A 40 × 10^-3 Mol L^-1 Aqueous Solution of Ca(OH)₂

question 14

Multiple Choice

A 4.0 × 10^-3 mol L^-1 aqueous solution of Ca(OH) ₂ at 25.0 °C has a pH of ________.

• A) 2.40
• B) 11.60
• C) 8.0 × 10^-3
• D) 2.10
• E) 11.90

---

Definitions:

Troposphere

The lowest layer of Earth's atmosphere, extending from the surface to about 8 to 15 kilometers high, where weather phenomena occur.

Ozone Layer

A stratospheric layer of ozone molecules that protects life on Earth by absorbing the majority of the sun's harmful ultraviolet radiation.

Troposphere

The lowest layer of Earth's atmosphere where weather occurs and where most aviation takes place.

Stratosphere

The layer of the Earth's atmosphere above the troposphere, extending from about 10 to 50 km above the Earth's surface, where ozone is concentrated.