Question $7$: If the $pH$ of $1$ liter carbonate buffer is $7\mathrm{.}0,$ what is molar ratio of $H_{2}C{O}_3$ and $HC{O}_3^{-}?)=(6\mathrm{.}37$ What component is more prominent?

a$.\frac{4\mathrm{.}27}{1}$ acid is more prominent

b$.\frac{0\mathrm{.}234}{1}$ acid is more prominent

c$.\frac{4\mathrm{.}27}{1}$ base is more prominent

d$.\frac{0\mathrm{.}234}{1}$ base is more prominent