1. Questions

ionic or covalent

can you check for me?

Calcium Chloride: covalent
Citric Acid: ionic
Phenyl Salicylate: covalent
Potassium Iodide: ionic
Sodium Chloride: covalent
Sucrose: ionic

Thanks so much!!!!

You must have some reason for picking ionic or covalent. How did you arrive at your answers? Look at the electronegativity chart. For example, I see a value of 1.00 for Ca and 3.16 for Cl. The difference is 3.16 - 1.00 = 2.16. The general rule is that a range for the difference in EN of 1.7-2.1 represents 50% ionic/50% covalent character. Some profs use 1.7 and some use 2.1 while others use some number in between for the dividing line. Use the number your teacher uses. Anyway, for compounds with greater than 50% ionic character, we usually call them ionic. For less than 2.1 we call them covalent. I would call CaCl2, based on these numbers, ionic. Please rethink and redo your question and repost if you still have a problem.


I have changed my answers i hope they are right can you double check?
Calcium Chloride: ionic
Citric Acid: covalent
Phenyl Salicylate: covalent
Potassium Iodide: covalent
Sodium Chloride: covalent
Sucrose: covalent

Tell us why you chose Covalent for Potassium Iodide

but are the rest right?

No, but these answers are closer than the first set. See the sites suggested by Lance, then write in the electronegativity values and post them, give the difference, and suggest ionic or covalent.

Calcium Chloride: ionic
Citric Acid: covalent
Phenyl Salicylate: covalent
Potassium Iodide: ionic
Sodium Chloride: ionic
Sucrose: covalent

good. There is a way of getting a good handle on this without looking up the EN values. Compounds formed from group I or II metals with group VI or VII non-metals usually are far enough apart in EN to give ionic compounds. So CaCl2 (group II and group VII) we would expect to be ionic. KI (group I and group VII) same thing. NaCl (group I and group VII) same thing. Compounds formed between elements very close to each other or say between the middle of the table and either side (that is between group IV, for example, and group I or group VII) we would expect to be covalent. So CH4 (group IV and I) is covalent. CCl4 (group IV and VII) is covalent. CO, CO2, Cl2, etc are covalent. Citric acid is an organic molecule composed of C, H, and O. Those are close together. Covalent. Phenyl salicylate is composed of C, H, O, as is sucrose (C12H22O11) and they are covalent. I hope this helps.

citric acid is ionic as it releases hydrogen ions and the anion citrate

Calcium Chloride-ionic
Citric acid-ionic
Phenyl Salicylate-covalent
Potassium iodide-Ionic
Sodium Chloride-ionic
Sucrose-Covalent

CaCl-Ionic
KI-Ionic
Sucrose-Covalant
NaCl-Ionic
Citric Acid-Covalant
Phenyl-Salicylate-Covalant

the answers are as follows!!!

Calcium Chloride-Pirate
Citric acid-Wednesday
Phenyl Salicylate-Orange
Potassium iodide-three hundred three
Sodium Chloride-303
Sucrose-.....i didn't get this one, it was too hard.

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Hodgkin

  1. I know that the Sodium Chloride is ionic because Sodium is Positive and Chloride is Negative, and Ionic bonds are formed by the attraction between Postive and Negative atoms.

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    Ross Taylor

  2. neede it for my homework

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    Anita

  4. those n e body now what these are
    benzoic acid
    sucrose
    iodine
    hexene
    graphite

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    mat

  5. Sucrose is dirty like frienly fire in the African jungle in the winter of November 32, 1904 when the chimp attacked Joshua in the feast of Chrisy.
    All are Welcome

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    Juan

  6. i think they are right now

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    Anonymous

  8. to find the number of bananas,you could have reasoned that for eight servings, you,need four bananas.THus for 16 servings,you need 8 bananas, and for 4 servings,you need 2 bananas.Thus, for 20 servings,you need 10 bananas.

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    Brittany

  9. But what about when you have three elements?

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    Anonymous

  10. Citric acid is a moleule with entirely covalent bonds. Covalent componds can dissociate (weakly) into ions in solution, after all water itself dissociates to a small degree.

    Citric acid is an organic acid; it does dissociate (weakly) however the bonds that hold the hydrogens that ionize to the backbone are indeed covalent bonds. They can split fairly easily because of the double-bonded oxygens. When the hrogen leaves the extra electon can resonate between two adjacent oxygens.

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    Dan

  12. i need help too is sodium chloride ionic? and is hydrogen peroxide ionic too???? please help

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    shannon

  13. Is Mg2O covalent or ionic?

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    Purplefreak

  14. is hydrogen peroxide ionic or covalent?

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    fsdfdsf

  16. Sodium Chloride- Ionic
    Calcium Chloride- Ionic
    Potassium Iodide- Ionic

    Citric Acid- Covalent
    Sucrose- Covalent

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    becca

  17. if a metal and a non-metal form a bond, the bond is always ionic. Similarly, when two non-metals form a bond, the bond is covalent.

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    honors chem

  18. sucrose: covalent
    sodiumchloride: ionic
    calcium chloride: ionic
    phenyl salicylate: covalent
    potassium iodide: ionic
    citric acid: covalent

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    dana

  20. sodium chloride: Ionic
    calcuim chloride: Ionic
    citric acid: Ionic
    potassuim iodine covalent
    phenyl salicylate: covalent
    sucrose- covalent

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    doesnt matter

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