3 years ago

Which acid-base buffer is most crucial to maintaining homeostasis within the human body?

Chemistry

2 answers:

Andrei [34K]3 years ago

4 0

Answer:

e 2020 a

Explanation:

Igoryamba3 years ago

3 0

it is a i believe: Bicarbonate and carbonic acid (A)

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A 0.0884 M solution of a weak base has a pH of 11.79. What is the identity of the weak base?Weak Base KbEthylamine (CH3CH2NH2) 4

iVinArrow [24]

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The base must be ethylamine.

Explanation:

The pH of solution of a weak base gives us an idea about the Kb of the base.

$pOH=14-pH$

$pOH=14-11.79=2.21$

$pOH=-log[OH^{-}]$

$[OH^{-}]=0.0062M$

The relation between Kb and hydroxide ion concentration is:

$Kb=\frac{[OH^{-}]^{2}}{[base]}$

$Kb=\frac{0.0062X0.0062}{0.0884}=4.34X10^{-4}$

Thus the weak base must be ethylamine.

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3 years ago