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The number of weak electrolytes among th...

The number of weak electrolytes among the following is
`CH_(3)CO O Na, H_(2)CO_(3),
HCO O H,
C_(2)H_(5)HN_(2),
Na_(2)CO_(3),
Ca(OH)_(2),
CH_(3)CO ONH_(4),
HNO_(2),
HI and HF`.

Text Solution

AI Generated Solution

The correct Answer is:
To determine the number of weak electrolytes among the given compounds, we need to classify each compound as either a strong electrolyte or a weak electrolyte. Here's how we can do that step by step: ### Step 1: Understand the definitions - **Strong Electrolytes**: These are substances that completely dissociate into ions when dissolved in water. Examples include strong acids, strong bases, and soluble salts. - **Weak Electrolytes**: These substances only partially dissociate into ions in solution. Examples include weak acids and weak bases. ### Step 2: Analyze each compound 1. **CH₃COONa (Sodium Acetate)**: This is a salt formed from a strong base (NaOH) and a weak acid (acetic acid). It is considered a strong electrolyte because it completely dissociates in solution. 2. **H₂CO₃ (Carbonic Acid)**: This is a weak acid and only partially dissociates in water, making it a weak electrolyte. 3. **HCOOH (Formic Acid)**: This is also a weak acid and partially dissociates in water, so it is a weak electrolyte. 4. **C₂H₅NH₂ (Ethylamine)**: This is a weak base and does not completely dissociate in water, classifying it as a weak electrolyte. 5. **Na₂CO₃ (Sodium Carbonate)**: This salt completely dissociates in water, thus it is a strong electrolyte. 6. **Ca(OH)₂ (Calcium Hydroxide)**: Although it is a base, it is considered a strong electrolyte because it dissociates significantly in water. 7. **CH₃COONH₄ (Ammonium Acetate)**: This salt dissociates completely in water, making it a strong electrolyte. 8. **HNO₂ (Nitrous Acid)**: This is a weak acid and partially dissociates in water, so it is a weak electrolyte. 9. **HI (Hydroiodic Acid)**: This is a strong acid and completely dissociates in water, classifying it as a strong electrolyte. 10. **HF (Hydrofluoric Acid)**: This is a weak acid and only partially dissociates in water, making it a weak electrolyte. ### Step 3: Count the weak electrolytes From the analysis: - Weak electrolytes: H₂CO₃, HCOOH, C₂H₅NH₂, HNO₂, HF - Total weak electrolytes = 5 ### Final Answer The number of weak electrolytes among the given compounds is **5**. ---
To determine the number of weak electrolytes among the given compounds, we need to classify each compound as either a strong electrolyte or a weak electrolyte. Here's how we can do that step by step: ### Step 1: Understand the definitions - **Strong Electrolytes**: These are substances that completely dissociate into ions when dissolved in water. Examples include strong acids, strong bases, and soluble salts. - **Weak Electrolytes**: These substances only partially dissociate into ions in solution. Examples include weak acids and weak bases. ### Step 2: Analyze each compound 1. **CH₃COONa (Sodium Acetate)**: This is a salt formed from a strong base (NaOH) and a weak acid (acetic acid). It is considered a strong electrolyte because it completely dissociates in solution. ...
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Knowledge Check

  • Na_(2) CO_(3). 10 H_(2) O is

    A
    Washing soda
    B
    Baking soda
    C
    Bleaching powder
    D
    Slaked lime

  • The decreasing order of nucleophilicity for the folllwing anions is CH_(3)CO_(2)^(-), CH_(3)O^(-), C_(6)H_(5)O^(-), NO_(3)

    A
    `CH_(3)CO_(2)^(-)gt CH_(3)O^(-)gt C_(6)H_(5)O^(-) gt NO_(3)^(-)`
    B
    `CH_(3)O^(-) gt NO_(3)^(-) gt C_(6)H_(5)O^(-)gt CH_(3)CO_(2)^(-)`
    C
    `CH_(3)O^(-) gt C_(6)H_(5)O^(-) gt CH_(3)CO_(2)^(-) gt NO_(3)^(-)`
    D
    `C_(6)H_(5)O^(-) gt CH_(3)O^(-) gt NO_(3)^(-) gt CH_(3)CO_(2)^(-)`

  • The product X in the following reaction is (CH_(3)CO)_(2)O+C_(2)H_(5)OH to CH_(3)COOH+X

    A
    `C_(2)H_(5)COOH`
    B
    `CH_(3)COOCH_(3)`
    C
    `CH_(3)COOC_(2)H_(5)`
    D
    `CH_(3)COCH_(3)`