What is the hydronium concentration of a 0.3 M solution of NaCN? The equilibrium constant reaction (Kc) for the reaction

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What is the hydronium concentration of a 0.3 M solution ofNaCN?
The equilibrium constant reaction (Kc) forthe reaction below is 0.12. 2 SO3(g) 2 SO2(g) +O2(g)If a flask is filled with 0.1 M SO3, 0.08 MSO2, and 0.16 M O2, predict the direction ofthe equilibrium as the reaction is reaching equilibrium byusing Q, the reaction quotient.
Select one:
a.Forward because Q > K.
b.Forward because Q < K.
c.Reverse because Q < K.
d.Reverse because Q > K.
e.The reaction is at equilibriumbecause Q = K.
What is the effect ofadding carbon on the system described below?
2C(s) + O2(g) ↔ 2CO(g)
Select one:
a.Shifts towards reactants
b.Shifts towardsproducts
c.remainsunchanged