Module 6.1 Acids, Bases, & Salts

Question 1

Acid always starts with ?

Answer 1

H

ex. HNO₃ (Nitric Acid) , HCL (Hydrochloric Acid) , H₂SO₄ (Sulfuric Acid)

Question 2

Base always ends with ?

Answer 2

OH

ex. NaOH, NH₄OH

Question 3

Salt do not start with ? or end with ?

Answer 3

H

OH

ex. Ca₂SO₄, NaCl, AlBr₃

Question 4

pH for Acids & Bases

(under-case p Uppercase H = pH)

Range is ?

Answer 4

0 —— 7 —— 14

Question 5

Any pH less than 7 has a ? pH

Answer 5

Acidic

0 -> 6

Question 6

Any pH more than 7 has a ? pH

Answer 6

Basic

8 -> 14

Question 7

Any pH equal to 7 has a ? pH

Answer 7

Neutral

Question 8

pH concentration of [H⁺] (Acid)

[H⁺] = 0.0001m = ? pH

Answer 8

First convert to exponential number by moving the decimal point until it is a number between 1 & 10

1 * 10⁻⁴ m

Then take the exponent and change the sign of it

pH = - (-4) = 4

Question 9

pOH concentration of [OH⁺] (Base)

[OH⁺] = 0.01m = ? pOH

Answer 9

First convert to exponential number by moving the decimal point until it is a number between 1 & 10

1* 10⁻²

Then take the exponent and change the sign of it

pOH = - (-2) = 2

Question 10

pH + pOH always = ?

Answer 10

14

Question 11

We only care about pH or pOH ?

Answer 11

pH

if given pOH to solve then fill the remaining needed to equal 14 and that is pH

Question 12

pH + pOH = 14

[OH⁻] = 0.01

pH ? =

Answer 12

0.01 = 1*10⁻²

pOH = - (-2) = 2

pH = 12 (because 2+12=14)