What Is the PH of a 0 A)222
B)2

question 77

Multiple Choice

What is the pH of a 0.500 mol L^-1 NH₃ solution that has K_b = 1.8 × 10^-5? The equation for the dissociation of NH₃ is below: $$\mathrm { NH } _ { 3 } ( a q ) + \mathrm { H } _ { 2 } \mathrm { O } ( l ) \rightleftharpoons \mathrm { NH } _ { 4 } + ( a q ) + \mathrm { OH } ^ { - } ( a q )$$

• A)2.22
• B)2.52
• C)11.48
• D)10.48

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Definitions:

Carbon Dioxide-rich Atmosphere

An atmosphere that contains a high concentration of carbon dioxide, affecting climate and living organisms.

Bird-like Hip

A type of pelvis structure found in some dinosaurs characterized by a forward-tilting pubis, similar to that of birds.

Mesozoic Era

A geological era that occurred between 252 and 66 million years ago, characterized by the dominance of dinosaurs.

Paleozoic

An era in the geologic time scale, occurring from about 541 million to 252 million years ago, noted for the early development of life on Earth.