3 years ago

What is Ka for HCN(aq) H+(aq)+CN-(aq)?

Chemistry

1 answer:

Ierofanga [76]3 years ago

7 0

HCN is a weak acid, with A Ka = 4.0 x 10-10.

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A sample of He gas (3.0 L) at 5.6 atm and 25°C was combined with 4.5 L of Ne gas at 3.6 atm and 25°C at constant temperature in

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Answer:

3.6667

Explanation:

For helium gas:

Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

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${5.6}\times {3.0}={P_2}\times {9.0} atm$

${P_2}=\frac {{5.6}\times {3.0}}{9.0} atm$

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For Neon gas:

Using Boyle's law

${P_1}\times {V_1}={P_2}\times {V_2}$

Given ,

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V₂ = 9.0 L

P₁ = 3.6 atm

P₂ = ?

Using above equation as:

${P_1}\times {V_1}={P_2}\times {V_2}$

${3.6}\times {4.5}={P_2}\times {9.0} atm$

${P_2}=\frac {{3.6}\times {4.5}}{9.0} atm$

${P_1}=1.8\ atm$

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Explanation: Please see attachment for explanation

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The amino acid isoleucine has pKa values of 2.32 (–COOH) and 9.76 (–NH3+). What is the predominant form of the amino acid at pH

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Answer:

PI = 6.04

In the attached figure are the missing hydrogen atoms

Explanation:

Given both pk, the isoelectric point will be equal to:

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3 years ago

What is Ka for HCN(aq) H+(aq)+CN-(aq)?​

What is Ka for HCN(aq) H+(aq)+CN-(aq)?