Question

Balance the following chemical reactions, which contribute to weathering of the iron-silicate minerals ferrosilite (FeSiO $_{3}$ ), fayalite $\left(\mathrm{Fe}_{2} \mathrm{SiO}_{4}\right),$ and greenalite $\left[\mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}\right]:$ a. $\operatorname{FeSiO}_{3}(s)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow \mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$. b. $\mathrm{Fe}_{2} \mathrm{SiO}_{4}(s)+\mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow$ $\mathrm{FeCO}_{3}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$. c. $\mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}(s)+\mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow$. $\mathrm{FeCO}_{3}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$.

          Balance the following chemical reactions, which contribute to weathering of the iron-silicate minerals ferrosilite (FeSiO $_{3}$ ), fayalite $\left(\mathrm{Fe}_{2} \mathrm{SiO}_{4}\right),$ and greenalite $\left[\mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}\right]:$
a. $\operatorname{FeSiO}_{3}(s)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow \mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$.
b. $\mathrm{Fe}_{2} \mathrm{SiO}_{4}(s)+\mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow$
$\mathrm{FeCO}_{3}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$.
c. $\mathrm{Fe}_{3} \mathrm{Si}_{2} \mathrm{O}_{5}(\mathrm{OH})_{4}(s)+\mathrm{CO}_{2}(g)+\mathrm{H}_{2} \mathrm{O}(\ell) \rightarrow$.
$\mathrm{FeCO}_{3}(s)+\mathrm{H}_{4} \mathrm{SiO}_{4}(a q)$.

Added by Heather O.

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