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Lapatulllka [165]

3 years ago

6

What is a polyprotic buffer?

1 answer:

coldgirl [10]3 years ago

3 0

Buffers - mixtures of conjugate acid and conjugate base at ±1 pH unit from pH = pKa. Resistant to changes in pH in response to small additions of H+ or OH-. ... Polyprotic acids - dissociation of each H+ can be treated separately if the pKa values are different

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The Transition Elements can be divided into two types. List each type.

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Determine the mass of CO2 gas produced when 8.24 g of NaHCO3 is added to a solution that contains 4.41 g of HCl.

hjlf

The mass of CO₂ gas = 4.312 g

<h3>Further explanation</h3>

Reaction

NaHCO₃ (s) + HCl (aq) → NaCl (aq) + H₂O (aq) + CO₂ (g)

Find limiting reactant

mol NaHCO₃

$\tt \dfrac{8.24}{84,007 }=0.098$

mol HCl

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Limiting reactant : NaHCO₃ (smaller)

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mass CO₂ :

$\tt 0.098\times 44=4.312~g$

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