. . . . "the negative logarithm of the hydrogen ion activity that represents the acidity or alkalinity of an aqueous solution." . . . "pH of aqueous solution of substance" . "pH of aqueous solution" . . . . . "Christos Vasileiou" . "2026-01-26T09:57:08.477Z"^^ . . . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz1OobdRASd9SftHrLhG905OXjv8DHndvyWzXRJ5EDFPankMSnHZPHK+g2qEeRWdonstt55CLrpTpWsVv9xRtTqPidXHbnWLBXX42iCB+EnZNoKqAVKF5GxkSR38S0uTTq3aeQJbw2kTpx6LMkspmuH95fgAI/lfqPWrxdlI98jIeHQ14UXZpiWmkkvPgC9GVgmwHiG1hB/NCA2fKCOxVodN44OfhAPtkWmPJ40IcGPSalI4HRqgLLI5PabdRk3PiG81cUngmQU1Xk6EapzkRJGenkOlGsC5L4ktEPO6LS9uBMLTMLQDtGtkrcwqg5HmeKv7Ili3vgr3LL8/GaBBOLQIDAQAB" . "A3vXtyfDY99VDmuEtl+3izm5xNM2bT+dCeG61rmI2kAP0ab4tdneKd77brOxmdyjosXWAgj8SMEfRaCpLYTzHb3e1Q/eFnP9yhLDRdx2MVB+cIJyVYW//fGMBYdbVbW5laur9uddEMMhmgX/LzowxO7hfkneN/QKUtgJ7kW5ZQsfyXhXJeqiAoCDFoaCd4AJKfhWnP+Aw7EDVh5e5fViRupY1CvIifGRSA+A89r9HcWv/qrzOONZ1f3ZSfvo2eMrtBUKltz81t/zVK0jEE/gsHx2GlL8MMxEaYLoq7iWJ8js1+IMwY8jQjZfVMYRqG/5jKWNISE6fvnUHILOAA5HSQ==" . . .