Sulfur dioxide, SO2, is used as a preservative in wine. The sulfur dioxide content of a wine can be found by titration. A chemist found that 25.0 cm
of a sample of wine reacted with exactly 15.00 cm of 0.0010 mol/dm² aqueous iodine, 12(aq).
The equation for the reaction is
SO2(aq) + I2aq) + 2H2O(l) + SO42 (aq) + 21 (aq) + 4H+(aq)
1
(a) Calculate the amount, in moles, of iodine in 15.00 cm? of a 0.0010 mol/dm solution.
(2)

Achemical equilibrium between gaseous reactants and products is shown. n2(g) + 3h2(g) ⇌ 2nh3(g) how will the reaction be affected if the pressure on the system is increased? it will shift toward the reactant side as there is lower pressure on the reactant side. it will shift toward the product side as there is higher pressure on the product side. it will shift toward the reactant side as there are a greater number of moles of gas on the reactant side. it will shift toward the product side as there are a fewer number of moles of gas on the product side.