Answer:
A mixture of 100. mL of 0.1 M HC3H5O3 and 50. mL of NaOH
Explanation:
The pH of a buffer solution is calculated using following relation
Thus the pH of buffer solution will be near to the pKa of the acid used in making the buffer solution.
The pKa value of HC₃H₅O₃ acid is more closer to required pH = 4 than CH₃NH₃⁺ acid.
pKa = -log [Ka]
For HC₃H₅O₃
pKa = 3.1
For CH₃NH₃⁺
pKa = 10.64
pKb = 14-10.64 = 3.36 [Thus the pKb of this acid is also near to required pH value)
A mixture of 100. mL of 0.1 M HC3H5O3 and 50. mL of NaOH
Half of the acid will get neutralized by the given base and thus will result in equal concentration of both the weak acid and the salt making the pH just equal to the pKa value.
I think its b but hope this helps :)
Answer:
NH4+ will be ammonium, NH3 is ammonia which is the conjugate base of ammonium.
Explanation:
SeO₄²⁻ is state the hybridization of the central atom, and give the ideal bond angle(s).
<h3>What is potassium hydroxide?</h3>
Potassium hydroxide, also known as lye, is a chemical substance with the formula KOH. It is also known as caustic potash and is available in a variety of forms such as pellets, flakes, and powders. It has a variety of chemical, industrial, and manufacturing applications.
Potassium hydroxide, sometimes known as caustic potash, is an inorganic chemical with the formula KOH. KOH is a classic strong base, along with sodium hydroxide. It has numerous industrial and specialty applications, the majority of which take advantage of its caustic nature and acid reactivity.
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