Answer:
BARIUM HYDROXIDE IS THE COMPOUND
Answer is: pH of a buffer is 4.64.
ck(CH₃COOH) = 0.45 M.
cs(CH₃COONa) = 0.35 M.
Ka = 1.8·10⁻⁵.
<span>pKa = -logKa.
</span>pKa = -log(1.8·10⁻⁵) = 4.75.
<span>Henderson–Hasselbalch equation: pH = pKa + log(cs/ck).
</span>pH = 4.75 + log(0.35M/0.45M).
pH = 4.75 - 0.11.
pH = 4.64.
pH (potential of hydrogen) is a numeric
scale used to specify the acidity or basicity an aqueous solution.
Chemical properties
The process of changing into different substances is known as a chemical change and a substance exhibits its chemical properties during such a change.
Answer:
No
Explanation:
There is no possible physical way for there to be an object without the molecules moving. There is a temperature called <u><em>absolute zero</em></u>,* however, there will always be some form of heat to touch everything, so nothing will ever be "frozen solid."
- (*) By international agreement, absolute zero is defined as precisely; 0 K on the Kelvin scale, which is a thermodynamic (absolute) temperature scale; and –273.15 degrees Celsius on the Celsius scale.
