Chapter 5, Problem 5.4E

Identify which of the following are consistent with the law of conservation of matter. For those that are not, explain why they are not.

a. $\text{ZnS}\left(\text{s}\right)+{\text{O}}_2\left(\text{g}\right)\to \text{ZnO}\left(\text{s}\right)+{\text{SO}}_2\left(\text{g}\right)$

b. ${\text{Cl}}_2\left(\text{aq}\right)+2{\text{I}}^{-}\left(\text{aq}\right)\to {\text{I}}_2\left(\text{aq}\right)+2{\text{Cl}}^{-}\left(\text{aq}\right)$

c. $\begin{array}{l}\text{1}\text{.50}\text{g}\text{oxygen}+1.50\text{g}\text{carbon}\to 2.80\text{g}\text{carbon}\\ \text{monoxide}\end{array}$

d. ${\text{2C}}_2{\text{H}}_6\left(\text{g}\right)+7{\text{O}}_2\left(\text{g}\right)\to 4{\text{CO}}_{\text{2}}\left(\text{g}\right)+6{\text{H}}_{\text{2}}\text{O}\left(\text{g}\right)$