightarrow \) potassium hydroxide + hydrogen ?
Ask by Chavez Dunn. in the United States
Jan 27,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
Here are the balanced chemical equations:
1. **Bromine + Calcium Iodide → Calcium Bromide + Iodine**
\[
\text{Br}_2 + \text{CaI}_2 \rightarrow \text{CaBr}_2 + \text{I}_2
\]
2. **Zinc Sulfide + Magnesium Arsenate → Zinc Arsenate + Magnesium Sulfide**
\[
3\text{ZnS} + \text{Mg}_3(\text{AsO}_4)_2 \rightarrow \text{Zn}_3(\text{AsO}_4)_2 + 3\text{MgS}
\]
3. **Cobalt + Lead(II) Nitrite → Cobalt(III) Nitrite + Lead**
\[
3\text{Co} + 2\text{Pb(NO}_2)_2 \rightarrow 2\text{Co(NO}_2)_3 + 3\text{Pb}
\]
4. **Potassium + Water → Potassium Hydroxide + Hydrogen**
\[
2\text{K} + 2\text{H}_2\text{O} \rightarrow 2\text{KOH} + \text{H}_2
\]
If you need further assistance or have more questions, feel free to ask!
Solution
It looks like you are presenting chemical reactions and possibly asking for a balanced equation for each. Let's go through each reaction step by step to balance them.
### 1. Bromine + Calcium Iodide → Calcium Bromide + Iodine
**Unbalanced Reaction:**
\[
\text{Br}_2 + \text{CaI}_2 \rightarrow \text{CaBr}_2 + \text{I}_2
\]
**Balancing Steps:**
- On the left, we have 2 Br and 2 I.
- On the right, we have 2 Br and 2 I.
- The equation is already balanced.
**Balanced Equation:**
\[
\text{Br}_2 + \text{CaI}_2 \rightarrow \text{CaBr}_2 + \text{I}_2
\]
### 2. Zinc Sulfide + Magnesium Arsenate → Zinc Arsenate + Magnesium Sulfide
**Unbalanced Reaction:**
\[
\text{ZnS} + \text{Mg}_3(\text{AsO}_4)_2 \rightarrow \text{Zn}_3(\text{AsO}_4)_2 + \text{MgS}
\]
**Balancing Steps:**
- Count the number of each atom on both sides.
- Adjust coefficients to balance the number of atoms.
**Balanced Equation:**
\[
3\text{ZnS} + \text{Mg}_3(\text{AsO}_4)_2 \rightarrow \text{Zn}_3(\text{AsO}_4)_2 + 3\text{MgS}
\]
### 3. Cobalt + Lead(II) Nitrite → Cobalt(III) Nitrite + Lead
**Unbalanced Reaction:**
\[
\text{Co} + \text{Pb(NO}_2)_2 \rightarrow \text{Co(NO}_2)_3 + \text{Pb}
\]
**Balancing Steps:**
- Count the number of each atom on both sides.
- Adjust coefficients to balance the number of atoms.
**Balanced Equation:**
\[
3\text{Co} + 2\text{Pb(NO}_2)_2 \rightarrow 2\text{Co(NO}_2)_3 + 3\text{Pb}
\]
### 4. Potassium + Water → Potassium Hydroxide + Hydrogen
**Unbalanced Reaction:**
\[
\text{K} + \text{H}_2\text{O} \rightarrow \text{KOH} + \text{H}_2
\]
**Balancing Steps:**
- Count the number of each atom on both sides.
- Adjust coefficients to balance the number of atoms.
**Balanced Equation:**
\[
2\text{K} + 2\text{H}_2\text{O} \rightarrow 2\text{KOH} + \text{H}_2
\]
### Summary of Balanced Equations:
1. \(\text{Br}_2 + \text{CaI}_2 \rightarrow \text{CaBr}_2 + \text{I}_2\)
2. \(3\text{ZnS} + \text{Mg}_3(\text{AsO}_4)_2 \rightarrow \text{Zn}_3(\text{AsO}_4)_2 + 3\text{MgS}\)
3. \(3\text{Co} + 2\text{Pb(NO}_2)_2 \rightarrow 2\text{Co(NO}_2)_3 + 3\text{Pb}\)
4. \(2\text{K} + 2\text{H}_2\text{O} \rightarrow 2\text{KOH} + \text{H}_2\)
If you have any further questions or need additional assistance, feel free to ask!
Reviewed and approved by the UpStudy tutoring team
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Simplify this solution Bonus Knowledge
Did you know that bromine is unique among the halogens because it’s a liquid at room temperature? Its reactivity allows it to easily form compounds like calcium bromide, showcasing the fascinating interactions between elements on the periodic table! And let's not forget iodine, which has been a crucial element in fisheries and health, spotlighting how chemistry connects to everyday life. In the exciting world of chemical reactions, balancing equations is key! A common mistake is neglecting to check the conservation of mass, where the number of atoms on the reactant side must equal the product side. When practicing, always remember to double-check your coefficients; it can turn that “oops” moment into a “yes!” moment in no time!
