Answer is: pH of solution is 3,02.
c(benzoic acid) = 0,03 mol/dm³.
c(sodium benzoate) = 0,02 mol/dm³.
pKa(benzoik acid) = 3,19.
pH = ?
Henderson–Hasselbalch equation for buffers: pH = pKa + log(cs/ck)
pH = 3,19 + log(0,02/0,03)
pH = 3,19 - 0,176
pH = 3,02.
cs - concentration of acid.
Answer:
Hg+2 + 2Cl- -> HgCl2
Explanation:
Message me for explanation.
Answer:
B
Explanation:
Valence electrons only involve in chemical bonding, since they are farthest from the nucleus. Hope this helps!
Answer:
Option 2:
The warmth of the spoon is conducted to the ice cream making it easier to scoop out.
Explanation:
Conduction refers to the transfer of heat from a hotter body to a cooler one, by virtue of physical contact between the two bodies. This is opposed to radiation, where there does not need to be any contact between the two bodies before heat con flow.
The warm spoon, once it has physical contact with the cool ice cream, it loses some of its heat to the ice cream, warming it up, making it easier to scoop up.
Answer:
SORRY HAVEN'T BEEN CHEMISTRY IN A WHILE FORGOT BUT GOOD LUCK!
Explanation: