Stoichiometry

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What is the volume of 1 mole of any gas at STP?

11.2 L

44.8 L

24.4 L

22.4 L (correct)

What is the relationship between the rate of diffusion of two gases and their molecular masses?

Inversely proportional to the cube of their molecular masses

Inversely proportional to the square root of their molecular masses (correct)

Directly proportional to the square root of their molecular masses

Directly proportional to the square of their molecular masses

What is the ratio of the mass of a fixed volume of vapour to the mass of the same volume of hydrogen under the same conditions called?

Vapour pressure

Vapour density (correct)

Relative atomic mass

Molar volume

What is the expression for the mass of 11.2 L of any gas at STP?

V × D Signup and view all the answers

Why do the laws of definite proportions and multiple proportions not hold good for nonstoichiometric compounds?

Because they have variable composition Signup and view all the answers

What is the volume of 1 mole of H2O in its gaseous state?

22.4 litres Signup and view all the answers

What is the minimum molecular mass of a macromolecular substance calculated from?

The mass of the minor component Signup and view all the answers

What is the equivalent mass of a substance that reacts with 1 mole of H2SO4?

1 mole of NH3SO4 Signup and view all the answers

What is the primary reason why the equivalent concept is preferred in volumetric reactions?

Because it does not require the knowledge of balanced equations. Signup and view all the answers

In problems involving mass-volume relationships, what is the primary unit of measurement for gases?

Liters Signup and view all the answers

Why is the mole concept convenient to apply in gravimetric analysis?

Because it involves simpler reactions. Signup and view all the answers

What is the primary reason why volumes of gases need to be converted into N.T.P.?

To ensure consistency in the measurement of gas volumes. Signup and view all the answers

What is the equivalent mass of a metal that displaces 22400 ml of hydrogen at STP from an acid?

The metal's atomic mass Signup and view all the answers

In the oxide formation method, what is the mass of the element that combines with 8 grams of oxygen?

The equivalent mass of the element Signup and view all the answers

What is the basis of the Victor Meyer method for determining the molecular mass of a volatile liquid or solid?

The combination of Avogadro's hypothesis and Dalton's law of partial pressure Signup and view all the answers

What is the term given to the mass of a metal that displaces 11200 ml of hydrogen at NTP from an acid, alkali, or alcohol?

Equivalent mass of the metal Signup and view all the answers

What is the formula to calculate the average atomic mass of an element?

∑Ai Xi / ∑ Xi total Signup and view all the answers

What is the formula to calculate the equivalent mass of an acid or base?

W / V × N Signup and view all the answers

What is the formula to calculate the gram equivalent mass?

Electrochemical equivalent × 96500 Signup and view all the answers

In the electrolytic method, what is the quantity of substance that reacts at an electrode when 1 faraday of electricity is passed?

Its gram equivalent mass Signup and view all the answers

What is the purpose of finding the simplest ratio in calculating the empirical formula?

To write the constituent atoms with their respective number of atoms Signup and view all the answers

What is the equivalent mass of a substance that combines with 8.0 parts by mass of oxygen?

Mass of the substance in grams / 8 Signup and view all the answers

What is the gram equivalent mass (GEM) of a substance?

Quantity of a substance in grams numerically equal to its equivalent mass Signup and view all the answers

What is the expression for the equivalent mass of a metal using the chloride formation method?

Mass of metal / 35.5 Signup and view all the answers

What is the expression for the equivalent mass of a metal using the metal displacement method?

Mass of metal / 8 Signup and view all the answers

What is the equivalent mass of a metal that displaces 5600 ml of oxygen at STP?

Mass of metal / 2 Signup and view all the answers

What is the gram equivalent mass of a substance if its equivalent mass is 20 and it reacts with 35.5 g of chlorine?

20 g Signup and view all the answers

In the chloride formation method, what is the equivalent mass of a metal that reacts with 35.5 g of chlorine?