Acids and Bases and pH

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic
• slightly acidic
• strongly basic
• slightly basic

The table shows the pH of several solutions. Which solution is the most acidic?

• vinegar

• milk

• water

• bleach

Zn(OH)₂ is an example of a...

• acid

• base

• salt

• water

Tags

NGSS.HS-PS1-1

H₃PO₄ is an example of a ...

• acid

• base

• salt

• non-electrolyte

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to acidic?

• lemon juice, milk, baking soda, bleach

• bleach, baking soda, milk, lemon juice

• milk, lemon juice, baking soda, bleach

• baking soda, bleach, lemon juice, milk

If a solution has a pH of 1.5, then litmus would turn

• red

• purple

• blue

• yellow

A sugar solution has a pH of 7. This means the sugar solution is:

• acidic

• basic

• neutral

Which of these is a property of acidic solutions?

• they taste sour

• they feel slippery

• they are in many cleaning products

• they taste bitter

An unknown substance was tested and found to have an extremely high concentration of hydroxide ions, OH^-. and very low concentration of hydronium ions, H₃O⁺. Which pH would make the most sense?

• pH = 2

• pH = 6

• pH = 8

• pH = 12

What is the fomula of carbonic acid?

• H₂CO₃

• H₂CrO₄

• H₂C₂O₄

• HCO₃

Tags

NGSS.MS-PS1-1