10mM

Tris buffer or

20mM

Tris buffer\ The

20mM

Tris buffer because its

pK

is closer to the desired

pH

.\ The

20mM

Tris buffer because lower a concentration provides greater buffering capacity.\ The

20mM

Tris buffer because a higher concentration provides greater buffering capacity.\ The

10mM

Trisbuffer because its

pK

is closer to the desired

pH

.\ Attempts: 0 of\ Part 3\

10mM

boric acid or

10mM

sodium borate.\ The

10mM

acetic acid solution because boric acid is a weak acid.\ The

10mM

sodium borate solution because sodium borate is a weak base.\ Solutions containing only

10mM

boric acid or sodium borate cannot serve as buffers.\ The

10mM

boric acid and sodium borate solutions have equal buffering capacity.

10mM Tris buffer or 20mM Tris buffer The 20mM Tris buffer because its pK is closer to the desired pH. The 20mM Tris buffer because lower a concentration provides greater buffering capacity. The 20mM Tris buffer because a higher concentration provides greater buffering capacity. The 10mM Trisbuffer because its pK is closer to the desired pH. Attempts: 0 of Part 3 10mM boric acid or 10mM sodium borate. The 10mM acetic acid solution because boric acid is a weak acid. The 10mM sodium borate solution because sodium borate is a weak base. Solutions containing only 10mM boric acid or sodium borate cannot serve as buffers. The 10mM boric acid and sodium borate solutions have equal buffering capacity