Chem Exam 1 Kahoot Practice

Question 1

What is the origin of acids?

Answer 1

Non-metal oxide + water

Question 2

Which one of the following is a halogenic acid?

Answer 2

HF

Question 3

Which of the following is considered diprotic?

Answer 3

H2SO3

Question 4

When a dibasic base is mixed with water it makes

Answer 4

2 hydroxide ions

Question 5

PH indicates ___ while POH indicates ___

Answer 5

Acidity, basicity

Question 6

Calculate PH of 0.2M of H2SO4 solution

Answer 6

0.39

Question 7

What is not true of bases

Answer 7

Donate protons

Question 8

When rate of formation of products = rate of formation of reactants and reaction is…

Answer 8

In equilibrium

Question 9

The equation for pH is

Answer 9

PH = pKA + log ([A-]/[HA])

Question 10

If you have a solution with a pH of 8, what is the pOH?

Answer 10

6

Question 11

pH = 7 ___, pH > 7 ___, pH < 7 ___

Answer 11

Neutral, basic, acidic

Question 12

If an acid or base dissociates in water completely… (>95%)

Answer 12

It is strong

Question 13

Which of the following are strong acids

Answer 13

HCl

Question 14

Which of the following is true?

Answer 14

Stronger the acid -> weaker the conjugate base

Question 15

Which is untrue of buffers?

Answer 15

Water is an example of a good buffer

Question 16

What is untrue of water

Answer 16

It resists change in pH when acid or base is added

Question 17

Henderson Hasselbalch equation…

Answer 17

Indicates the pH of a buffer

Question 18

Which of the following is true when interpreting pKA…

Answer 18

A low value of pKA indicates a stronger weak acid

Question 19

Which is the weaker acid

Answer 19

PKA = 4.7 > pKA = 2.5

Question 20

An excellent buffer…

Answer 20

Has a pH that is close to that of the pKA of the weak acid

Question 21

Which is true of the open suffer system in the body

Answer 21

Low CO2 causes alkalosis

Question 22

Which is a physical property of a base

Answer 22

Slippery, bitter

Question 23

Which of the following is a neutralization reaction?

Answer 23

Metal hydroxide + acid = salt + water

Question 24

T/F: antacids contain bases to neutralize stomach acid

Answer 24

True

Question 25

What is the acid that is used in biomacromolecules for a buffer?

Answer 25

H3PO4

Question 26

How is a covalent bond made?

Answer 26

Non-metals + non-metals

Question 27

Which hormone helps regulate homeostasis?

Answer 27

Mineralcorticoid, insulin

Question 28

What solution do we give to patients suffering from dehydration?

Answer 28

Saline .89%

Question 29

What is the total concentration of solute particles in a solution?

Answer 29

Osmolarity

Question 30

Order strongest to weakest: A) Ka of CH3COOH = 1.8 * 10^-5 B) Ka of H2CO3 = 6.5 * 10^-6 C) Ka of H3PO4 = 1.7 * 10^-3

Answer 30

C, A, B

Question 31

Where does the closed system buffer work?

Answer 31

In the cells

Question 32

Strong acid + weak base = ___ solution

Answer 32

Acidic