#1
Which indicator is commonly used in acid-base titrations?
Methyl orange
Phenolphthalein
Bromothymol blue
Litmus
#2
What is the pH of a neutral solution?
0
7
14
Depends on the temperature
#3
What is the equivalent point in an acid-base titration?
When the pH is equal to 7
When the indicator changes color
When the amount of acid equals the amount of base added
When the titrant is completely reacted with the analyte
#4
What is the significance of the stoichiometric point in a titration?
It indicates the presence of excess titrant
It signifies the completion of the reaction
It helps determine the molarity of the analyte
It marks the starting point of the titration
#5
What is the primary function of a buffer solution?
To resist changes in pH
To neutralize acids
To increase the rate of reaction
To decrease the concentration of solutes
#6
What is the formula for calculating the pH of a solution?
pH = -log[H+]
pH = -log[OH-]
pH = log[H+]
pH = log[OH-]
#7
What is the role of an indicator in an acid-base titration?
To determine the volume of titrant required
To change color at the equivalence point
To neutralize the analyte
To speed up the reaction
#8
Which of the following is true about a titration of a weak acid with a strong base?
The pH at the equivalence point is neutral
The pH at the equivalence point is acidic
The pH at the equivalence point is basic
The pH at the equivalence point is indeterminate
#9
What happens to the pH at the equivalence point in a strong acid-strong base titration?
It decreases
It increases
It remains the same
It fluctuates
#10
In a titration curve, what does the vertical region represent?
The buffer region
The equivalence point
The stoichiometric point
The pH change is gradual
#11
What type of titration curve is obtained when a strong acid is titrated with a weak base?
A sharp curve
A flat curve
A gradual curve
An irregular curve
#12
How does the pH change during the titration of a weak acid with a strong base?
pH decreases initially, then increases
pH increases initially, then decreases
pH decreases continuously
pH increases continuously
#13
What is the relationship between the volume of titrant added and the pH in a titration?
Linear
Exponential
Parabolic
Stepwise
#14
What is the significance of the half-equivalence point in a titration curve?
It represents the point where half of the titrant has reacted
It marks the beginning of the reaction
It signifies the end of the reaction
It indicates the presence of excess analyte