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Acid Base theory LC1 COL

Total questions: 21

Worksheet time: 17mins

Name
Class
Date
1.
How will I ensure I get an accurate final end point?
a)
Be slow and careful 
b)
Repeat until you have 3 very similar titre
c)
Rinse the Burette
d)
Always use the same Pipette filler
2.
Acid + Base ₋--> 
a)
salt + hydrogen
b)
salt + water
c)
salt + carbon dioxide + water
d)
salt
3.
If phenolphthalein turns bright pink, it indicates
a)
an acid 
b)
a base
c)
a neutral
4.
Why do we use water to wash the solution from the burette into the flask
a)
To ensure accuracy (all solution reacts)
b)
To dilute the reagents
c)
To help the reaction go faster
d)
To see the colour of the indicator better
5.
HCl + NaOH → 
a)
NaH + ClOH
b)
NaCl + H2
c)
NaCl + H2O
d)
NaCl + Cl2
6.
What is the endpoint of a titration
a)
Where the amount of acid and base are balanced according to the equation
b)
Where there is no base
c)
At the end
7.
I am titrating 1M HCl with 1M NaOH.  I have 25mL of HCl. How much NaOH will I need?
a)
2.5mL
b)
5mL
c)
25mL
d)
50mL
8.
what is the reading on this burette?
a)
4.40mL
b)
3.50mL
c)
3.60mL
d)
4.50mL
9.
I have 25mL of 1M HCl which neutralises 20mL of NaOH. What is the concentration of the NaOH?
a)
0.8 M
b)
1 M
c)
1.25 M
10.
Identify the products of the chemical equation
3 LiOH + H3PO4 →
a)
Li3PO4 + 3 H2O
b)
LiPO4 + 3 H2O
c)
Li(PO4)3 + 3 H2O
d)
BOY + La + N2
11.
What does pH measure?
a)
Amount of Oxygen Ions
b)
Amount of Hydrogen Ions
c)
The amount of salt in a solution
d)
The density
12.
Which of the following is a conjugate acid/base pair?
a)
HCl/OCl-
b)
H2SO4/SO42-
c)
NH4+/NH3
d)
H3O+/OH-
13.

To prepare a solution of accurately known volume, use a

a)

measuring cylinder

b)

beaker

c)

concial flask

d)

volumetric flask

14.

To deliver a fixed accurate volume of a solution, use a

a)

pipette

b)

burette

c)

dropper

d)

beaker

15.

A standard solution is a solution with accurately known concentration.

a)

True

b)

False

16.

In a titration experiment, a pipette is washed with distilled water and the solution it is to contain before use.

a)

True

b)

False

17.

In a titration experiment, a conical flask is washed with distilled water and the solution it is to contain before use.

a)

True

b)

False

18.

A strong acid according to Arrhenius is something that

a)

completely dissociates in water

b)

slightly dissociates in water

c)

is a a proton donor

d)

is a proton acceptor

19.

Bronsted Lowry states that a weak base is

a)

a poor proton acceptor

b)

a conjugate acid

c)

a good proton donor

20.

Ampotheric means a substance

a)

can act as an acid or a base

b)

is a weak acid

c)

is fully dissolved

d)

is a primary standard

21.

H3PO4 is which type of acid

a)

Monobasic

b)

Dibasic

c)

Tribasic

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