An equilibrium may be described by the equation below. $P(\mathrm{aq}) + Q(\mathrm{aq}) \rightleftharpoons 2R(\mathrm{aq}) + S(\mathrm{aq})$ For one mixture with a volume of $1.0\,\mathrm{dm}^3$, the equilibrium concentration of Q is $10\,\mathrm{mol\,dm}^{-3}$. Determine the new equilibrium concentration of Q after $5.0\,\mathrm{mol}$ of pure Q has been completely dissolved into the mixture.
- A$15\,\mathrm{mol\,dm}^{-3}$
- Bbetween $10\,\mathrm{mol\,dm}^{-3}$ and $15\,\mathrm{mol\,dm}^{-3}$
- C$10\,\mathrm{mol\,dm}^{-3}$
- Dbetween $5.0\,\mathrm{mol\,dm}^{-3}$ and $10\,\mathrm{mol\,dm}^{-3}$