91影视

Here we will name the products obtained in Figure 27-6 when calcium salicylate monohydrate is heated to 550鈦癈 and 1000鈦癈. Also, we will calculate the mass expected to remain when 0.6356 g of calcium salicylate monohydrate is heated to 550鈦癈 and 1000鈦癈.

${\mathrm{CaC}}_{14}{\mathrm{H}}_{10}{\mathrm{O}}_6脳{\mathrm{H}}_2\mathrm{O}$calcium salicylate monohydrate$鈫�\mathrm{M}=332.32\mathrm{g}/\mathrm{mol}$

• CaCO₃ calcium carbonate$鈫�\mathrm{M}=100.09\mathrm{g}/\mathrm{molat}{550}^{鈭�}\mathrm{C}$
• CaO calcium oxide$鈫�\mathrm{M}=56.08\mathrm{g}/\mathrm{molat}{1000}^{鈭�}\mathrm{C}$

${\mathrm{CaC}}_{14}{\mathrm{H}}_{10}{\mathrm{O}}_6脳{\mathrm{H}}_2\mathrm{O}$is converted to CaCO₃ and from 1 mol of${\mathrm{CaC}}_{14}{\mathrm{H}}_{10}{\mathrm{O}}_6脳{\mathrm{H}}_2\mathrm{O}$ there would be 100.09 grams of CaCO₃ produced and 56.08 grams of CaO.

Expected mass at 550鈦癈 would be:

role="math" localid="1663662310806" $$\begin{gathered} {\mathrm{m}}_{550}=\frac{\mathrm{M}\left({\mathrm{CaCO}}_3\right)}{\mathrm{M}({\mathrm{CaC}}_{14}{\mathrm{H}}_{10}{\mathrm{O}}_6脳{\mathrm{H}}_2\mathrm{O})}脳\mathrm{m}({\mathrm{CaC}}_{14}{\mathrm{H}}_{10}{\mathrm{O}}_6脳{\mathrm{H}}_2\mathrm{O}) \\ {\mathrm{m}}_{550}=\frac{100.09}{332.32}脳0.6356\mathrm{g} \\ {\mathrm{m}}_{550}=0.1914\mathrm{g} \end{gathered}$$

$$\begin{gathered} {\mathrm{m}}_{1000}=\frac{\mathrm{M}\left(\mathrm{CaO}\right)}{\mathrm{M}({\mathrm{CaC}}_{14}{\mathrm{H}}_{10}{\mathrm{O}}_6脳{\mathrm{H}}_2\mathrm{O})}脳\mathrm{m}({\mathrm{CaC}}_{14}{\mathrm{H}}_{10}{\mathrm{O}}_6脳{\mathrm{H}}_2\mathrm{O}) \\ {\mathrm{m}}_{1000}=\frac{56.08}{332.32}脳0.6356\mathrm{g} \\ {\mathrm{m}}_{1000}=0.1073\mathrm{g} \end{gathered}$$