Question

Calcium carbonate reacts with aqueous HCl to give CaCl2 and CO2 according to the reaction given below: CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l) What mass of CaCl2 will be formed when 250 mL of 0.76 M HCl reacts with 1000 g of CaCO3? Name the limiting reagent. Calculate the number of moles of CaCl2 formed in the reaction.

The mass of one mole of a substance in grams is called its molar mass. the molar mass in grams is numerically equal to atomic molecular/formula mass in u. An empirical formula represents the simplest whole number ratio of various atoms present in a compound, whereas, the molecular formula shows the exact number of different types of atoms present in a molecule of a compound. If the mass per cent of various elements present in a compound is known, its empirical formula can be determined. Molecular formula can further be obtained if the molar mass is known. Many a time, reactions are carried out with the Amounts of reactants that are different than The amounts as required by a balanced chemical reaction. The reactant which is present in the least amount gets consumed after sometime and after that further reaction does not take place whatever be the amount of the other reactant. Hence, the reactant, which gets consumed first, limits the amount of product formed and is, therefore, called the limiting reagent.

Dinitrogen (2kg) and dihydrogen (1kg) react with each other to produce ammonia according to the following chemical equation: N2 (g) + 3H2(g) ——> 2NH3 (g) (i) Will any of the two reactants remain unreacted? (ii) If yes, which one and what would be its mass?

In a reaction A + B2 → AB2 Identify the limiting reagent, if any, in the following reaction mixtures. i. 300 atoms of A + 200 molecules of B ii. 2 mol of A + 3 mol of B iii. 100 atoms of A + 100 molecules of B iv. 5 mol of A + 2.5 mol of B v. 2.5 mol of A + 5 mol of B