res Cursta A sealed vessel containing 0:0023mol of 2HI was then cooled rapidly under aqueous K2I when lodine disslove. The remaining solution werr titrated against 0.1molar Na₂S2O3, 6.4 cm² being needed to react completely with lodine I2 + 2S2O3-² ===== 2I- S4O6²- Calculate the number of moles of I2,H2 and HI at equilibrium and hence Kc taking the volume to be 1dm³​