Stoichiometry & Calculations: JEE Questions & Solutions

80 mL of a hydrocarbon on mixing with 264 mL of oxygen in a closed U-tube undergoes complete combustion. The residual gases after cooling…

14.0 g of calcium metal is allowed to react with excess HCl at 1.0 atm pressure and 273 K. Which of the following statements is incorrect?…

By usual analysis, 1.00 g of compound (X) gave 1.79 g of magnesium pyrophosphate. The percentage of phosphorus in compound (X) is: 1cm…

Aqueous HCl reacts with MnO2(s) to form MnCl2(aq), Cl2(g) and H2O(l). What is the weight (in g) of Cl2 liberated when 8.7 g of MnO2(s) is…

In the reaction, 2 Al(s) + 6 HCl(aq) 2 Al^3+ (aq) + 6 Cl^- (aq) + 3 H2 (g)

A + 2B AB2 36.0 g of A (Molar mass = 60 g mol^-1) and 56.0 g of B (Molar mass = 80 g mol^-1) are allowed to react. Which of the following…

The mass of benzanilide obtained from the benzoylation reaction of 5.8 g of aniline, if yield of product is 82, is g (nearest integer).…

x mg of pure HCl was used to make an aqueous solution. 25.0 mL of 0.1 M Ba(OH)2 solution is used when the HCl solution was titrated against…

A student has planned to prepare acetanilide from aniline using acetic anhydride. The student has started from 9.3 g of aniline. However,…

For the given reaction: CaCO3 + 2HCl - CaCl2 + H2O + CO2 If 90 g CaCO3 is added to 300 mL of HCl which contains 38.55 HCl by mass and has…

Some CO2 gas was kept in a sealed container at a pressure of 1 atm and at 273 K. This entire amount of CO2 gas was later passed through an…

What amount of bromine will be required to convert 2 g of phenol into 2, 4, 6-tribromophenol? (Given molar mass in g mol^-1 of C, H, O, Br…

During "S" estimation, 160 mg of an organic compound gives 466 mg of barium sulphate. The percentage of Sulphur in the given compound is %.…

0.01 mole of an organic compound (X) containing 10 hydrogen, on complete combustion, produced 0.9 g H2O. Molar mass of (X) is g mol^-1.

When 81.0 g of aluminium is allowed to react with 128.0 g of oxygen gas, the mass of aluminium oxide produced in grams is (nearest integer).

For a reaction, N2O5(g) 2NO2(g) + 12 O2(g) in a constant volume container, no products were present initially. The final pressure of the…

X g of benzoic acid on reaction with aqueous NaHCO3 release CO2 that occupied 11.2 L volume at STP. X is g.

Consider the following reaction occurring in the blast furnace. Fe3O4(s) + 4CO(g) 3Fe(l) + 4CO2(g) ‘x’ kg of iron is produced when 2.32…

The elemental composition of a compound is 54.2% C, 9.2% H, and 36.6% O. If the molar mass of the compound is 132 g/mol, the molecular…

The molarity of a 70 (mass/mass) aqueous solution of a monobasic acid (X) is: Given: Density of aqueous solution of X is 1.25 g/mL Molar…

0.1 M solution of KI reacts with excess of H2SO4 and KIO3, according to the equation: 5I^- + 6H^+ 3I2 + 3H2O Identify the correct…

In the Claisen-Schmidt reaction to prepare dibenzalacetone from 5.3 g benzaldehyde, a total of 3.51 g of product was obtained. The…

Consider the above reaction, what mass of CaCl2 will be formed if 250 mL of 0.76 M HCl reacts with 1000 g of CaCO3?

On complete combustion 1.0 g of an organic compound (X) gave 1.46 g of CO2 and 0.567 g of H2 O. The empirical formula mass of compound (X)…

0.5 g of an organic compound on combustion gave 1.46 g of an organic compound on combustion gave 1.46 g of CO2 and 0.9 g of H2O. The…

10 mL of 2 M NaOH solution is added to 20 mL of 1 M HCl solution kept in a beaker. Now, 10 mL of this mixture is poured into a volumetric…

Mass of magnesium required to produce 220 mL of hydrogen gas at STP on reaction with excess of dil. HCl is Given: Molar mass of Mg is 24 g…

X g of nitrobenzene on nitration gave 4.2 g of m-dinitrobenzene. X = g. (nearest integer) [Given: molar mass (in g mol^-1) C: 12, H: 1, O:…

Fortification of food with iron is done using FeSO4 7 H2 O. The mass in grams of the FeSO4 7 H2 O required to achieve 12 ppm of iron in 150…

The amount of calcium oxide produced on heating 150 kg limestone (75 pure) is kg. (Nearest integer) Given: Molar mass (in g mol^-1) of…

An organic compound weighing 500 mg, produced 220 mg of CO2 on complete combustion. The percentage composition of carbon in the compound is…

Butane reacts with oxygen to produce carbon dioxide and water following the equation given below: C4H10(g) + 132 O2(g) 4CO2(g) + 5H2O(l) If…

20 mL of sodium iodide solution gave 4.74 g silver iodide when treated with excess of silver nitrate solution. The molarity of the sodium…

Mass of methane required to produce 22 g of CO2 after complete combustion is g.

9.3 g of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the…

The amount of NaOH in 50 mL of a solution neutralized by 50 mL of 0.5 M oxalic acid is:

9.3 g of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the…

The density of a monobasic strong acid (Molar mass 24.2 g mol^-1) is 1.21 kg L^-1. The volume of its solution required for the complete…

Number of hydrogen atoms per molecule of a hydrocarbon A having 85.8 carbon is: Given: Molar mass of A = 84 g/mol

When a hydrocarbon A undergoes combustion in the presence of air, it requires 9.5 equivalents of oxygen and produces 3 equivalents of…

A 300 mL bottle of soft drink has 0.2 M CO2 dissolved in it. Assuming CO2 behaves as an ideal gas, the volume of the dissolved CO2 at STP…

The strength of 50 volume solution of hydrogen peroxide is..... g/L (Nearest integer). Given: Molar mass of H2O2 is 34 g mol^-1 Molar…

On complete combustion, 0.492 g of an organic compound gave 0.792 g of CO2. The % of carbon in the organic compound is (Nearest integer).…

Zinc reacts with hydrochloric acid to give hydrogen and zinc chloride. The volume of hydrogen gas produced at STP from the reaction of 11.5…

When a hydrocarbon A undergoes complete combustion it requires 11 equivalents of oxygen and produces 4 equivalents of water. What is the…

A sample of a metal oxide has formula M0.83O1.00. The metal M can exist in two oxidation states +2 and +3. In the sample of M0.83O1.00, the…

Assume carbon burns according to the following equation: 2C(s) + O2(g) 2CO(g) When 12 g of carbon is burnt in 48 g of oxygen, the volume of…

The volume of 0.02 M aqueous HBr required to neutralize 10.0 mL of 0.01 M aqueous Ba(OH)2 is (Assume complete neutralization):

0.5 g of an organic compound (X) with 60 carbon will produce 10^-1 g of CO2 on complete combustion.

Three bulbs are filled with CH4, CO2, and Ne as shown in the picture. The bulbs are connected through pipes of zero volume. When the…

In the following reactions, the total number of oxygen atoms in X and Y is: Na2O + H2O 2X Cl2O7 + H2O 2Y

For the given reaction, if the initial pressure is 450 mmHg and the pressure at time t is 720 mmHg at a constant temperature T and constant…

The ratio x/y on completion of the above reaction is

One mole of P4 reacts with 8 moles SOCl2 to give 4 moles of A, x mole of SO2 and 2 moles of B. A, B and x respectively are.

The volume of hydrogen liberated at STP by treating 2.4 g of magnesium with excess of hydrochloric acid is 10^-2 L. Provided that: Molar…

In the given reaction cycle

The mass of NH3 produced when 131.8 kg of cyclohexanecarbaldehyde undergoes Tollens test is kg. (Nearest Integer) Given: Molar Mass of C =…