Any buffer exists in this equilibrium

HA <=> $H^+ + A^-$
In a buffer, there is a large reservoir of both the undissociated acid (HA) and its conjugate base ( $A^-$ )

When a strong acid is added, it reacts with the large reservoir of the conjugate base ( $A^-$ ) forming a salt and water. Since this large reservoir of the conjugate base is used, the ph does not alter drastically, but instead resist the pH change.

8 0

3 years ago

HELP PLEASE WITH 1 QUESTION.

Nata [24]

The activity series goes top to bottom, most active to least active elements, going: Li, K, Ba, Sr, Ca, Na, Mg, Mn, Zn, Fe, Cd, Co, Ni, Sn, Pb, H, Cu, Ag, Hg, Au.

Thus, your list of metals would go from most reactive to least reactive: Li, K, Mg, Zn, Fe, Cu, Au

8 0

3 years ago

A radio technician measures the frequency of an AM radio transmitter. The frequency is 11979kHz. What is the frequency in megahe

Murljashka [212]

Answer:

11.979 MHz

Explanation:

$f = \text{11979 kHz} \times \dfrac{\text{1 MHz}}{\text{1000 kHz}} = \textbf{11.979 MHz}$

7 0

2 years ago