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Rufina [12.5K]
3 years ago
11

What Is The Difference Between A Monatomic Ion And A Polyatomic Ion What is the difference between a polyatomic ion and a monato

mic ion?; Thanks
Chemistry
1 answer:
rosijanka [135]3 years ago
3 0

There is one atom in a Monoatomic Ion whereas Many in Polyatomic.

It's simple!!! you're Welcome:)

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[COF2]^2

Explanation:

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A 200.0 mL solution of 0.40 M ammonium chloride was titrated with 0.80 M sodium hydroxide. What was the pH of the solution after
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Answer:

9.25

Explanation:

Let first find the moles of NH_4Cl and NaOH

number of moles of NH_4Cl = 0.40  mol/L × 200 ×  10⁻³L

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number of moles of NaOH = 0.80  mol/L × 50 ×  10⁻³L

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The equation for the reaction is expressed as:

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Initial (M)              0.08            0.04                            0

Change (M)         - 0.04          -0.04                          + 0.04

Equilibrium (M)      0.04             0                                0.04

K_a*K_b = 10^{-14} \ at \ 25^0C

K_a = \frac{10^{-14}}{K_b}

K_a = \frac{10^{-14}}{1.76*10^{-5}}

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pK_a = 9.25

pH = pKa + \ log (\frac{HB}{HA} )   for buffer solutions

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pH = 9.25 + \ log (\frac{0.04 }{ 0.04} )

pH = 9.25

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