Stoichiometry Help?

Posted on 2016-12-05 18:32:00 in Chemistry by JOSEN

1. According to the equation 2C2H2 + 5O2  4CO2 + 2H2O 
the number of moles of CO2 formed from 1.0 mole of C2H2 is 
A. 1.0 B. 2.0 C. 4.0 D. 8.0 
2. What is the maximum amount of iron that could be obtained from a mixture of 5.0 moles of Fe2O3 and 9.0 moles of carbon according to the equation below? 
Fe2O3 + 3C  2Fe + 3CO 
A. 5.0 mols B. 6.0 mols C. 9.0 mols D. 10.0 mols 
3. One method of producing oxygen in the laboratory is by the decomposition of potassium chlorate according to the equation 2KClO3  2KCl + 3O2 . What is the maximum amount of oxygen gas [MM = 32] which can be prepared from 5.00 grams of KClO3 [MM = 123] according to the equation above? 
A. 1.95 g B. 2.25 g C. 2.60 g D. 3.92 g. 
4. Hydrogen peroxide, H2O2 , reacts with permanganate (VII) ion, MnO4-, in basic solution according to the following equation. 
2MnO4-(aq) + 3H2O2(aq) ï‚®2MnO2(s) + 3O2(g) + 2OH-(aq) + 2H2O(l) 
How many moles of hydrogen peroxide would be needed to produce four moles of water? 
A. 2.0mol B. 4.0mol C. 6.0 mol D. 8.0mol 
5. Butane burns in oxygen according to the equation below. 
2C4H10(g) + 13O2(g)  8CO2(g) + 10H2O(l) 
If 11.6 g of butane is burned in 11.6 g of oxygen, which is the limiting reagent? 
A. butane C. oxygen 
B. water D. oxygen and butane

---

Answer Comment

No Answers Posted Yet.