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Chapter 3: Problem 61

Write formulas for the compounds: (a) aluminum sulfate; (b) ammonium dichromate; (c) silicon tetrafluoride; (d) iron(III) oxide; (e) tricarbon disulfide; (f) cobalt(II) nitrate; (g) strontium nitrite; (h) hydrobromic acid; (i) iodic acid; (j) phosphorus dichloride trifluoride.

Short Answer

Expert verified
(a) \( Al_2(SO_4)_3 \); (b) \( (NH_4)_2Cr_2O_7 \); (c) \( SiF_4 \); (d) \( Fe_2O_3 \); (e) \( C_3S_2 \); (f) \( Co(NO_3)_2 \); (g) \( Sr(NO_2)_2 \); (h) \( HBr \); (i) \( HIO_3 \); (j) \( PCl_2F_3 \)

Step by step solution

01

Writing Formulas for compounds with metallic and nonmetallic ions

Locate the position of the element in the periodic table, determine the charge, and then use the reverse of the rules for writing the name of an ionic compound from its formula to get: (a) aluminum sulfate becomes \( Al_2(SO_4)_3 \); (b) ammonium dichromate turns into \( (NH_4)_2Cr_2O_7 \); (d) iron(III) oxide turns into \( Fe_2O_3 \); (f) cobalt(II) nitrate transforms into \( Co(NO_3)_2 \); (g) strontium nitrite converts to \( Sr(NO_2)_2 \).
02

Writing Formulas for binary molecular compounds

Apply the rules for naming binary molecular compounds reversed. In this way: (c) silicon tetrafluoride becomes \( SiF_4 \); (e) tricarbon disulfide turns into \( C_3S_2 \); (j) phosphorus dichloride trifluoride becomes \( PCl_2F_3 \).
03

Writing Formulas for acids

For acids, recognize the name of the anion appended with -ic and prepend with hydro- if it's a binary acid. Hence, (h) hydrobromic acid becomes \( HBr \); (i) iodic acid turns into \( HIO_3 \).

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