The pH of a 0.0100 M sodium benzoate solution is determined as 8.09.
<h3>What is pH of a solution?</h3>
The pH of a solution is a measure of hydrogen (H+) ion concentration, which is, in turn, a measure of acidity of the solution.
pH is can also be determined from pOH of the solution as shown below;
pH = 14 - pOH
<h3>
pH of the benzoate solution</h3>
let the hydroxyl concentration, OH = x
x²/M = kb
x²/0.01 = 1.5 x 10⁻¹⁰
x² = 1.5 x 10⁻¹²
x = √(1.5 x 10⁻¹²)
x = 1.2247 x 10⁻⁶
pOH = - log(OH⁻)
pOH = -log( 1.2247 x 10⁻⁶)
pOH = 5.91
<h3>Calculate the value of the pH</h3>
pH = 14 - 5.91
pH = 8.09
Thus, the pH of a 0.0100 M sodium benzoate solution is determined as 8.09.
Learn more about pH here: brainly.com/question/13557815
#SPJ1
Atomic mass silicon = 28.085 u
1 mol Si ---------------- 28.085 g
? ------------------------ 245 g
245 x 1 / 28.085 =><span> 8.72 mol</span>
<span>answer A</span>
Dull (not shiny)
poor conductors of heat and electricity (they are insulators)
weak and brittle (they easily break or shatter when solid)
Answer:
the increasing mass number
Answer:
1.4952 grams of sodium bicarbonate she would need to ingest to neutralize this much HCl.
Explanation:
Moles of hydrochloric acid = n
Volume of hydrochloric acid solution = 200.0 mL = 0.200 L
Molarity of the hydrochloric acid = 0.089 M
of HCL
According to reaction, 1 mole of HCl is neutralized by 1 mole of sodium bicarbonate.
Then 0.0178 moles of HCl wil be neutralized by :
of sodium bicarbonate
Mass of 0.0178 moles of sodium bicarbonate:
0.0178 mol × 72 g/mol = 1.4952 g
1.4952 grams of sodium bicarbonate she would need to ingest to neutralize this much HCl.
