### Arranging Solutions by pH**Assuming equal concentrations, arrange these solutions by pH, from highest to lowest.**#### Solutions List- **HCN(aq)**- **HI(aq)**- **NH₃(aq)**- **Sr(OH)₂(aq)**- **RbOH(aq)**For a better understanding of how to arrange these solutions by pH, consider the following points:1. **RbOH (Rubidium Hydroxide)**: A strong base which should have the highest pH.2. **Sr(OH)₂ (Strontium Hydroxide)**: Another strong base, which also results in a high pH, but slightly lower than RbOH because alkali metal hydroxides are generally stronger.3. **NH₃ (Ammonia)**: A weak base, resulting in a moderately high pH.4. **HCN (Hydrogen Cyanide)**: A weak acid, resulting in a slightly acidic pH.5. **HI (Hydroiodic Acid)**: A strong acid, which should have the lowest pH.### Answer BankThe rank from highest to lowest pH will look like this:1. **RbOH(aq)**2. **Sr(OH)₂(aq)**3. **NH₃(aq)**4. **HCN(aq)**5. **HI(aq)**

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of 45 > Assuming equal concentrations, arrange these solutions by pH. Highest pH HCN(aq) HI(aq) NH,(aq) Sr(OH)₂ (aq) RbOH(aq) Lowest pH Answer Bank

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

### Arranging Solutions by pH

**Assuming equal concentrations, arrange these solutions by pH, from highest to lowest.**

#### Solutions List
- **HCN(aq)**
- **HI(aq)**
- **NH₃(aq)**
- **Sr(OH)₂(aq)**
- **RbOH(aq)**

For a better understanding of how to arrange these solutions by pH, consider the following points:

1. **RbOH (Rubidium Hydroxide)**: A strong base which should have the highest pH.
2. **Sr(OH)₂ (Strontium Hydroxide)**: Another strong base, which also results in a high pH, but slightly lower than RbOH because alkali metal hydroxides are generally stronger.
3. **NH₃ (Ammonia)**: A weak base, resulting in a moderately high pH.
4. **HCN (Hydrogen Cyanide)**: A weak acid, resulting in a slightly acidic pH.
5. **HI (Hydroiodic Acid)**: A strong acid, which should have the lowest pH.

### Answer Bank
The rank from highest to lowest pH will look like this:

1. **RbOH(aq)**
2. **Sr(OH)₂(aq)**
3. **NH₃(aq)**
4. **HCN(aq)**
5. **HI(aq)**

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