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docker41 [41]
2 years ago
14

What volume of 0.20 M solution of HCI will be required to neutralize 10.0 mL of a 0.60 M

Chemistry
1 answer:
tatyana61 [14]2 years ago
4 0

Answer:

30ml

Explanation:

Chcl.Vhvl=Ckoh.Vkoh

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All of the following pairs of ions are isoelectronic except which one?
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2 years ago
What is the pH of 0.10 M NaF(aq). The Ka of HF is 6.8 x 10-4
dsp73

<u>Given information:</u>

Concentration of NaF = 0.10 M

Ka of HF = 6.8*10⁻⁴

<u>To determine:</u>

pH of 0.1 M NaF

<u>Explanation:</u>

NaF (aq) ↔ Na+ (aq) + F-(aq)

[Na+] = [F-] = 0.10 M

F- will then react with water in the solution as follows:

F- + H2O ↔ HF + OH-

Kb = [OH-][HF]/[F-]

Kw/Ka = [OH-][HF]/[F-]

At equilibrium: [OH-]=[HF] = x and [F-] = 0.1 - x

10⁻¹⁴/6.8*10⁻⁴ = x²/0.1-x

x = [OH-] = 1.21*10⁻⁶ M

pOH = -log[OH-] = -log[1.21*10⁻⁶] = 5.92

pH = 14 - pOH = 14-5.92 = 8.08

Ans: (b)

pH of 0.10 M NaF is 8.08

6 0
2 years ago
Which classification best describes oxygen gas? a element b compound c solution d heterogeneous mixture
NNADVOKAT [17]

Answer:

oxygen is an element because it is a pure substance which cannot be split into simpler substances by chemical means

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What is the reduction half equation of Fe(s)+ 2 HC2H3O2(aq) → Fe(C2H3O2)2(aq) + H2(g)
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Answer:

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Explanation:

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2 H⁺ + 2e = H₂    ( reduction )

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3 years ago
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