CH30 – The Curve

Date

• Tuesday, March 27th

Recap – pH

• main ideas
• homework questions?

New Idea – pH after a Reaction

• pH of a solution after a reaction
• perform standard calculations
• determine leftover amount of [H+] or [OH-]
• calculate pH
• NOTE: strong acid / strong base

Example

• 15.0 mL of 0.125-M HCl
• 3.0 mL of 0.113-M NaOH added
• determine pH afterwards
• Textbook support: p. 727-730
• Extra support here [LINK]

Extending

• calculate pH of solution for various amounts added
• 0.0 mL, 3.0 mL, 6.0 mL … 27.0 mL, 30.0 mL
• plot graph: x-axis = volume NaOH added, y-axis = pH

Homework

• Finish activity
• One per student
• Supporting calculations on separate page

Virtual Lab

• We will be conducting the virtual lab
• Be sure it is installed properly