Lab Assignment 7 - Acids and Bases

Which of the following statements sounds correct to you?

*You can pick any of the answers

A tomato has a proton concentration of 0.00006 M. How would you calculate the pH?

-log(6x10^-5)

Guess how many water molecules self-ionize in one liter of water!

0.0000001 moles

What results from a reaction of a base (NaOH) and hydronium ion (H3O+)?

2 H2O and Na+

What is the pH of water?

7

Based on what you have seen, which is the best definition for an acid?

Acids donate protons in aqueous solution

What precautions should you take when working with strong acids and bases?

Always wear goggles and gloves

What is water according to this definition?

An acid and a base

So what is the definition of a base?

Bases accept protons

What makes an acid acidic?

Chemical structure

Identify a water molecules and click on it.

Choose any of the molecules that are floating

What was transferred from the hydrochloric acid to the water molecule?

H+

Does the intake of acidic or alkaline foods affect the blood pH?

No, the blood pH is constant

Identify the acid and click on it.

Red one on the left (hydrochloric acid)

How would you categorize egg white?

Slightly basic

If you have a glass of pure water, without any acids or bases, how many hydronium ions (H3O+) do you expect?

The same number as OH-

What is the smallest pH possible?

There is no fixed minimum

Which unit is used to express the acidity of an acid or alkaline solution?

pH

How are the pOH and pH linked?

pH + pOH = 14

Create a formula to calculate the pH depending on the H+ concentration ([H+])!

pH=-log([H+])

What's the difference in concentration of hydronium ions between pH 1 and pH 4?

x 1000