Chemistry Ch 14 - acids and bases

True or false: NH4+ and NH3 are considered a conjugate acid-conjugate base pair.

• True

• False

In general, the stronger the acid, the weaker it's conjugate base.

• True

• False

A solution of pH 2 contains ten times more H3O+ than a solution of pH 3. True or false?

• True

• False

True or false: the sour taste of bases warns humans against eating poisonous alkaloids found in some plants.

• True

• False

Which of the following is NOT a property of acids?

• acids have slippery feel

• acids dissolve many metals

• acids have a sour taste

• acids turn litmus paper red

Which of the following statements about a base is TRUE?

1. Bases are used in manufacturing soap.

2. Bases have a sour taste

3. Fertilizer manufacture and cotton processing use bases

• 2 and 3 only

• 1 and 3 only

• 1 and 2 only

• all of 1, 2, 3

Which of the following statements about acids are TRUE?

1. An acid is used in car batteries

2. A component of vinegar is an acid

3. Acids are used for cleaning metals

• 2 and 3 only

• 1 and 3 only

• 1 and 2 only

• all of 1, 2, 3

Which of the following is NOT an acid-base conjugate pair?

• H20, OH-

• NH4+, NH3

• H2CO3, HCO3-

• H2S, OH-

In the following reaction: HCO3- (aq) + H2O (aq) --> H2CO3(aq) + OH- (aq)

• H2O is an acid and HCO3- is its conjugate base

• HCO3- is an acid and OH- is its conjugate base

• H2O is an acid and H2CO3 is its conjugate base

• H2O is an acid and OH- is its conjugate base

A substance that acts as an acid OR a base is called:

• hydrophillic

• isoprotic

• a salt

• amphoteric