Bronsted Lowry Acid Base Worksheet - Fill Online, Printable ... - Free Printable
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Step-by-step solution for: Bronsted Lowry Acid Base Worksheet - Fill Online, Printable ...
Absolutely! Let’s solve this step by step.
---
- An acid is a proton (H⁺) donor.
- A base is a proton (H⁺) acceptor.
- When an acid donates a proton, it becomes its conjugate base.
- When a base accepts a proton, it becomes its conjugate acid.
So for any reaction:
Acid₁ + Base₂ ⇌ Conjugate Base₁ + Conjugate Acid₂
We need to identify:
- Which species donated H⁺ → that’s the acid.
- Which species accepted H⁺ → that’s the base.
- The product formed from the acid → conjugate base.
- The product formed from the base → conjugate acid.
---
Let’s go through each reaction:
---
- HCO₃⁻ loses H⁺ → becomes CO₃²⁻ → so HCO₃⁻ is the acid, CO₃²⁻ is its conjugate base.
- NH₃ gains H⁺ → becomes NH₄⁺ → so NH₃ is the base, NH₄⁺ is its conjugate acid.
✔ Answer:
Acid: HCO₃⁻
Base: NH₃
Conjugate Base: CO₃²⁻
Conjugate Acid: NH₄⁺
---
- HCl donates H⁺ → becomes Cl⁻ → HCl = acid, Cl⁻ = conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → H₂O = base, H₃O⁺ = conjugate acid.
✔ Answer:
Acid: HCl
Base: H₂O
Conjugate Base: Cl⁻
Conjugate Acid: H₃O⁺
---
- CH₃COOH donates H⁺ → becomes CH₃COO⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: CH₃COOH
Base: H₂O
Conjugate Base: CH₃COO⁻
Conjugate Acid: H₃O⁺
---
- HOCl donates H⁺ → becomes ClO⁻ → acid → conjugate base.
- NH₃ accepts H⁺ → becomes NH₄⁺ → base → conjugate acid.
✔ Answer:
Acid: HOCl
Base: NH₃
Conjugate Base: ClO⁻
Conjugate Acid: NH₄⁺
---
- H₂SO₄ donates H⁺ → becomes HSO₄⁻ → acid → conjugate base.
- OH⁻ accepts H⁺ → becomes H₂O → base → conjugate acid.
✔ Answer:
Acid: H₂SO₄
Base: OH⁻
Conjugate Base: HSO₄⁻
Conjugate Acid: H₂O
---
- H₂SO₄ donates H⁺ → becomes HSO₄⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂SO₄
Base: H₂O
Conjugate Base: HSO₄⁻
Conjugate Acid: H₃O⁺
---
- H₂O donates H⁺ → becomes OH⁻ → so H₂O = acid, OH⁻ = conjugate base.
- CO₃²⁻ accepts H⁺ → becomes HCO₃⁻ → so CO₃²⁻ = base, HCO₃⁻ = conjugate acid.
✔ Answer:
Acid: H₂O
Base: CO₃²⁻
Conjugate Base: OH⁻
Conjugate Acid: HCO₃⁻
---
- NH₄⁺ donates H⁺ → becomes NH₃ → acid → conjugate base.
- OH⁻ accepts H⁺ → becomes H₂O → base → conjugate acid.
✔ Answer:
Acid: NH₄⁺
Base: OH⁻
Conjugate Base: NH₃
Conjugate Acid: H₂O
---
- HCOOH donates H⁺ → becomes HCOO⁻ → acid → conjugate base.
- CH₃COO⁻ accepts H⁺ → becomes CH₃COOH → base → conjugate acid.
✔ Answer:
Acid: HCOOH
Base: CH₃COO⁻
Conjugate Base: HCOO⁻
Conjugate Acid: CH₃COOH
---
- HCN donates H⁺ → becomes CN⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: HCN
Base: H₂O
Conjugate Base: CN⁻
Conjugate Acid: H₃O⁺
---
- H₂O donates H⁺ → becomes OH⁻ → acid → conjugate base.
- C₆H₅NH₂ (aniline) accepts H⁺ → becomes C₆H₅NH₃⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂O
Base: C₆H₅NH₂
Conjugate Base: OH⁻
Conjugate Acid: C₆H₅NH₃⁺
---
This is autoionization of water.
- One H₂O molecule donates H⁺ → becomes OH⁻ → acid → conjugate base.
- Another H₂O molecule accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂O (first one)
Base: H₂O (second one)
Conjugate Base: OH⁻
Conjugate Acid: H₃O⁺
---
- HSO₄⁻ donates H⁺ → becomes SO₄²⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: HSO₄⁻
Base: H₂O
Conjugate Base: SO₄²⁻
Conjugate Acid: H₃O⁺
---
- H₃O⁺ donates H⁺ → becomes H₂O → acid → conjugate base.
- OH⁻ accepts H⁺ → becomes H₂O → base → conjugate acid.
✔ Answer:
Acid: H₃O⁺
Base: OH⁻
Conjugate Base: H₂O
Conjugate Acid: H₂O
*(Note: both products are H₂O — same species, but one came from acid, one from base.)*
---
- H₂O donates H⁺ → becomes OH⁻ → acid → conjugate base.
- NH₃ accepts H⁺ → becomes NH₄⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂O
Base: NH₃
Conjugate Base: OH⁻
Conjugate Acid: NH₄⁺
---
## ✔ Final Summary Table (for quick reference):
| Reaction | Acid | Base | Conjugate Base | Conjugate Acid |
|----------|------------|------------|----------------|----------------|
| 1 | HCO₃⁻ | NH₃ | CO₃²⁻ | NH₄⁺ |
| 2 | HCl | H₂O | Cl⁻ | H₃O⁺ |
| 3 | CH₃COOH | H₂O | CH₃COO⁻ | H₃O⁺ |
| 4 | HOCl | NH₃ | ClO⁻ | NH₄⁺ |
| 5 | H₂SO₄ | OH⁻ | HSO₄⁻ | H₂O |
| 6 | H₂SO₄ | H₂O | HSO₄⁻ | H₃O⁺ |
| 7 | H₂O | CO₃²⁻ | OH⁻ | HCO₃⁻ |
| 8 | NH₄⁺ | OH⁻ | NH₃ | H₂O |
| 9 | HCOOH | CH₃COO⁻ | HCOO⁻ | CH₃COOH |
| 10 | HCN | H₂O | CN⁻ | H₃O⁺ |
| 11 | H₂O | C₆H₅NH₂ | OH⁻ | C₆H₅NH₃⁺ |
| 12 | H₂O | H₂O | OH⁻ | H₃O⁺ |
| 13 | HSO₄⁻ | H₂O | SO₄²⁻ | H₃O⁺ |
| 14 | H₃O⁺ | OH⁻ | H₂O | H₂O |
| 15 | H₂O | NH₃ | OH⁻ | NH₄⁺ |
---
You can now fill in your worksheet with these answers! Let me know if you want this formatted as a printable answer key. 😊
---
🔬 Bronsted-Lowry Acid-Base Theory Recap:
- An acid is a proton (H⁺) donor.
- A base is a proton (H⁺) acceptor.
- When an acid donates a proton, it becomes its conjugate base.
- When a base accepts a proton, it becomes its conjugate acid.
So for any reaction:
Acid₁ + Base₂ ⇌ Conjugate Base₁ + Conjugate Acid₂
We need to identify:
- Which species donated H⁺ → that’s the acid.
- Which species accepted H⁺ → that’s the base.
- The product formed from the acid → conjugate base.
- The product formed from the base → conjugate acid.
---
Let’s go through each reaction:
---
1. HCO₃⁻ + NH₃ → CO₃²⁻ + NH₄⁺
- HCO₃⁻ loses H⁺ → becomes CO₃²⁻ → so HCO₃⁻ is the acid, CO₃²⁻ is its conjugate base.
- NH₃ gains H⁺ → becomes NH₄⁺ → so NH₃ is the base, NH₄⁺ is its conjugate acid.
✔ Answer:
Acid: HCO₃⁻
Base: NH₃
Conjugate Base: CO₃²⁻
Conjugate Acid: NH₄⁺
---
2. HCl + H₂O → H₃O⁺ + Cl⁻
- HCl donates H⁺ → becomes Cl⁻ → HCl = acid, Cl⁻ = conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → H₂O = base, H₃O⁺ = conjugate acid.
✔ Answer:
Acid: HCl
Base: H₂O
Conjugate Base: Cl⁻
Conjugate Acid: H₃O⁺
---
3. CH₃COOH + H₂O → H₃O⁺ + CH₃COO⁻
- CH₃COOH donates H⁺ → becomes CH₃COO⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: CH₃COOH
Base: H₂O
Conjugate Base: CH₃COO⁻
Conjugate Acid: H₃O⁺
---
4. HOCl + NH₃ → NH₄⁺ + ClO⁻
- HOCl donates H⁺ → becomes ClO⁻ → acid → conjugate base.
- NH₃ accepts H⁺ → becomes NH₄⁺ → base → conjugate acid.
✔ Answer:
Acid: HOCl
Base: NH₃
Conjugate Base: ClO⁻
Conjugate Acid: NH₄⁺
---
5. H₂SO₄ + OH⁻ → HSO₄⁻ + H₂O
- H₂SO₄ donates H⁺ → becomes HSO₄⁻ → acid → conjugate base.
- OH⁻ accepts H⁺ → becomes H₂O → base → conjugate acid.
✔ Answer:
Acid: H₂SO₄
Base: OH⁻
Conjugate Base: HSO₄⁻
Conjugate Acid: H₂O
---
6. H₂SO₄ + H₂O → H₃O⁺ + HSO₄⁻
- H₂SO₄ donates H⁺ → becomes HSO₄⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂SO₄
Base: H₂O
Conjugate Base: HSO₄⁻
Conjugate Acid: H₃O⁺
---
7. CO₃²⁻ + H₂O → HCO₃⁻ + OH⁻
- H₂O donates H⁺ → becomes OH⁻ → so H₂O = acid, OH⁻ = conjugate base.
- CO₃²⁻ accepts H⁺ → becomes HCO₃⁻ → so CO₃²⁻ = base, HCO₃⁻ = conjugate acid.
✔ Answer:
Acid: H₂O
Base: CO₃²⁻
Conjugate Base: OH⁻
Conjugate Acid: HCO₃⁻
---
8. NH₄⁺ + OH⁻ → NH₃ + H₂O
- NH₄⁺ donates H⁺ → becomes NH₃ → acid → conjugate base.
- OH⁻ accepts H⁺ → becomes H₂O → base → conjugate acid.
✔ Answer:
Acid: NH₄⁺
Base: OH⁻
Conjugate Base: NH₃
Conjugate Acid: H₂O
---
9. HCOOH + CH₃COO⁻ → HCOO⁻ + CH₃COOH
- HCOOH donates H⁺ → becomes HCOO⁻ → acid → conjugate base.
- CH₃COO⁻ accepts H⁺ → becomes CH₃COOH → base → conjugate acid.
✔ Answer:
Acid: HCOOH
Base: CH₃COO⁻
Conjugate Base: HCOO⁻
Conjugate Acid: CH₃COOH
---
10. HCN + H₂O → CN⁻ + H₃O⁺
- HCN donates H⁺ → becomes CN⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: HCN
Base: H₂O
Conjugate Base: CN⁻
Conjugate Acid: H₃O⁺
---
11. C₆H₅NH₂ + H₂O → C₆H₅NH₃⁺ + OH⁻
- H₂O donates H⁺ → becomes OH⁻ → acid → conjugate base.
- C₆H₅NH₂ (aniline) accepts H⁺ → becomes C₆H₅NH₃⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂O
Base: C₆H₅NH₂
Conjugate Base: OH⁻
Conjugate Acid: C₆H₅NH₃⁺
---
12. H₂O + H₂O → H₃O⁺ + OH⁻
This is autoionization of water.
- One H₂O molecule donates H⁺ → becomes OH⁻ → acid → conjugate base.
- Another H₂O molecule accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂O (first one)
Base: H₂O (second one)
Conjugate Base: OH⁻
Conjugate Acid: H₃O⁺
---
13. HSO₄⁻ + H₂O → SO₄²⁻ + H₃O⁺
- HSO₄⁻ donates H⁺ → becomes SO₄²⁻ → acid → conjugate base.
- H₂O accepts H⁺ → becomes H₃O⁺ → base → conjugate acid.
✔ Answer:
Acid: HSO₄⁻
Base: H₂O
Conjugate Base: SO₄²⁻
Conjugate Acid: H₃O⁺
---
14. OH⁻ + H₃O⁺ → H₂O + H₂O
- H₃O⁺ donates H⁺ → becomes H₂O → acid → conjugate base.
- OH⁻ accepts H⁺ → becomes H₂O → base → conjugate acid.
✔ Answer:
Acid: H₃O⁺
Base: OH⁻
Conjugate Base: H₂O
Conjugate Acid: H₂O
*(Note: both products are H₂O — same species, but one came from acid, one from base.)*
---
15. NH₃ + H₂O → NH₄⁺ + OH⁻
- H₂O donates H⁺ → becomes OH⁻ → acid → conjugate base.
- NH₃ accepts H⁺ → becomes NH₄⁺ → base → conjugate acid.
✔ Answer:
Acid: H₂O
Base: NH₃
Conjugate Base: OH⁻
Conjugate Acid: NH₄⁺
---
## ✔ Final Summary Table (for quick reference):
| Reaction | Acid | Base | Conjugate Base | Conjugate Acid |
|----------|------------|------------|----------------|----------------|
| 1 | HCO₃⁻ | NH₃ | CO₃²⁻ | NH₄⁺ |
| 2 | HCl | H₂O | Cl⁻ | H₃O⁺ |
| 3 | CH₃COOH | H₂O | CH₃COO⁻ | H₃O⁺ |
| 4 | HOCl | NH₃ | ClO⁻ | NH₄⁺ |
| 5 | H₂SO₄ | OH⁻ | HSO₄⁻ | H₂O |
| 6 | H₂SO₄ | H₂O | HSO₄⁻ | H₃O⁺ |
| 7 | H₂O | CO₃²⁻ | OH⁻ | HCO₃⁻ |
| 8 | NH₄⁺ | OH⁻ | NH₃ | H₂O |
| 9 | HCOOH | CH₃COO⁻ | HCOO⁻ | CH₃COOH |
| 10 | HCN | H₂O | CN⁻ | H₃O⁺ |
| 11 | H₂O | C₆H₅NH₂ | OH⁻ | C₆H₅NH₃⁺ |
| 12 | H₂O | H₂O | OH⁻ | H₃O⁺ |
| 13 | HSO₄⁻ | H₂O | SO₄²⁻ | H₃O⁺ |
| 14 | H₃O⁺ | OH⁻ | H₂O | H₂O |
| 15 | H₂O | NH₃ | OH⁻ | NH₄⁺ |
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You can now fill in your worksheet with these answers! Let me know if you want this formatted as a printable answer key. 😊
Parent Tip: Review the logic above to help your child master the concept of arrhenius acid base worksheet.
