Aqueous Reactions Unit

Hi...Classmates^_^

Yup.. I'm your scribe for today's class...Let's get started

Today, Mrs. Kozoriz corrected page 6 and 7 from the booklet the one that assign as to do for homework yesterday

"Calculating an Unknown Concentration"

Page 6...

Calculate the concentration of hydrochloric acid, if 25.00 mL is just neutralized by 40.00 mL of a 0.150 mol./L sodium hydroxide solution.

Solution...

Step 1: Write the balanced neutralization reaction.

Step 2: Calculate the numbers of moles of sodium hydroxide

moles = Concentration x Volume = C x V

Step 3: Calculate the moles of hydrochloric acid used.

Step 4: Calculate the concentration of the HCl

C = n/V

"Calculating Volume Needed to Neutralize"

Page 7...

What volume of a 0.250 mol./L solution of carbonic acid is needed to neutralize 30.0 g of sodium hydroxide?

Solution...

Step 1: Write the balanced neutralization reaction.

Step 2: Determine the number of moles of base

Step 3: Calculate the moles of needed to neutralize the base.

Step 4: Calculate the volume of required

V = n/C

Mrs. Kozoriz also gave us a worksheet to work on and this have to be hand in by TUESDAY!

Reminder: Don't forget to answer {PROBLEMS Page 9 (1 - 9) on our booklet}

Sayonara (bye) =) .......next scribe yicong...^_^