Jacks practice quiz

How many oxygen atoms are symbolized by the notation in the box: 2Mg₃(PO₄)₂

• 4

• 10

• 16

• 18

Which of the following is a strong electrolyte?

• NH₃

• HOH

• HCI

• CH₃OH

Which of the following mixtures will produce a precipitate?

• Fe(NO₃)₂(aq) and KI(aq)

• LiNO₃(aq) and (NH₄₎₂S(aq)

• Pb(CH₃CO₂)₂(aq) and K₂SO₄(aq)

• K₂CO₃(aq) and NH₄I(aq)

What is the oxidation number of manganese in the permanganate ion, MnO4^-?

• +7

• +1

• +8

• +6

What does 10 M HBr(aq) mean?

• 10 mL of HBr react with 1 L H₂O

• 10 mol HBr

• 10 mol HBr per liter of solution

• 10 m HBr per mol HBr

What is the chemistry definition of an electrolyte?

• a substance that produces ions in aqueous solution

• any solid that is only soluble upon application of an electrical potential

• any chemical found in human perspiration

• any material that conducts electricity in the solid form

Which of the following is a Bronsted-Lowry acid-base reaction?

• Mg(s) + 2HCI(aq) -> MgCl₂ + H₂(g)

• Fe(NO₃)₂(aq) + 2 KOH(aq) -> Fe(OH)₂(aq) + 2 KNO₃(aq)

• C₆H₅COOH(aq) + NaOH(aq) -> C₆H₅COONa(aq) + H₂O(l)

• 2 AgNO₃(aq) + Na₂CO₃(aq) + 2 NaNO₃(aq) -> Ag₂CO₃(s) + 2NaNO₃(aq)

Oxidation is defined as___________.

• the addition of electrons to a species

• the removal of electrons from a species

• the addition of hydrogen atoms to a compound

• the removal of protons from a compound

What of the following is a strong acid?

• HNO₃

• KOH

• HCN

• CH₃COOH

When the redox element is balanced and oxygen does not balance in an acidic, aqueous, redox half-reaction, what species must be added to the side of the reaction equation with less oxygen?

• NHO₃

• HO^-

• H₂0

• O₂