Show:
Acids/Bases Theories
pH & Indicators
Ions & pH
Acid Base Reactions
/Titration
Salts & Electrolytes
100

What is an Arrhenius base(what do bases produce)?

A substance that makes OH- ions

100

What is an Indicator?

Substances that chance color due to the presence of an acid or a base.

100

Do acids have more H+ ions, or more OH- ions?

Acids contain more H+ ions.

100

Which of the following equations represents an Acid-Metal reaction, and which represents a Neutralization reaction?

1. LiOH + HC2H3O2 ---> LiC2H3O2 + H2O

2. Mg + 2HNO3 ---> Mg(NO3)2 + H2(g)

1. Neutralization

2. Acid-Metal

100

What is an electrolyte?

An electrolyte is a substance that creates electricity when dissolved in water, and can create electrical currents. 


200

What side of the equation are conjugate bases/acids on?

Product side

200

What does the pH scale range from?

Values from 0-14

200

Fill in the blanks:

1.The more ___ the lower the pH.

2. The more ___ the higher the pH.


1. H+

2. OH-

200
Using Table J, which of the metals listed will react the best with nitric acid in order to make H2(g)?

1. Au

2. Cr

3. Cu

4.  Ag

2. Cr 

Why? -- Cr is above H+ on Table J, making it a more reactive metal for nitric acid.

200
How do you identify a salt?

It contains one metal, and one nonmetal in it making it a salt.

300

Since protons are donated and accepted in a reaction, do acids accept or donate protons, and do bases accept or donate ions? 

Ex: H2O + NH3 ---> NH4+ + OH-  

Acids donate protons(H+) 

Bases accept protons(H+)

300

What substances contain a pH with a value less than 7?

Acids -- they have pH values less than 7, and bases have pH values above 7.

300

What do neutral solutions have an equal amount of?

H+ and OH- ions

300

What is Titration?

A process that finds the concentration or volume of a solution.

300

What are the three examples of substances that are electrolytes?

Acids, bases, and soluble salts

400

Which of the following is an acid?

1. C6H12O6

2. Mg(OH)2

3. HNO3

4. CH3OH


3. HNO3

400

Which of the following would have a high concentration of H+ ions, due to its pH?

1. H2SO4

2. Mg(OH)2

3. CH3COOH

4. NaCL

1. H2SO4

Why? - Lower pH=More H+ 

400

A solution has [H+] of 1.0 x 10^-4. Using the equation:

pH= -log[H+]

Find of the pH of a solution and find if it is acidic, basic, or neutral. 

pH=-log(1.0 x 10^-3)

pH= 3 

The solution is acidic(pH less than 7)


400
20mL of a 0.6 HCL solution is neutralized, with 50mL of a LiOH solution. Find the concentration of the base given the information in the problem. 

Use: MaVa = MbVb

(0.6)(20) = (50)Mb

12/50Mb

Mb =0.24M


400

Which substance is NOT an electrolyte?

1. CaCl2 

2. LiOH

3. C6H12O6

4. BaCl2

3. C6H12O6

-- this is a sugar, not a acid,base, or a soluble salt

500

In the equation:

H2O + HF --> F- + H3O+

Which of the following are bases/acids, and which are the conjugate bases/acids?

H2O is a base

HF is an acid

F- is the conjugate base

H3O+ is the conjugate acid

500
Using Table M, which indicator changes the color from yellow to blue, when the pH changes from 5.5 to 8.0?



Bromthymol Blue

500

What is the Hydrogen Ion concentration of a solution with a pH of 6?


[H+] = 10⁻pH

[H+] = (1.0 x 10^-6)

      or

0.0000010

500

When Neutralization occurs in a titration mixture where 3.00M of NaOH was added to 25mL of H2SO4, and was turned into a light pink colored solution, what is the comparison of the number of moles of H+ ions, to the moles of OH- ions after Neutralization occurs?

The number of moles of H+ ions equals the number of OH- ions after Neutralization occurs.

500

Why can some aqueous solutions make electrical currents? 

They have mobile/free ions from the electrolytes.