5.1 Notes Examples

Is HCl binary or polyatomic?

• binary (2 elements)

• polyatomic (3+ elements)

Answer explanation

HCl only has 2 elements

H = hydrogen

Cl = chlorine

What is the name of HCl?

• chloric acid

• hydrogen chloride acid

• chlorous acid

• hydrochloric acid

Answer explanation

HCl only has 2 elements

H = hydrogen

Cl = chlorine

Binary acids are named using hydro-(STEM)-ic acid

Is H₃PO₄ binary or polyatomic?

• binary (2 elements)

• polyatomic (3+ elements)

Answer explanation

H₃PO₄ is made of 3+ elements

H = hydrogen

P = phosphorous

O = oxygen

H₃PO₄

Does the PA ion end in "-ate" or "-ite"?

• -ate

• -ite

Answer explanation

H₃PO₄ is made of 3+ elements

H = hydrogen

P = phosphorous

O = oxygen

The PA ion is PO₄^-3 which is named phosphate

What is the name of H₃PO₄?

• hydrophosphoric acid

• hydrogen phosphoroxide acid

• phosphoric acid

• phosphorous acid

Answer explanation

H₃PO₄ is made of 3+ elements

H = hydrogen

P = phosphorous

O = oxygen

The PA ion is PO₄^-3 which is named phosphate

"-ate" PA ion changes to

"-ic" acid

Is HI binary or polyatomic?

• binary

• polyatomic

Answer explanation

HI is made of 2 elements

H = hydrogen

I = iodine

What is the name of HI?

• hydrogen iodide acid

• hydroiodic acid

• iodic acid

• iodous acid

Answer explanation

HI is made of 2 elements

H = hydrogen

I = iodine

binary acids are named as

hydro-___-ic acid

Is H₂SO₃ binary or polyatomic?

• binary

• polyatomic

Answer explanation

H₂SO₃ is made of 3+ elements

H = hydrogen

S = sulfur

O = oxygen

H₂SO₃

Does the PA ion end in "-ate" or "-ite"?

• -ate

• "-ite"

Answer explanation

H₂SO₃ is made of 3+ elements

H = hydrogen

S = sulfur

O = oxygen

SO₃^-2 is sulfite - got to look closely at the formulas on the PA ion chart

What is the name of H₂SO₃?

• sulfurous acid

• hydrogen sulfite acid

• sulfuric acid

• hydrosulfuroxide acid

Answer explanation

H₂SO₃ is made of 3+ elements

H = hydrogen

S = sulfur

O = oxygen

SO₃^-2 is sulfite - got to look closely at the formulas on the PA ion chart

"-ite" ions become "-ous" acid