Question

Calculate the mass of the product that would be formed when 2000cm3 of hydrogen chloride gas reacts completely with excess ammonia gas (H=1,O;N=14.0,C1=35.5,one mole of gas occupied 24L at room temperature and pressure)

Answer 1

Answer:

mole occupies 22.4L volume

∴ moles of NH3 present= 22.467.2=3

(ii) 1 mole of NH3 reacts with 1 mole of HCl to give 1 mole of NH4Cl. Here only 1 mole of HCl & 3moles of NH3 are present. Hence, 1 mole of NH4Clis produced.

Mass of NH4Cl produced= 1× Molecular mass

                                              =1×(14+4×1+35.5)

                                              =53.5g

(iii) Here NH3 is present in excess than what is required to react with 1 mole HCl. Hence 3−1=2moles of NH3 will remain after completion of the reaction.

(iv) Chemical reaction involved is:

NH3+HCl⟶NH4Cl .