Question

How many moles of hydrogen are needed to produce 13.78 mol of ethane?

Answer 1

Ethane is an alkane. Methane is also an alkane and is considered to be the simplest alkane. The difference is ethane has only 2 carbon. That carbon has 6 hydrogen attached to it. So what we do is we multiply the moles of ethane by the number of hydrogen (by dimension analysis) resulting to 82.68 moles H.

Answer 2

This is an incomplete question, here is a complete question.

The following balanced equation shows the formation of ethane (C₂H₆).

$C_2H_2+2H_2\rightarrow C_2H_6$

How many moles of hydrogen are needed to produce 13.78 mol of ethane?

1) 3.445 mol

2) 6.890 mol

3) 27.56 mol

4) 55.12 mol

Answer : The number of moles of hydrogen needed are, (3) 27.56 mol

Explanation : Given,

Moles of ethane = 13.78 mol

The given balanced chemical reaction is:

$C_2H_2+2H_2\rightarrow C_2H_6$

From the balanced chemical reaction we conclude that,

As, 1 mole of ethane produced from 2 moles of hydrogen

So, 13.78 mole of ethane produced from $13.78\times 2=27.56$ moles of hydrogen

Thus, the number of moles of hydrogen needed are, 27.56 mol