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[edit] 22.


22a. HCl+NaOH→NaCl+H2O
2.0molHCl\frac{1molNaOH}{1molHCl}=2.0molNaOH
limiting reagent: HCl
22b. Zn+2HCl→ZnCl2+H2
2.5molZn\frac{2molHCl}{1molZn}=5.0molHCl
limiting reagent: Zn
22c. 2Fe(OH)3+2H2SO4→Fe2(SO4)3+6H2O
6.5molH_2SO_4\frac{2molFe(OH)_3}{3molH_2SO_4}=4.3molFe(OH)_3
limiting reagent: Fe(OH)3

[edit] 25.


25a. Cu+2AgNO3→Cu(NO3)2+2Ag
2.50molCu\frac{2molAgNO_3}{1molCu}=5.00molAgNO_3
limiting reagent: Cu
25b. 5.50molAgNO_3-2.50molCu\frac{2molAgNO_3}{1molCu}=0.50molAgNO_3
25c.
2.50molCu\frac{1molCu(NO_3)_2}{1molCu}=2.50molCu(NO_3)_2
2.50molCu\frac{2molAg}{1molCu}=5.00molAg
25d.
2.50molCu\frac{1molCu(NO_3)_2}{1molCu}\frac{161gCu(NO_3)_2}{1molCu(NO_3)_2}=403gCu(NO_3)_2
2.50molCu\frac{2molAg}{1molCu}\frac{108gAg}{1molAg}=540.gAg

[edit] 26.


26a. 3H2SO4+2Al(OH)3→Al2(SO4)3+6H2O
30.0gH_2SO_4\frac{1molH_2SO_4}{98.1gH_2SO_4}\frac{2molAl(OH)_3}{2molH_2SO_4}\frac{78.0gAl(OH)_3}{1molAl(OH)_3}=15.9gAl(OH)_3
limiting reagent: H2SO4
26b. 25.0gAl(OH)_3-30.0gH_2SO_4\frac{1molH_2SO_4}{98.1gH_2SO_4}\frac{2molAl(OH)_3}{3molH_2SO_4}\frac{78.0gAl(OH)_3}{1molAl(OH)_3}=9.1gAl(OH)_3
26c.
30.0gH_2SO_4\frac{1molH_2SO_4}{98.1gH_2SO_4}\frac{1molAl_2(SO_4)_3}{3molH_2SO_4}\frac{342gAl_2(SO_4)_3}{1molAl_2(SO_4)_3}=34.9gAl_2(SO_4)_3
30.0gH_2SO_4\frac{1molH_2SO_4}{98.1gH_2SO_4}\frac{6molH_2O}{3molH_2SO_4}\frac{18.0gH_2O}{1molH_2O}=11.0gH_2O

[edit] 28.


28a. \frac{15.0g}{20.0g}\frac{100%}{1}=75%
28b. (1.0g)(90.0%)\frac{1}{100%}=0.90g
28c. \frac{4.75g}{5.00g}\frac{100%}{1}=95%
28d. (3.45g)(48.0%)\frac{1}{100%}=1.66g

[edit] 29.


29. PCl3+Cl2→PCl5
73.7gPCl_3\frac{1molPCl_3}{138gPCl_3}\frac{1molPCl_5}{1molPCl_3}\frac{209gPCl_5}{1molPCl_5}(83.2%)\frac{1}{100%}=92.9gPCl_5

[edit] 30.


30.
4NH3+5O2→4NO+6H2O
2NO+O2→2NO2
3NO2+H2O→2HNO3+NO
5.00kgNH_3\frac{1000gNH_3}{1kgNH_3}\frac{1molNH_3}{17.0gNH_3}\frac{4molNO}{4molNH_3}(94.0%)\frac{1}{100%}*
\frac{2molNO_2}{2molNO}(94.0%)\frac{1}{100%}\frac{2molHNO_3}{3molNO_2}\frac{63.0gHNO_3}{1molHNO_3}(94.0%)\frac{1}{100}=10300gHNO_3