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Platinum is insoluble in hydrochloric and nitric acid, but dissolves in hot aqua regia (a mixture of nitric and hydrochloric acids), to form aqueous chloroplatinic acid, H 2 PtCl 6: Pt + 4 HNO 3 + 6 HCl → H 2 PtCl 6 + 4 NO 2 + 4 H 2 O. As a soft acid, the Pt 2+ ion has a great affinity for sulfide and sulfur ligands. Numerous DMSO complexes ...
PTCL has been involved in anti-competitive practices several times in the recent years, particularly in the twin cities of Islamabad and Rawalpindi. In 2006, PTCL terminated Nayatel's E1 link at their colocation facility despite Nayatel fulfilling all the requirements as per their interconnect agreement.
Etymology The name Pakistan was coined by Choudhry Rahmat Ali, a Pakistan Movement activist, who in January 1933 first published it (originally as "Pakstan") in a pamphlet Now or Never, using it as an acronym. Rahmat Ali explained: "It is composed of letters taken from the names of all our homelands, Indian and Asian, P anjab, A fghania, K ashmir, S indh, and Baluchis tan." He added, "Pakistan ...
Perchloric acid is a mineral acid with the formula H Cl O 4.Usually found as an aqueous solution, this colorless compound is a stronger acid than sulfuric acid, nitric acid and hydrochloric acid.