Question

An equilibrium mixture of the solid and the two gases in a 1.00 l flask at 673 k contains 0.204 mol nh4i, 8.37e-3 m nh3 and 8.37e-3 m hi. If the concentration of hi(g) is suddenly increased to 1.39e-2 m, what will be the concentrations of the two gases once equilibrium has been reestablished?

Answer 1

what is the volume of water to be added to 200 ml of 18 molar H2 S o4 solution to get 18 1.8 molar H2 S o4 solution?

98% by weight means 98 gm H2SO4 in 100 gm solution or 98 g H2SO4 in 2 g water.

5.5 [0.1×1000/ 18] So the required volume is 5.5 ml.