AnswersChemistryTitration Graphs

Titration Graphs — Quiz Answers

10 verified answers1 views
1
Free Preview

An Erlenmeyer flask contains 25 point 0 0 milliliters of 0 point 1 0 cap m HCl What is the pH of the solution? Use pH is equal to negative log times open bracket cap h raised to the plus power close bracket

A
1 point 0
B
negative 1 point 0
C
negative 1 point 6
D
0 point 4 0
2
Free Preview

An Erlenmeyer flask contains 25 point 0 0 milliliters of 0 point 5 0 0 cap m HCl before a titration is begun. How many moles of hydrogen ions are present in the flask at this time?

A
50 point 0
B
12 point 5
C
20 point 0
D
0 point 0 1 2 5
3

Which graph represents a titration between NaOH times aq and HCl times aq ?

A
Image with description A schematic of a S-curve graph represents a titration curve with the X-axis labeled 'Volume of Acid Added (mL)' ranging from 0 to 60 with intervals of 10 mL, and the Y-axis labeled 'pH' ranging from 0 to 12 with intervals of 2 pH mL. The curve starts from the point (0, 11), decreases gradually until it reaches (50, 8), and then falls sharply from (50, 8) to (50, 4), indicating the point of steepest decline.
B
Image with description A schematic of a S-curve graph represents a titration curve with the X-axis labeled 'Volume of Base Added (mL)' ranging from 0 to 20 with intervals of 5 mL, and the Y-axis labeled 'pH' ranging from 0 to 14 with intervals of 2 pH mL. The curve starts at the point (0, 4), rises steadily to (10, 8), then sharply increases from (10, 8) to (10, 12), before leveling off around (15, 12).
C
Image with description A schematic of a S-curve graph represents a titration curve with the X-axis labeled 'Volume of Base Added (mL)' ranging from 0 to 50 with intervals of 10 mL, and the Y-axis labeled 'pH' ranging from 0 to 14 with intervals of 2 pH mL. The curve starts at the point (0, 1), increases gradually to (10, 1), then sharply rises till (15,6) and form a horizontal line till (25,6). A sharp increase in pH is observed from (25, 6) to (35, 13), and finally levelling off around (40, 14).
D
Image with description A schematic of a S-curve representing a titration graph. The X-axis represents the 'Volume of Base Added (mL)' ranging from 0 to 100 with intervals of 20 mL. The Y-axis represents pH, ranging from 0 to 14 in multiples of 2. The curve starts from the point (0, 1) to (40, 3). A vertically straight line is observed from (40, 3) to (40, 11). From there onwards to the end, the line is almost horizontal, forming an 'S' shape.
4

20 point 0 milliliters of 0 point 0 6 cap m HCl (in a flask) is titrated with 0 point 0 4 cap m NaOH (in a burette). How many milliliters of NaOH needs to be used to reach the equivalence point?

A
20 milliliters
B
20 point 0 milliliters
C
30 milliliters
D
0 point 0 3 milliliters
5

A titration graph begins at a pH of 11 and ends at a pH of 1 point 5 This graph most likely presents data from what type of titration?

A
a strong base titrated by a strong acid
B
a weak acid titrated by a strong base
C
a weak base titrated by a strong acid
D
a polyprotic acid titrated by a strong base
6

A titration graph shows little resistance to a change in pH at the start and has a single equivalence point of 8 point 6 This graph most likely presents data from what type of titration?

A
a polyprotic acid titrated by a strong base
B
a weak acid titrated by a strong base
C
a strong base titrated by a strong acid
D
a weak base titrated by a strong acid
7

Which describes the titration graph when a strong acid is titrated by a weak base?

A
It begins at a high pH and has an equivalence point of 7 .
B
It begins at a low pH and has an equivalence point of 7 .
C
It begins at a high pH and has an equivalence point greater than 7 .
D
It begins at a low pH and has an equivalence point less than 7 .
8

Which titration curve represents 18 point 0 milliliters of 0 point 1 0 cap m NH sub 3 titrated in a flask with 0 point 1 0 cap m HCl ?

A
Image with description A schematic of a graph represents a titration curve with the X-axis labeled 'Volume of Base Added (mL)' ranging from 0 to 35 with intervals of 5 mL, and the Y-axis labeled 'pH' ranging from 0 to 14 with intervals of 5 pH mL. The curve starts at the point (0, 11) falls steadily to (5, 4), then sharply increases from (5, 4) to (10, 12), before leveling off around (10, 1).
B
Image with description A schematic of a graph represents a titration curve with the X-axis labeled 'Volume of Base Added (mL)' ranging from 0 to 100 with intervals of 20 mL, and the Y-axis labeled 'pH' ranging from 0 to 14 with intervals of 2 pH mL. The curve starts at the point (0, 2), rises gradually, and then sharply rises till (15, 7) and then onwards falling sharply till (10, 1), before leveling off around (40, 14). Image with description A schematic of a S-curve representing a titration graph. The X-axis represents the 'Volume of Base Added (mL)' ranging from 0 to 100 with intervals of 20 mL. The Y-axis represents pH, ranging from 0 to 14 in multiples of 2. The curve starts from the point (0, 1) to (40, 3). A vertically straight line is observed from (40, 3) to (40, 11). From there onwards to the end, the line is almost horizontal, forming an 'S' shape. Image with description A schematic of a graph represents a titration curve with the X-axis labeled 'Volume of Base Added (mL)' ranging from 0 to 35 with intervals of 5 mL, and the Y-axis labeled 'pH' ranging from 0 to 14 with intervals of 5 pH mL. The curve starts at the point (0, 3) and increases gradually till (15, 5), then rises sharply till (25, 13), before leveling off around (25, 14 ).
C
Image with description A schematic of a graph represents a titration curve with the X-axis labeled 'Volume of Acid Added (mL)' ranging from 0 to 35 with intervals of 5 mL, and the Y-axis labeled 'pH' ranging from 0 to 12 with intervals of 2 pH mL. The curve starts at the point (0, 11), decreases gradually until it reaches (15, 7), and then falls sharply till (20, 2) and then falls gradually till (30, 1), before leveling off around (30, 0).
D
Image with description A schematic of a S-curve graph represents a titration curve with the X-axis labeled 'Volume of Acid Added (mL)' ranging from 0 to 60 with intervals of 10 mL, and the Y-axis labeled 'pH' ranging from 0 to 12 with intervals of 2 pH mL. The curve starts from the point (0, 11), decreases gradually until it reaches (50, 8), and then falls sharply from (50, 8) to (50, 4), indicating the point of steepest decline.
9

Which of these would help you identify a titration curve that involved a strong acid titrated by a weak base?

A
The pH at the equivalence point is lower than 7 .
B
The pH at the equivalence point is higher than 7 .
C
There is a rapid change in pH near the equivalence point open paren pH is equal to 7 close paren .
D
The titration curve begins at a higher pH and ends at a lower pH .
10

Which name is given to the point that is indicated by the arrow?

A
midpoint
B
edge point
C
acid-base point
D
equivalence point

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Quiz

Quiz
10 verified answers

Quiz

Quiz
25 verified answers

Test

Titration Graphs — Quiz Answers — Chemistry