Answer to Question #294379 in Inorganic Chemistry for Lena

Question

Determine the moles of solute particles dissolved in 1.0 Kg of water, for the following solutions:

a) CH₃CH₂OH, 2.0 m; b) KCl, 2.5 m; c) Al₂(SO₄)₃, 1.0 m; d) C₁₂H₂₂O₁₁ (saccarosio), 3.0 m; e) HNO₃, 2.0 m

Answer 1

a)

CH₃CH₂OH is a non-electrolyte.

$2.0\ moles\ of\ particles$

b)

KCl produces 2 ions:

KCl --> K⁺ + Cl^-

$2.5\times2=5.0\ moles\ of\ particles$

c)

Al₂(SO₄)₃ produces 5 ions:

Al₂(SO₄)₃ --> 2Al³⁺ + 3SO₄^2-

$1.0\times5=5.0\ moles\ of\ particles$

d)

C₁₂H₂₂O₁₁ is a non-electrolyte.

$3.0\ moles\ of\ particles$

e)

HNO₃ produces 2 ions:

HNO₃ --> H⁺ + NO₃^-

$2.0\times2=4.0\ moles\ of\ particles$