• Home
  • Textbooks
  • Essential Math and Calculations for Pharmacy Technicians
  • Determining Milliequivalent Strengths

Essential Math and Calculations for Pharmacy Technicians

Indra K. Reddy, Mansoor A. Khan

Chapter 12

Determining Milliequivalent Strengths - all with Video Answers

Educators

Chapter Questions

04:36

Problem 1

A solution contains $521.5 \mathrm{mg}$ of $\mathrm{KCl}$ in $100 \mathrm{~mL}$. How many $\mathrm{mEq}$ of $\mathrm{K}^{+}$ and $\mathrm{Cl}^{-}$ions are present in this solution?

Dr. Satish Ingale
Dr. Satish Ingale
Numerade Educator
02:28

Problem 1

How many $\mathrm{mEq}$ of potassium chloride are represented in $10-\mathrm{mL}$ dose of $10 \%(\mathrm{w} / \mathrm{v})$ potassium chloride syrup?

John Nicolle
John Nicolle
Numerade Educator

Problem 2

A prescription order calls for a $750 \mathrm{~mL}$ solution of potassium sulfate $\left(\mathrm{K}_2 \mathrm{SO}_4\right)$ containing $15 \mathrm{mEq}$ of $\mathrm{K}^{+}$. How many milligrams of potassium sulfate are needed?

Check back soon!
01:14

Problem 3

A prescription order calls for a $500 \mathrm{~mL}$ solution of $\mathrm{NaCl}$ containing $10 \mathrm{mEq}$ of $\mathrm{Na}^{+}$. How many milligrams of $\mathrm{NaCl}$ are required?

David Collins
David Collins
Numerade Educator
06:30

Problem 4

How many $\mathrm{mEq}$ of $\mathrm{Ca}^{2+}$ are represented in a $500-\mathrm{mg}$ tablet of calcium gluconate $($ molecular weight $=235 \mathrm{~g} / \mathrm{mol})$ ?

Susan Hallstrom
Susan Hallstrom
Numerade Educator
01:09

Problem 5

How many $\mathrm{mEq}$ of $\mathrm{K}^{+}$are represented in a $500-\mathrm{mg}$ tablet of potassium phenoxymethyl penicillin (molecular weight $=388 \mathrm{~g} / \mathrm{mol}$; valence $=1$ )?

John Nicolle
John Nicolle
Numerade Educator
02:38

Problem 6

What is the $\mathrm{mEq}$ wt of ferrous ion $\left(\mathrm{Fe}^{2+} ; \mathrm{g}\right.$-atomic wt of $55.85 \mathrm{~g}$ )?

Adriano Chikande
Adriano Chikande
Numerade Educator
00:38

Problem 7

What is the mEq wt of sodium phosphate $\left(\mathrm{Na}_2 \mathrm{HPO}_4 \cdot 7 \mathrm{H}_2 \mathrm{O}\right)$ ?

Himanshu Garg
Himanshu Garg
Numerade Educator
01:09

Problem 8

How many $\mathrm{mEq}$ of $\mathrm{Na}^{+}$are in $120 \mathrm{~mL}$ of an $8 \%$ solution of sodium cyclamate $($ molecular weight $=201.33 \mathrm{~g} / \mathrm{mol} ;$ valence $=1)$ ?

Narayan Hari
Narayan Hari
Numerade Educator
08:16

Problem 9

How many $\mathrm{mEq}$ of $\mathrm{Ca}^{+}$are available in a $500-\mathrm{mg}$ tablet of calcium lactate pentahydrate $($ molecular weight $=308.3$; valence $=2)$ ?

Yongyao Zhou
Yongyao Zhou
Numerade Educator
01:27

Problem 10

How many $\mathrm{mEq}$ of $\mathrm{Ca}^{+}$are available in $400 \mathrm{~mL}$ of a solution of calcium chloride at $1.5 \mathrm{mg} / \mathrm{mL}$ strength?

Jorge Villanueva
Jorge Villanueva
Numerade Educator
02:22

Problem 11

How many milligrams of calcium chloride dihydrate $\left(\mathrm{CaCl}_2 \cdot 2 \mathrm{H}_2 \mathrm{O}\right.$, molecular weight $=147 \mathrm{~g} / \mathrm{mol}$ ) are needed to prepare $1500 \mathrm{~mL}$ of solution containing $5 \mathrm{mEq} /$ liter $\mathrm{Ca}^{+2}$ ?

John Nicolle
John Nicolle
Numerade Educator

Problem 12

How many milligrams of calcium chloride $\left(\mathrm{CaCl}_2\right.$, molecular weight $=$ $111 \mathrm{~g} / \mathrm{mol}$ ) are needed to prepare $750 \mathrm{~mL}$ of solution containing $10 \mathrm{mEq} / \mathrm{L}$ of $\mathrm{Ca}^{+2}$ ?

Check back soon!
01:10

Problem 13

How many milligrams of sodium chloride are required to prepare $500 \mathrm{~mL}$ of solution containing $50 \mathrm{mEq} / \mathrm{L}$ of sodium?

David Collins
David Collins
Numerade Educator

Problem 15

How many $\mathrm{mEq}$ of magnesium sulfate (molecular weight $=120$ ) are represented in $30-\mathrm{mL}$ dose of a $20 \%$ (w/v) magnesium sulfate extemporaneous laxative preparation?

Check back soon!
03:27

Problem 16

How many $\mathrm{mEq}$ of potassium sulfate are represented by $15 \mathrm{~mL}$ of $25 \%$ potassium sulfate solution?

Dr. Satish Ingale
Dr. Satish Ingale
Numerade Educator

Problem 17

How many $\mathrm{mEq}$ of $\mathrm{NaCl}$ are represented by $3 \mathrm{~g}$ of $\mathrm{NaCl}$ ?

Check back soon!

Problem 18

How many $\mathrm{mEq}$ of potassium sulfate are represented by $870 \mathrm{mg}$ of potassium sulfate?

Check back soon!
01:22

Problem 19

A dehydrated patient has been receiving $1.5 \mathrm{mEq}$ of sodium chloride per $\mathrm{lb}$ of his body weight. If this patient's body weigh is $150 \mathrm{lb}$, how many milliliters of $0.9 \%$ sterile saline solution should be given to this patient?

Thomas Harr
Thomas Harr
Numerade Educator
01:22

Problem 20

A patient has been receiving $3 \mathrm{mEq}$ of sodium chloride per $\mathrm{kg}$ of his body weight. If this patient weighs $70 \mathrm{~kg}$, how many milliliters of $0.9 \%$ sterile saline solution should be administered to this patient?

Thomas Harr
Thomas Harr
Numerade Educator
01:22

Problem 21

What is the $\mathrm{Na}^{+}$content in terms of $\mathrm{mEq} / \mathrm{L}$ of a solution that contains $9 \mathrm{~g}$ of sodium chloride in a liter solution?

Ronald Prasad
Ronald Prasad
Numerade Educator
04:36

Problem 22

How many $\mathrm{mEq}$ of $\mathrm{K}^{+}$and $\mathrm{Cl}^{-}$ions are available in 100 milliliters of a solution that contains $260.75 \mathrm{mg}$ of $\mathrm{KCl}$ ?

Dr. Satish Ingale
Dr. Satish Ingale
Numerade Educator

Problem 23

A prescription order calls for $750 \mathrm{~mL}$ solution of potassium sulfate to be made so that it will contain $7.5 \mathrm{mEq}$ of $\mathrm{K}^{+}$ion. How many milligrams of potassium sulfate $\left(\mathrm{K}_2 \mathrm{SO}_4\right.$; molecular weight $\left.=174 \mathrm{~g} / \mathrm{mol}\right)$ are needed?

Check back soon!
01:14

Problem 24

A prescription order calls for $500 \mathrm{~mL}$ solution of $\mathrm{NaCl}$ to be made so that it will contain $7.5 \mathrm{mEq}$ of $\mathrm{Na} .^{+}$How many milligrams of $\mathrm{NaCl}$ are required?

David Collins
David Collins
Numerade Educator

Problem 25

How many $\mathrm{mEq}$ of $\mathrm{Ca}^{2+}$ are represented by $2 \mathrm{~g}$ of calcium chloride?

Check back soon!
01:27

Problem 26

How many $\mathrm{mEq}$ of $\mathrm{K}^{+}$are in a $700-\mathrm{mg}$ tablet of potassium phenoxymethyl penicillin (molecular weight $=388 \mathrm{~g} / \mathrm{mol} ;$ valence $=1)$ ?

Jorge Villanueva
Jorge Villanueva
Numerade Educator
00:38

Problem 27

What is the mEq wt of sodium phosphate $\left(\mathrm{Na}_2 \mathrm{HPO}_4 \cdot 7 \mathrm{H}_2 \mathrm{O}\right)$ ?

Himanshu Garg
Himanshu Garg
Numerade Educator
01:09

Problem 28

How many $\mathrm{mEq}$ of $\mathrm{Na}^{+}$are in $360 \mathrm{~mL}$ of an $8 \%$ solution of sodium cyclamate $($ molecular weight $=201.33 \mathrm{~g} / \mathrm{mol}$; valence $=1$ )?

Narayan Hari
Narayan Hari
Numerade Educator
00:33

Problem 29

How many $\mathrm{mEq}$ of $\mathrm{Ca}^{+}$are available in $750-\mathrm{mg}$ calcium lactate pentahydrate $($ molecular weight $=308.3$, valence $=2$ ) tablet?

Stephen Pulliam
Stephen Pulliam
Numerade Educator
01:27

Problem 30

How many $\mathrm{mEq}$ of $\mathrm{Ca}^{+}$are available in $1200 \mathrm{~mL}$ of a solution of calcium chloride containing $1.5 \mathrm{mg} / \mathrm{mL}$ of $\mathrm{Ca}^{+}$?

Jorge Villanueva
Jorge Villanueva
Numerade Educator
02:22

Problem 31

How many milligrams of calcium chloride dihydrate $\mathrm{CaCl}_2 \cdot 2 \mathrm{H}_2 \mathrm{O}$ (molecular weight $=147 \mathrm{~g} / \mathrm{mol}$ ), are needed to prepare $500 \mathrm{~mL}$ of solution containing $5 \mathrm{mEq} /$ liter $\mathrm{Ca}^{+2}$ ?

John Nicolle
John Nicolle
Numerade Educator
02:22

Problem 32

How many milligrams of calcium chloride $\left(\mathrm{CaCl}_2\right.$, molecular weight $=$ $111 \mathrm{~g} / \mathrm{mol}$ ) are needed to prepare $750 \mathrm{~mL}$ of solution containing $5 \mathrm{mEq} / \mathrm{L}$ of $\mathrm{Ca}^{+2}$ ?

John Nicolle
John Nicolle
Numerade Educator
02:28

Problem 33

How many $\mathrm{mEq}$ of potassium chloride are represented in a $10-\mathrm{mL}$ dose of $20 \%(w / v)$ potassium chloride syrup?

John Nicolle
John Nicolle
Numerade Educator

Problem 34

How many $\mathrm{mEq}$ of magnesium sulfate ( molecular weight $=120$ ) are represented in each $30-\mathrm{mL}$ dose of a $10 \%(\mathrm{w} / \mathrm{v})$ magnesium sulfate extemporaneous laxative preparation?

Check back soon!
03:27

Problem 35

How many $\mathrm{mEq}$ of potassium sulfate $\left(\mathrm{K}_2 \mathrm{SO}_4\right.$, molecular weight $\left.=174\right)$ are available in $150 \mathrm{~mL}$ of $25 \%$ solution of potassium sulfate?

Dr. Satish Ingale
Dr. Satish Ingale
Numerade Educator
00:51

Problem 36

How many $\mathrm{mEq}$ of $\mathrm{NaCl}$ are available in $2.93-\mathrm{g}$ of $\mathrm{NaCl}$ ?

Ronald Prasad
Ronald Prasad
Numerade Educator
03:48

Problem 37

How many $\mathrm{mEq}$ of potassium sulfate $\left(\mathrm{K}_2 \mathrm{SO}_4\right.$, molecular weight $\left.=174\right)$, are available in $3.480 \mathrm{~g}$ of potassium sulfate?

Zafar Haider
Zafar Haider
Numerade Educator
01:22

Problem 38

A dehydrated patient receives $1.5 \mathrm{mEq}$ of sodium chloride per $\mathrm{lb}$ of his body weight. If the patient's body weighs $75 \mathrm{lb}$, how many milliliters of $0.9 \%$ sterile saline solution should the patient be given?

Thomas Harr
Thomas Harr
Numerade Educator
01:22

Problem 39

A patient receives $3-\mathrm{mEq}$ of sodium chloride per $\mathrm{kg}$ of his body weight. If the patient weighs $140 \mathrm{~kg}$, how many milliliters of $0.9 \%$ sterile saline solution should the patient be administered?

Thomas Harr
Thomas Harr
Numerade Educator
01:22

Problem 40

What is the $\mathrm{Na}^{+}$content in $\mathrm{mEq} / \mathrm{L}$ of a solution containing $27 \mathrm{~g}$ of sodium chloride/liter solution?

Ronald Prasad
Ronald Prasad
Numerade Educator
04:36

Problem 41

A solution that contains $1.341 \mathrm{~g}$ of $\mathrm{KCl}$ has how many $\mathrm{mEq}$ of $\mathrm{K}^{+}$and $\mathrm{Cl}^{-}$?

Dr. Satish Ingale
Dr. Satish Ingale
Numerade Educator

Problem 42

A prescription order calls for $1500 \mathrm{~mL}$ solution of potassium sulfate to be made so that it will contain $15 \mathrm{mEq}$ of $\mathrm{K}^{+}$ion. How many milligrams of potassium sulfate $\left(\mathrm{K}_2 \mathrm{SO}_4\right.$, molecular weight $\left.=174 \mathrm{~g} / \mathrm{mol}\right)$ are needed?

Check back soon!
01:22

Problem 43

A prescription order calls for one-liter solution of $\mathrm{NaCl}$ to be made so that it will contain $15 \mathrm{mEq}$ of $\mathrm{Na}^{+}$ion. How many milligrams of $\mathrm{NaCl}$ (molecular weight $=58.5 \mathrm{~g} / \mathrm{mol}$ ) are required?

Ronald Prasad
Ronald Prasad
Numerade Educator
02:24

Problem 44

How many $\mathrm{mEq}$ of $\mathrm{Na}^{+}$are in $360 \mathrm{~mL}$ of $16 \%$ solution of sodium cyclamate $($ molecular weight $=201.33 \mathrm{~g} / \mathrm{mol}$, valence $=1$ )?

Sima Sarker
Sima Sarker
Numerade Educator
01:27

Problem 45

How many $\mathrm{mEq}$ of $\mathrm{Ca}^{+}$are available in $1200 \mathrm{~mL}$ of a solution of calcium chloride containing $3 \mathrm{mg} / \mathrm{mL}$ of $\mathrm{Ca}^{+}$?

Jorge Villanueva
Jorge Villanueva
Numerade Educator
02:22

Problem 46

How many milligrams of calcium chloride $\left(\mathrm{CaCl}_2\right.$, molecular weight $=$ $111 \mathrm{~g} / \mathrm{mol}$ ) are needed to prepare $3000 \mathrm{~mL}$ of solution containing $5 \mathrm{mEq} / \mathrm{L}$ of $\mathrm{C}^{+2}$ ?

John Nicolle
John Nicolle
Numerade Educator
02:28

Problem 47

How many $\mathrm{mEq}$ of potassium chloride are represented in a $50-\mathrm{mL}$ dose of $10 \%(w / v)$ potassium chloride syrup?

John Nicolle
John Nicolle
Numerade Educator
02:31

Problem 48

How many $\mathrm{mEq}$ of magnesium sulfate (molecular weight $=120$ ) are represented in each $90-\mathrm{mL}$ dose of a $15 \%(\mathrm{w} / \mathrm{v})$ magnesium sulfate extemporaneous laxative preparation?

Eileen Sullivan
Eileen Sullivan
Numerade Educator