객관식
Which of the following is the correct chemical formula for aluminum perbromate?
128
views
3. Chemical Reactions
Naming Ionic Compounds
객관식
Which of the following is the correct chemical formula for the ionic compound formed between iron(III) (Fe^{3+}) and chloride (Cl^{-}) ions?
A
Fe_2Cl_3
B
Fe_3Cl
C
FeCl_2
D
FeCl_3
검증된 단계별 안내1
Identify the charges of the ions involved: iron(III) ion has a charge of +3 (Fe^{3+}) and chloride ion has a charge of -1 (Cl^{-}).
Determine the ratio of ions needed to balance the total positive and negative charges so that the compound is electrically neutral.
Set up the charge balance equation: the total positive charge from iron ions must equal the total negative charge from chloride ions. This can be expressed as 3x = 1y, where x is the number of Fe^{3+} ions and y is the number of Cl^{-} ions.
Find the smallest whole number ratio of Fe^{3+} to Cl^{-} ions that satisfies the charge balance. Since Fe^{3+} has a +3 charge and Cl^{-} has a -1 charge, three chloride ions are needed to balance one iron(III) ion.
Write the chemical formula using the ratio found: one Fe^{3+} ion combined with three Cl^{-} ions gives the formula FeCl_3.
관련 영상
관련 실천
