Chemistry, 20.01.2020 02:31 sadieruegner393

Using chemical equations, show how the triprotic acid h3po4 ionizes in water. phases, such as (l) or (aq), are optional.

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Answer from: jcece9055

Phosphate acid includes Triprotic acid and weak acid, which will be ionized in 3 stages

Further explanation

According to Arrhenius, acids are substances which, when dissolved in water, release Hions.

An HₓY acid in water will ionize:

HₓY (aq) --------> xH⁺ (aq) + Yˣ- (aq)

Example:

HCl -------> H⁺ + Cl⁻

The amount of Hions produced by 1 acid molecule is called valence acid, whereas acidic residuals are formed after the release of Hions.

Usually, the name acid begins with the word acid followed by the name of the remaining acidic ion

The ion concentration of a weak acid is determined by the value of the acid ionization constant (Ka).

The greater the value of Ka, the greater the dissociated acid produces its Hion and the greater its acidity

Based on the number of protons (H ⁺) released, acids can be divided into:

• 1. Monoprotic acid is an acid which releases one H + ion such as HCl, HCN, HNO₃

• 2. Polyprotic acid which is an acid that releases more than one H⁺ ion.

This acid can be divided into two:

a. Diprotic acid: releases 2 H + ions, such as H₂SO₄, H₂CO₃ b. Triprotic acid: releases 3 H + ions such as H₃PO₄

In general, the weak acid ionization reaction

HA (aq) ---> H⁺ (aq) + A⁻ (aq)

Ka's value

$\large {\boxed {\bold {Ka \: = \: \frac {[H ^ +] [A ^ -]} {[HA]}}}}$

Phosphate acid includes Triprotic acid and weak acid which will be ionized in 3 stages :

H₃PO₄ (aq) ⇌H⁺(aq) + H₂PO₄⁻(aq) ⇒Ka₁ H₂PO₄⁻ (aq) ⇌H⁺(aq) + HPO₄⁻² (aq) ⇒Ka₂ HPO₄⁻² (aq)⇌H⁺(aq) + PO₄⁻³ (aq) ⇒Ka₃

Ka = Ka₁ x Ka₂ x Ka₃

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Using chemical equations, show how the triprotic acid h3po4 ionizes in water. phases, such as (l) or...

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