If anyone could help me with these two problems, I would really appreciate it. Thanks!
Find the number of grams of Zinc needed to produce 6.0 grams of hydrogen, H2 from the following, Zn + 2HCl → ZnCl2 + H2
and
Given the following reaction, would the reaction rate increase or decrease if the temperature decreased; 16kcal + PCl5→ PCl3 + Cl2.
Find the number of grams of Zinc needed to produce 6.0 grams of hydrogen, H2 from the following, Zn + 2HCl → ZnCl2 + H2
and
Given the following reaction, would the reaction rate increase or decrease if the temperature decreased; 16kcal + PCl5→ PCl3 + Cl2.
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Zn + 2HCl → ZnCl2 + H2
1 mol Zn produces 1 mol H2
Molar mass of H2 = 2.00 g/mol; molar mass of Zn = 65.38 g/mol.
Convert g H2 ---> mol H2 ---> mol Zn ---> g Zn
6.0 g H2 x (1 mol H2 / 2.00 g H2) x (1 mol Zn / 1 mol H2) x (65.38 g Zn / 1 mol Zn) = 196 g Zn
PCl5 + 16 kcal -----> PCl3 + Cl2
Adding heat causes the forward reaction to occur (endothermic), so increasing the temperature will increase the rate of the forward reaction.
1 mol Zn produces 1 mol H2
Molar mass of H2 = 2.00 g/mol; molar mass of Zn = 65.38 g/mol.
Convert g H2 ---> mol H2 ---> mol Zn ---> g Zn
6.0 g H2 x (1 mol H2 / 2.00 g H2) x (1 mol Zn / 1 mol H2) x (65.38 g Zn / 1 mol Zn) = 196 g Zn
PCl5 + 16 kcal -----> PCl3 + Cl2
Adding heat causes the forward reaction to occur (endothermic), so increasing the temperature will increase the rate of the forward reaction.