What would you observe in the reaction of calcium with nitric acid

A 45.0 mL sample of 0.020 M acetic acid (HC2H3O2) is titrated with 0.020 M NaOH.? Determine the pH of the solution after adding

White raven [17]

Answer:

Explanation:

CH₃COOH + NaOH = CH₃COONa + H₂O .

.02M

CH₃COOH = CH₃COO⁻ + H⁺

C xC xC

Ka = xC . xC / C = x² C

1.8 x 10⁻⁵ = x² . .02

x² = 9 x 10⁻⁴

x = 3 x 10⁻²

= .03

concentration of H⁺ = xC = .03 . .02

= 6 x 10⁻⁴ M , volume = 45 x 10⁻³ L

moles of H⁺ = 6 X 10⁻⁴ x 45 x 10⁻³

= 270 x 10⁻⁷ moles

= 2.7 x 10⁻⁵ moles

concentration of NaOH = .0200 M , volume = 35 x 10⁻³ L

moles of Na OH = 2 X 10⁻² x 35 x 10⁻³

= 70 x 10⁻⁵ moles

=

NaOH is a strong base so it will dissociate fully .

there will be neutralisation reaction between the two .

Net NaOH remaining = (70 - 2.7 ) x 10⁻⁵ moles

= 67.3 x 10⁻⁵ moles of NaOH

Total volume = 45 + 35 = 80 x 10⁻³

concentration of NaOH after neutralisation.= 67.3 x 10⁻⁵ / 80 x 10⁻³ moles / L

= 8.4125 x 10⁻³ moles / L

OH⁻ = 8.4125 x 10⁻³

H⁺ = 10⁻¹⁴ / 8.4125 x 10⁻³

= 1.1887 x 10⁻¹²

pH = - log ( 1.1887 x 10⁻¹² )

= 12 - log 1.1887

= 12 - .075

= 11.925 .

4 0

3 years ago

Which compound could be added to hydroiodic acid to neutralize its acidic properties ?

Juli2301 [7.4K]

A base could be added so anything with a hydroxide or oxide group

E.g NaOH

5 0

3 years ago

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The energy that a log has is transformed when burned. How does the chemical energy of the log compare to the heat and light ener

Lubov Fominskaja [6]

I believe the correct answer from the choices listed above is the second option. The chemical energy of the log compare to the heat and light energy it is transformed into would be the <span>amount of chemical energy is less than the amount of heat and light energy. </span>

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3 years ago

How to do Lewis structure for Al?

Gnoma [55]

Notes:-