QUESTION 1 1 points S Saved What is the concentration of H2S in a saturated solution of H2S? Not enough information in the lab manual to decide. Smaller than 1.0 x 10-8 1.0 M O Greater than 6 M 1.3 M 0.10 M QUESTION 2 4 points Save Answer Match each type of ion to the method used to separate it Silver ions A. Precipitated by adding HCl. B. Precipitated using H2S in a very acidic sol C. Precipitated using H2S in a slightly basic solution. D. Precipitated by adding ammonium carbonate. E. Precipitated by adding sodium sulfide in a weakly basic uion Copper (1) ions Zinc ions Calcium ions solution. Solution Ans 1 : 0.10 M The concentration of H2S in a saturated solution of H2S is 0.10 M. The solubility of H2S is 0.00016 g / 100 g So the concentration = number of moles / volume of solution in L which comes approximately 0.10 M .