Question

complete the following covalent compound names and use two decimals to calculate the molar mass.
example
ccl₄
name: carbon tetrachloride
n₂o₃
name:
clo₂
name:
sf₆
name:
co₂
name:

Explanation:

Step1: Naming of \(N_2O_3\)

• For covalent compounds, prefixes are used to denote the number of atoms.
• Here, there are 2 nitrogen atoms (prefix 'di - ') and 3 oxygen atoms (prefix 'tri - ').
• So, the name is dinitrogen trioxide.

Step2: Molar mass calculation of \(N_2O_3\)

• Molar mass of \(N = 14.00\space g/mol\), and there are 2 N atoms: \(14.00\space g/mol\times2=28.00\space g/mol\)
• Molar mass of \(O = 16.00\space g/mol\), and there are 3 O atoms: \(16.00\space g/mol\times3 = 48.00\space g/mol\)
• Total molar mass: \(28.00\space g/mol+48.00\space g/mol = 76.00\space g/mol\)

Step3: Naming of \(ClO_2\)

• There is 1 chlorine atom (no prefix as 'mono -'is not used for the first element usually) and 2 oxygen atoms (prefix 'di - ').
• So, the name is chlorine dioxide.

Step4: Molar mass calculation of \(ClO_2\)

• Molar mass of \(Cl = 35.45\space g/mol\)
• Molar mass of \(O = 16.00\space g/mol\), and there are 2 O atoms: \(16.00\space g/mol\times2=32.00\space g/mol\)
• Total molar mass: \(35.45\space g/mol + 32.00\space g/mol=67.45\space g/mol\)

Step5: Naming of \(SF_6\)

• There is 1 sulfur atom (no prefix) and 6 fluorine atoms (prefix 'hexa - ').
• So, the name is sulfur hexafluoride.

Step6: Molar mass calculation of \(SF_6\)

• Molar mass of \(S = 32.06\space g/mol\)
• Molar mass of \(F = 19.00\space g/mol\), and there are 6 F atoms: \(19.00\space g/mol\times6 = 114.00\space g/mol\)
• Total molar mass: \(32.06\space g/mol+114.00\space g/mol = 146.06\space g/mol\)

Step7: Naming of \(CO_2\)

• There is 1 carbon atom (no prefix) and 2 oxygen atoms (prefix 'di - ').
• So, the name is carbon dioxide.

Step8: Molar mass calculation of \(CO_2\)

• Molar mass of \(C = 12.01\space g/mol\)
• Molar mass of \(O = 16.00\space g/mol\), and there are 2 O atoms: \(16.00\space g/mol\times2=32.00\space g/mol\)
• Total molar mass: \(12.01\space g/mol+32.00\space g/mol=44.01\space g/mol\)

Answer:

• For \(N_2O_3\): Name - dinitrogen trioxide, Molar mass - \(76.00\space g/mol\)
• For \(ClO_2\): Name - chlorine dioxide, Molar mass - \(67.45\space g/mol\)
• For \(SF_6\): Name - sulfur hexafluoride, Molar mass - \(146.06\space g/mol\)
• For \(CO_2\): Name - carbon dioxide, Molar mass - \(44.01\space g/mol\)