. 2023 Jan 11;8(3):3339–3347. doi: 10.1021/acsomega.2c07041

SO₄^2––H₂O at T = 273.2 K and Pressure P = 94.77 kPa^a.

system	composition of solution, w(B) × 10²				equilibrated solid phase	source
system	w(Li₂SO₄)	w(Rb₂SO₄)	w(MgSO₄)	w(H₂O)	equilibrated solid phase	source
Li⁺//SO₄^2––H₂O	26.59	0.00	0.00	73.41	LSH	ref¹⁴
Li⁺//SO₄^2––H₂O	26.88	0.00	0.00	73.12	LSH	this work
Rb⁺//SO₄^2––H₂O	0.00	26.42	0.00	73.58	RS	ref²⁸
Rb⁺//SO₄^2––H₂O	0.00	27.36	0.00	72.64	RS	this work
Mg²⁺//SO₄^2––H₂O	0.00	0.00	21.03	78.97	M₇	ref¹⁴
Mg²⁺//SO₄^2––H₂O	0.00	0.00	21.06	78.94	M₇	this work
Li⁺, Mg²⁺//SO₄^2––H₂O	19.31	0.00	10.98	69.71	LSH + M₇	ref¹⁴
Li⁺, Mg²⁺//SO₄^2––H₂O	19.38	0.00	10.81	69.81	LSH + M₇	this work

Standard uncertainties u are u(T) = 0.20 K; u(Li⁺) = 0.005; u(Rb⁺) = 0.0061; u(Mg²⁺) = 0.005; u(SO₄^2–) = 0.0060; w(B) is the mass fraction of B; LSH: Li₂SO₄·H₂O; RS: Rb₂SO₄; and M₇: MgSO₄·7H₂O.

Table 3. Invariant of the Binary and Ternary Subsystem in the Quaternary System Li+, Rb+, Mg2+//SO42––H2O at T = 273.2 K and Pressure P = 94.77 kPaa.

Table 3. Invariant of the Binary and Ternary Subsystem in the Quaternary System Li⁺, Rb⁺, Mg²⁺//SO₄^2––H₂O at T = 273.2 K and Pressure P = 94.77 kPa^a.