For the Reaction TlSCN(s) Tl⁺(aq)+ SCN^-(aq),K_c =
at $\circ$

For the reaction TlSCN(s) Tl⁺(aq) + SCN^-(aq) ,K_c =
At 25 ^$\circ$ C.Which of the following concerning a 125 mL solution containing
M Tl⁺,
M SCN^- and a large excess of TlSCN(s) is/are correct?
1) The mixture is at equilibrium.
2) Additional TlSCN(s) must precipitate to attain equilibrium.
3) The reaction quotient (Q) is greater than one.

A) 1 only
B) 2 only
C) 3 only
D) 1 and 3
E) 2 and 3