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Natalija [7]
3 years ago
15

NaOH (aq) + HCl(aq) H2O + NaCl (aq)

Chemistry
1 answer:
yuradex [85]3 years ago
7 0

Answer:

The answer to your question is 0.005

Explanation:

Data

Volume of NaOH = 25 ml

[NaOH] = 0.2 M

moles of NaOH = ?

To solve this problem is not necessary to have the chemical reaction. Just use the formula of Molarity and solve it for moles.

Formula

Molarity = moles / volume

-Solve for moles

moles = Molarity x volume

-Convert volume to liters

          1000 ml ---------------- 1 l

              25 ml ---------------- x

               x = (25 x 1) / 1000

               x = 0.025 l

-Substitution

moles = 0.2 x 0.025

-Result

moles = 0.005

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Answer:

t = 7.58 * 10¹⁹ seconds

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First order rate constant is given as,

k =  (2.303 /t) log  [A₀] /[Aₙ]

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