Note the stoichiometry of the balanced equations shows us that HCl and KOH react in a 1:1 mole ratio. So, let us find moles of HCl and moles of KOH that are present:

moles HCl = 250.0 ml x 1 L/1000 ml x 0.25 mol/L = 0.06250 moles HCl

moles KOH = 200.0 ml x 1 L/1000 ml x 0.40 mol/L = 0.0800 moles KOH

You can see that there are more moles of KOH than there are of HCl, meaning that KOH is in excess and after neutralizing all of the HCl, the solution will be left with excess KOH making the pH > 7 = BASIC

4 0

2 years ago

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

mamaluj [8]

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.

4 0

3 years ago

Read 2 more answers

Balance the following Equation Show your work.

7nadin3 [17]

Answer:

1) alr balanced

2) 2 2 1

3) 2 1 1 2

4) 2 3 2

5) 2 1 2 1

6) 1 6 2 3

7) 2 2 1

8) 1 2 1 2

9) 2 5 4 6

10) 3 1 2

3 0

2 years ago