7. aspirin has a pka of 3.4. what is the ratio of a to ha in: (a) the blood (ph 7.4) (b) the stomach (ph 1.4) =

Answer : a)

b)

Explanation : Given,

a) pH = 7.4

for aspirin = 3.4

Using Henderson Hesselbach equation :

Concentration of salt = ?

Concentration of acid = ?

Now put all the given values in this expression, we get:

b) pH = 1.4

Using Henderson Hesselbach equation :

Now put all the given values in this expression, we get:

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

can you attach the