Problem3 For each of the compounds listed below, answer the following questions

Question

Problem3 For each of the compounds listed below, answer the following questions and give the name of the compound. . Is it an ionic compound, a molecular compound, or an acid? . If ionic, Does it contain any main group metals (or metals that form only one type of cation)? - Does it contain any transition metals (or metals that form more than one cation)? If yes, what is the charge of the cation? If yes, are they the cation or anion? If yes, how many water molecules are there? - Does it contain any polyatomic ions? - Is the compound hydrated? (Does it contain water molecules?) . If molecular, - What is the first element? How many atoms of the first element are in the compound? - What is the second element? How many atoms of the second element are in the compound? . If an acid, - Is it a binary acid (composed of H and another element? - Is it an oxyacid (composed of H and an oxyanion)? If yes, does the oxyanion end with -ate or -ite? a. CO b. K2CO3 2H20 c. HNO2 d. XeOs e. P2Ss f. HCIO 8 NH,CN h. SnCl4

Explanation / Answer

a. CO is a molecular compound, and its name is carbon monoxide.

Reason: It contains only non-metals.

b. K2CO3.2H2O is an ionic compound, and its name is potassium carbonate dihydrate

Reason: It contains potassium metal (main group metal) as well as a polyatomic ion (CO32-) and 3 water molecules.

c. HNO2 is an acid, and its name is nitrous acid.

Reason: It's an oxy acid composed of H and an oxyanion, i.e. NO2-

d. XeO3 is a molecular compound, and its name is xenon trioxide.

Reason: It contains only non-metals.

e. P2S5 is a molecular compound, and its name is phosphorus pentasulfide.

Reason: It contains only non-metals.

f. HClO4 is an acid, and its name is perchloric acid.

Reason: It's an oxy acid composed of H and an oxyanion, i.e. ClO4-

g. NH4CN is an ionic compound, and its name is ammonium cyanide.

Reason: It contains two polyatomic ions (NH4+ and CN-).

h. SnCl4 is an ionic compound, and its name is tin tetrachloride.

Reason: It contains tin metal (main group metal) as well as four nonmetals (Cl).

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