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18 Nov 2019
Need 4,5, and 6 answered
A solution contains 0.036 M Cu^2+ and 0.044 M Fe^2+. A containing sulfide ions is added to selectively precipitate one of the metal ions from the solution. K_sp, CuS = 1.3 times 10^-38, K_sp, FeS = 6.3 times 10^-18. (a) At what concentration of sulfide ion will a precipitate begin to form? (b) What is the identity of the precipitate? Determine the solubility (g/L) of Fe(OH)_2 in pure water. K_sp, Fe(OH)_2 = 4.87 times 10^-17 Will the entropy change of the system be positive, negative, or zero in each of the following chemical reactions? (a) PCl_3 (g) + Cl_2 (g) rightarrow PCl_5 (g) (b) CaSO_3 (s) rightarrow SO_2 (g) + CaO_(s) (c) CO_2 (g) + H_2 O_(l) rightarrow H_2 CO_3 (aq) (d) CaO_(s) + H_2 O_(l) rightarrow Ca(OH)_2 (s)
Need 4,5, and 6 answered
A solution contains 0.036 M Cu^2+ and 0.044 M Fe^2+. A containing sulfide ions is added to selectively precipitate one of the metal ions from the solution. K_sp, CuS = 1.3 times 10^-38, K_sp, FeS = 6.3 times 10^-18. (a) At what concentration of sulfide ion will a precipitate begin to form? (b) What is the identity of the precipitate? Determine the solubility (g/L) of Fe(OH)_2 in pure water. K_sp, Fe(OH)_2 = 4.87 times 10^-17 Will the entropy change of the system be positive, negative, or zero in each of the following chemical reactions? (a) PCl_3 (g) + Cl_2 (g) rightarrow PCl_5 (g) (b) CaSO_3 (s) rightarrow SO_2 (g) + CaO_(s) (c) CO_2 (g) + H_2 O_(l) rightarrow H_2 CO_3 (aq) (d) CaO_(s) + H_2 O_(l) rightarrow Ca(OH)_2 (s)
Collen VonLv2
26 Jul 2019