Chemistry: Milliequivalents and Millimoles

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What is the concentration of Ca++ ions in terms of mEq/L?

15 mEq/L

10 mEq/L

5 mEq/L (correct)

20 mEq/L

What is the weight in mg of 1 mmol of HPO4- (m.w. 96 g/mol)?

96 mg (correct)

480 mg

48 mg

192 mg

What is the unit of measurement for osmotic pressure?

milliosmoles (mOsmol) (correct)

equivalents (Eq)

millimoles (mmol)

micromoles (μmol)

What is the relationship between mmol and mEq for monovalent species?

numeric values of mmol and mEq are identical Signup and view all the answers

What is the term for one thousandth of a mole?

millimole Signup and view all the answers

How many mmol of monobasic sodium phosphate (m.w. 138 g/mol) are present in 100 g of the substance?

0.725 mmol Signup and view all the answers

What is the term for one millionth of a mole?

micromole Signup and view all the answers

What is the formula to calculate equivalent weight of a substance?

MW / valence Signup and view all the answers

What is the unit of measurement that expresses the chemical activity of an electrolyte?

Milliequivalent Signup and view all the answers

What is the formula to convert milligrams (mg) to milliequivalents (mEq)?

mEq = (mg x valence) / molecular weight Signup and view all the answers

What is the equivalent weight of an electrolyte?

Molecular weight / valence Signup and view all the answers

How many milligrams are equivalent to 8 mEq of potassium (K+)?

312 mg Signup and view all the answers

What is the concentration in mg/mL of a solution containing 3 mEq of KCl per mL?

223.5 mg/mL Signup and view all the answers

What is the concentration in g/mL of a solution containing 4 mEq of Calcium chloride (CaCl2.2H2O) per mL?

0.294 g/mL Signup and view all the answers

A solution has 10 mg / 100 mL of K+ ions. What is the concentration in mEq/L?

2.56 mEq/L Signup and view all the answers

What is the concentration in mg/mL of a solution containing 2 mEq of potassium chloride (KCl) per mL?

149 mg/mL Signup and view all the answers

What is the primary function of electrolytes in the human body?

To maintain acid-base balance Signup and view all the answers

Which of the following is considered a nonelectrolyte?

Dextrose Signup and view all the answers

In which unit is electrolyte concentration expressed in the USA?

mEq Signup and view all the answers

Which of the following ions is NOT a cation?

Cl- Signup and view all the answers

What is the importance of the valence of ions in calculating mEq?

It helps in representing the total number of ionic charges Signup and view all the answers

Which among the following is an example of an electrolyte used in fluid and electrolyte imbalances?

NaCl Signup and view all the answers

What are the internationally employed units for measuring molar concentrations?

mmol/L or µmol/L Signup and view all the answers

What form can electrolyte preparations take when used for medical treatments?

Intravenous infusions Signup and view all the answers

How many mOsmol does 1 mmol of CaCl2 represent?

3 Signup and view all the answers

What is the osmolarity of 0.9% Sodium Chloride Solution (NaCl)?

308 mOsmol/L Signup and view all the answers

What are the units for osmolarity?

Milliosmoles of solute per liter of solution Signup and view all the answers

How many mOsmol/L are in a solution with 10 mg% of Ca++ ions?

2.5 mOsmol/L Signup and view all the answers

What is the osmolar concentration formula according to U.S. Pharmacopeia?

Wt.of substance (g/L) / Mol.Wt (g/mol) * No.of Species * 1000 Signup and view all the answers

How many mOsmol does 1 mmol of sodium citrate (Na3C6H5O7) represent?

4 Signup and view all the answers

What is the difference between osmolarity and osmolality?

Osmolarity is per liter of solution, osmolality is per kilogram of solvent Signup and view all the answers

Calculate the osmolarity of a 5% anhydrous dextrose solution with a molecular weight of 180.

277.7 mOsmol/L Signup and view all the answers