Acids & Bases

Acids

100

what is the highest pH level of an acid? A) 5 B)10 C)100 D) 7

D) 7

200

Which one of the following substances is an acid? A. Lemon juice B. Salt solution C. Bleach D. Water

A. Lemon juice

300

Neutralisation can be described as: A. An acid and an alkali cancelling each other out B. An acid becoming clearer in color C. salt dissolving in water D. bubbles of gas appearing

A. an acid and an alkali cancelling each other out

400

when an acid is added to an alkali what happens to the pH? A. it goes up B. it goes down C. it stays the same D. none of these

A. it goes up

500

When acid is added to water we say the water has: A. diluted the acid B. neutralized the acid C. dissolved in acid D. none of the above

A. Diluted the acid

Bases

100

true or false bases solutions have a pH below 7.

false

200

true or false bases changes litmus paper to blue.

true

300

True or False every liquid is either and acid or a base

false

400

True or False did Arrhenius said bases give OH-

TRUE

500

What are four characteristics of bases? A. react with metals, taste bitter, pH more than 7, litmus paper blue B. does not react with metal, taste bitter, pH more than 7, litmus paper blue C. reacts with metal, taste sour, pH less than 7, litmus paper red.

B. does not react with metal, taste bitter, pH more than 7, litmus paper blue

Acids&Bases

100

Of four different laboratory solutions, the solution with the highest acidity has a pH of A. 11 B.5 C.7 D.3

D.3

200

What does acid and bases produce? a. water + acid b. base + water c. salt + water d. acid + base

c. salt+ water

300

Which of the following can be shown to be both a Bronsted acid and a Bronsted base? a.O-2 b.HSO4-1 c.PO4-3 d.CN-1

b. HSO4-

400

A water sample was found to have a pH of 6 at 25 degree Celsius. what is the hydronium ion concentration in the water sample? A. 1*10-8 B. 1*10-6 C. 6*10-8 D. 6*10-6

B. 1*10-6

500

What is the pH of a solution of KOH with a hydroxide concentration of [OH-]=1*10-4? A. -10 B. 4 C. -4 D. 10

D. 10

Wildcard

100

ulcers are often caused by an excess of stomach acid. Milk of magnesia is often used to soothe the irritation. milk of magnesia is probably A. an acid B. a base C. an indicator D. a colloid

b. a base

200

equal volumes of 1 molar hydrochloric acid (HCL) and 1 molar sodium hydroxide base (NaOH) are mixed. after mixing, the solution will be a. strongly acidic b. weakly acidic c. nearly neutral d. weakly basic

c. nearly neutral

300

NH3(aq) + HCl(aq) -> NH4(aq)Cl(aq) in this reaction, why is the ammonia considered a base? a. NH3 donates a proton b. NH3 decreases the hydroxide ion concentration c. NH3 accepts a proton d. NH3 increases the hydronium ion concentration.

c. NH3 accepts a proton

400

what is the oxidation number of sulfur in Na2S2O3? a. -1 b.+2 c.+6 d.+4

b.+2

500

which substance is an electrolyte? a. CCL4 b. C2H6 c. HCl d. H2O

c. HCl