0.5 mole each of $H_{2}$S and S$O_{2}$ mixed together in a reaction flask, react according to equation :

cbse
conceptsofchemistry

#1

0.5 mole each of $H_{2}$S and S$O_{2}$ mixed together in a reaction flask, react according to equation :

Calculate the number of moles of ‘S’ formed.


#2

Now, 2 moles of ${{H}{2}}$S combine with 1 mole of S${{O}{2}}$ to give 3 moles of S.
1 mole of ${{H}{2}}$S combines with 0.5 mole of S${{O}{2}}$ to give 3/2 moles of S.
Therefore, 0.5 moles of ${{H}{2}}$S combines with 0.25 mole of S${{O}{2}}$ to give 3/2 x 0.5
= 0.75 moles of S.