Catalyst

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# Catalyst - PowerPoint PPT Presentation

Catalyst. 1. Orange juice is strongly acidic. What pH could it have? 2. I have a solution that has a pH of 6. Is it acidic, basic or neutral ? 3. Calculate the pH of a 0.1 M solution of HCl. End. Lecture 5.4 – Titration Lab. What is the metric system?. I. SI System.

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Presentation Transcript
Catalyst

1. Orange juice is strongly acidic. What pH could it have?

2. I have a solution that has a pH of 6. Is it acidic, basic or neutral?

3. Calculate the pH of a 0.1 M solution of HCl

End

I. SI System
• In science, we use the SI or metric system
• Each unit in the SI system is a factor of 10 different another unit
• Allows us to very easily interconvert
II. Prefixes and the SI System
• In the SI system, the prefix tells us the factor of 10 we are working with.
• Choose the prefix represents the quantity most effectively
How to Remember the Order

King Henry Died By Drinking Chocolate Milk

Largest Unit at Top of Staircase

Smallest Unit at Bottom of Staircase

kilo-

hecto-

deca-

Base

deci-

centi-

milli-

kilo-

hecto-

deca-

20 g

Base

deci-

centi-

Convert 20 g to kg

milli-

105 kL

kilo-

hecto-

deca-

Base

deci-

centi-

Convert 105 kL to mL

milli-

105 kL

105

0 0 0 0 0 0

105 kL = 105,000,000 mL

Table Talk
• Complete the following conversions
• 16 g = __________ cg (centigrams)
• 40 km = ________ m
• 13 dg (decigrams) = ________ Dg (decagrams)
• Annotate with any and all questions

Burets are read to the hundredths place. You need to estimate the final digit

Note on Burets
• Cost of a buret = \$130 EACH
• I will hold you personally responsible for paying this cost if it breaks.
Work Time
• Work on rough drafts of discussion questions
• Needs to be 3 paragraphs!
Exit Slip

1. 0.0155 L sample of 0.215 M KOH solution was titrated into 0.0250 L of HCl at which point the equivalence point was reached. What is the concentration of the HCl?

Learning Log Assessment
• Rate yourself 1 – 4 on 5.6
Closing Time
• Unit 5Test next Mon/Tues
• Rough draft of lab report due for Kool-Aid lab due