Mineral acid intraconversion

Mineral acid intraconversion

				To
		az	bp	Sulfuric	Boric	Perchloric	Phosphoric	Hydroiodic	Hydrobromic	Hydrofluoric	Hydrochloric	Nitric
From	Sulfuric	98%	337		Borax		Apatite	CaI2	CaBr2	Fluorite	Salt	KNO3
	Boric		300	—			—	KI	KBr	KF	CaCl2	KNO3
	Perchloric		203	K2SO4	Borax		K3PO4	KI	KBr	KF	KCl	KNO3
	Phosphoric		158(d)	MgSO4	Borax			CaI2	CaBr2	Fluorite	CaCl2	KNO3
	Hydroiodic	57%	127	—	Borax		—		HgBr2	AgF	HgCl2	KNO3
	Hydrobromic	48%	124	Electrolyze Sulfur	Borax		—	—		AgF	CaCl2	KNO3
	Hydrofluoric	35%	120	—	Borax		—	CaI2	CaBr2		CaCl2	KNO3
	Hydrochloric	20.2	110	CuCl2 + SO2	Borax	NH4ClO4	—	—	—	AgF		KNO3
	Nitric	68%	83	chamber process	Borax	—	—	—	—	—	—

Cells with a dash (—) do not have a known direct path for conversion. A cation soluble for the column but insoluble for the row is ideal. Alternatively, convert the source acid to nitric acid, use that to make sulfuric acid, and use that to make the target acid.