What is the concentration of lithium ions in 0.400 M Li₂HPO₄?

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05-02-2021
Chemistry

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What is the concentration of lithium ions in 0.400 M Li₂HPO₄?

Sagot :

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rochan rochan · Answer 1 · 2021-02-06T21:00:59-05:00

rochan rochan

06-02-2021

Answer: 0.800 M

Basically, the ratio is 2:1, so when you have 1 M of Li2HPO4 it means you have 2 M in the concentration of lithium ions. So knowing the ratio, we know we just need to multiply 0.400 x 2.

I'm bad at explaining it, but got it right on chem101 sooo

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Eduard22sly Eduard22sly · Answer 2 · 2021-09-16T07:09:03-04:00

The concentration of lithium ion, Li⁺ in 0.4 M Li₂HPO₄ is 0.8 M.

The concentration of a substance is simply the amount of the substance in 1 L of water.

To obtain the concentration of lithium ion, Li⁺ in Li₂HPO₄, we'll begin by writing the dissociation equation of Li₂HPO₄. This is illustrated below:

Li₂HPO₄ (aq) <=> 2Li⁺(aq) + HPO₄²¯(aq)

From the balanced equation above,

1 mole of Li₂HPO₄ produced 2 moles of Li²⁺.

Finally, we shall determine the concentration of lithium ion, Li⁺ in 0.4 M Li₂HPO₄. This can be obtained as follow:

From the balanced equation above,

1 mole of Li₂HPO₄ produced 2 mole of Li⁺.

Therefore, 0.4 M Li₂HPO₄ will produce = 2 × 0.4 = 0.8M Li²⁺

Thus, 0.8 M lithium ion, Li⁺ is present in the solution.

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Sagot :

Li₂HPO₄ (aq) <=> 2Li⁺(aq) + HPO₄²¯(aq)

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