Use the following acid dissociation constants to identify the correct decreasing order of acid strengths. HF Ka = 7.2 × 10–4 HNO2 Ka = 4.5 × 10–4 HCN Ka = 6.2 × 10–10 A B C D HF > HNO2 > HCN HCN > HNO2 > HF HNO2 > HF > HCN HCN > HF > HNO2 1. A 2. B 3. C 4. D
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Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
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Use the following acid dissociation constants to identify the correct decreasing order of acid strengths.
HF Ka = 7.2 × 10–4
HNO2 Ka = 4.5 × 10–4
HCN Ka = 6.2 × 10–10
| A | B | C | D |
| HF > HNO2 > HCN | HCN > HNO2 > HF | HNO2 > HF > HCN | HCN > HF > HNO2 |
1. A
2. B
3. C
4. D
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