Question

1. provide the correct formula for the following compounds: note: in compounds where charges must be balanced, you are required to show all of your work - i.e., bubble method!) a) carbon tetrachloride compound formula: __________ b) magnesium carbonate compound formula: ________ c) vanadium(ii) phosphate compound formula: ________ d) aluminum oxide compound formula: ________ e) hydrobromic acid compound formula: __________

Explanation:

Step1: Determine elements and ratios for carbon tetrachloride

Carbon (C) has 1 atom and chlorine (Cl) has 4 atoms in carbon tetrachloride.
$CCl_4$

Step2: Determine ions for magnesium carbonate

Magnesium ion ($Mg^{2 + }$) and carbonate ion ($CO_3^{2 - }$). Charge - balance gives 1:1 ratio.
$MgCO_3$

Step3: Determine ions for vanadium(II) phosphate

Vanadium(II) ion ($V^{2+}$) and phosphate ion ($PO_4^{3 - }$). Cross - multiply charges to get ratio.
$V_3(PO_4)_2$

Step4: Determine ions for aluminum oxide

Aluminum ion ($Al^{3+}$) and oxide ion ($O^{2 - }$). Cross - multiply charges for ratio.
$Al_2O_3$

Step5: Determine elements for hydrobromic acid

Hydrogen (H) and bromine (Br) in a 1:1 ratio.
$HBr$

Answer:

a) $CCl_4$
b) $MgCO_3$
c) $V_3(PO_4)_2$
d) $Al_2O_3$
e) $HBr$