In this reaction, how many moles of ethane (C2H6) would react with 35 moles of 02? 2C2H6 + 702 + 6H20 + 4CO2 O A. 30 O
B.2 O
c. 10
D. 20

C = 10

Explanation:

Given data:

Moles of O₂ = 35 mol

Moles of C₂H₆ react = ?

Solution:

Chemical equation:

2C₂H₆  + 7O₂      →    6H₂O + 4CO₂

Now we will compare the moles of O₂ with C₂H₆.

                  O₂         :        C₂H₆

                   7          :          2

                35          :        2/7×35 = 10 mol

Option C is correct.

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.