Question

What is the total concentration of all ions in an aqueous solution of 0.740 M Na2SO4?

Answer 1

total concentration of all ions is 2.22 M

we have to find the total concentration of all ions in an aqueous solution of 0.740 M Na₂SO₄

first dissociate sodium sulphate into its ions,

Na₂SO₄ ⇔ 2Na⁺ + SO₄¯ ¯

in one mole of Na₂SO₄, two moles of Na⁺ and one moles of SO₄²¯.

so, total number of moles of ions = 2 + 1 = 3 moles

therefore, total concentration of all ions in an aqueous solution of 0.74 M Na₂SO₄ is 3 × 0.74 = 2.22 M

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