Stoichiometry and Stoichiometric Calculations

IMPORTANT

Stoichiometry and Stoichiometric Calculations: Overview

This topic contains concepts like Stoichiometry and Stoichiometric Calculations, Calculations Involving Mole-mole Relation, Calculations Involving Mole-weight Relation and Calculations Involving Mole-volume Relation.

Important Questions on Stoichiometry and Stoichiometric Calculations

HARD
IMPORTANT

10 g of each carbon and Cl2 are taken in a vessel made to react to form CCl4. Identify limiting reagent and find the mass of CCl4 obtained. Also find the mass of excess reactant remained at the end if any?

HARD
IMPORTANT

If 1.5 moles of oxygen combine with Al to form Al2O3, the mass of Al in g (Atomic mass of Al=27) used in the reaction is

HARD
IMPORTANT

If 1.5 moles of oxygen combine with Al to form Al2O3, the mass of Al in g (Atomic mass of Al=27) used in the reaction is

MEDIUM
IMPORTANT

What volume of hydrogen gas will be consumed at 273 K and 1 atm pressure to obtain 21.6 g of elemental boron (atomic mass=10.8 ) from the reduction of boron trichloride with hydrogen?

MEDIUM
IMPORTANT

25 mL solution of barium hydroxide on titration with 0.1 molar solution of hydrochloric acid gave a titre value of 35 mL. The molarity of barium hydroxide is:

EASY
IMPORTANT

Which of the following weighs the most?

HARD
IMPORTANT

If 1.5 moles of oxygen combine with Al to form Al2O3, the mass of Al in g (Atomic mass of Al=27) used in the reaction is

MEDIUM
IMPORTANT

The number of moles of KMnO4 that will be needed to react with one mole of Sulphite ion in acidic solution is       

EASY
IMPORTANT

When 4.2 g of NaHCO3 is added to a solution of acetic acid (CH3COOH) weighing 10.0 g, it is observed that 2.2 g ofCO2 is released into the atmosphere. The residue left behind is found to weigh 12.0 g. Show that these observations are in agreement with the law of conservation of mass.

MEDIUM
IMPORTANT

Calculate the amount of H2 which is left unreacted in the given reaction:

2H2+O22H2O

If 8gm of H2 is mixed with 16gm of O2.

HARD
IMPORTANT

Calculate the weight of lime obtained by 200 kg heating of 95% pure lime stone.

HARD
IMPORTANT

20g of sugar is dissolved in water to make 100g of solution.Determine the mass percentage of sugar.

MEDIUM
IMPORTANT

A solution contains 20 g of sugar in 80 g of water. calculate the concentration of solution in terms of mass percent.

EASY
IMPORTANT

The mass of CaCO3 required to react with 25 mL of 0.75M  HCl is

HARD
IMPORTANT

1.2 g of Mg (at. mass 24) will produce MgO equal to

EASY
IMPORTANT

One mole of organic compound is subjected to combustion by dumas method. On combustion it gives 6 moles of CO2 , 1 mole of N2 and 4 moles of H2O . Determine the formula.

EASY
IMPORTANT

When 32.25gm ethyl chloride dehydro halogenated, if gives 50% . Alkene, what is the mass of product. (atomic mass of chlorine = 35.5 )

MEDIUM
IMPORTANT

If 30 ml of H2 and 20 ml of O2 reacts to form water, what is left at the end of the reaction

EASY
IMPORTANT

What will be the volume of CO2 at S.T.P., obtained by heating 9.85 g of BaCO3 (Atomic number of Ba = 137 )

EASY
IMPORTANT

In the reaction 4A+2B+3CA4 B2 C3, what will be the number moles of product formed, starting from one mole of A, 0.6 moles of B and 0.72 moles of C ?