Analytical Chemistry: Separation of Interfering Substances

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What is the primary purpose of Step 6 in the analytical chemistry process?

To separate the interfering substances from the sample (correct)

To complete the analysis of the studied materials

To evaluate the results statistically

To calculate the concentration of the analyte

What is the term for a mixture of two or more substances, where the solute is dissolved in a solvent?

Solvent

Solution (correct)

Solute

Mixture

What is the characteristic of a concentrated solution?

A large amount of solvent

A large amount of solute (correct)

No solute is present

A small amount of solute

What is the term for a solution that has a solute amount less than its solubility limit?

Unsaturated solution Signup and view all the answers

What is the purpose of Step 8 in the analytical chemistry process?

To calculate the concentration of the analyte Signup and view all the answers

What is the result of the reaction between NaCl and H2O?

A salt solution Signup and view all the answers

What is the unit of molarity?

mole per liter Signup and view all the answers

How many millimoles of AgNO3 were dissolved in the solution prepared by dissolving 1.26 gm AgNO3 in a 250 mL volumetric flask?

7.42 mmole Signup and view all the answers

What is the concentration of a solution in terms of grams per milliliter if it has a molarity of 0.250 M?

0.0146 gm/ml Signup and view all the answers

How many grams of Na2SO4 should be weighed out to prepare 500 mL of a 0.100 M solution?

14.2 gm Signup and view all the answers

What is the unit of millimole?

one-thousandth of a mole Signup and view all the answers

What is the molecular weight of a compound expressed in?

gram Signup and view all the answers

What is the formula weight of CaSO4.7H2O?

262.25 g/mol Signup and view all the answers

What is the number of grams in one mole of H2SO4?

98 g/mol Signup and view all the answers

What is the mole concept based on?

Avogadro's number Signup and view all the answers

What is the number of moles in 500 mg Na2SO4?

0.00352 mole Signup and view all the answers

How many molecules are contained in 25.0 g H2?

75.2 × 10^24 molecules Signup and view all the answers

What is a solution that contains a dissolved amount of solute exceeding the normal solubility limit called?

Super saturated solution Signup and view all the answers

Which type of solution has particles that are not visible to the naked eye, but can be filtered through a filter paper?

Slimy solution Signup and view all the answers

What is the weight of a specified number of atoms of an element, containing exactly the same number of atoms as there are in 12g of carbon 12, called?

Atomic weight Signup and view all the answers

What is the sum of the atomic weights of the atoms that make up a molecular compound called?

Molecular weight Signup and view all the answers

What type of solution is a homogeneous mixture of two or more substances, where the particle size of the solute is less than 1 nm?

True solution Signup and view all the answers

A solution that contains a dissolved amount of solute equal to the capacity of the solvent at a given temperature is called?

Saturated solution Signup and view all the answers