Assignment:
Q1) 5 F2 + 2 NH3 -----> N2F4 + 6 HF
a) What is the mole-to-mole ratio needed to find moles of NH3 , if moles of F2 are known
b) If you start with 25 g of F2 , how many moles is this ?
c) Now using info from b, how many moles of NH3 will be needed ?
d) And how many moles of HF will be produced ?
e) Using the info above, how many grams of HF will be produced ?
f) How many grams of N2F4 can be produced from those 25 g of F2 ?
Q2) Identify the limiting reactant
a) 2 Al + 3 Cl2 -----> 2 AlCl3
1.4 mol 5.3 mol
b) 2 H2+ O2 -----> 2H2O
6.4 mol 3.4 mol
c) P4O10+ 6 H2O -----> 4 H3PO4
0.48 mol 1.52 mol
Q3) Na + N2 ---- > Na3N Balance this reaction
How many grams of product can be produced from 10 g of Na ?
Q4) 2 N2O 5 -----> 4 NO2 + O2
When 25.0 g of N2O 5 is allowed is decompose. it is found that 10.0 g of NO2 forms. What is the percent yield ?
Q5) During WWI, the substance phosphine, PH3, was used a poisonous gas against the allied troops in their trenches.
Na3P + H2O ------ > PH3 + NaOH
Balance the reaction
What is the theoretical yield of PH3 when 150 g of Na3P is mixed with 250 grams of water? If the actual yield is 30 g, what is the % yield?
Provide complete and step by step solution for the question and show calculations and use formulas.