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Consider a buffer solution made up of H2PO4- and HPO42-. What mole ratio of HPO42- / H2PO4- will give a pH of 6.95? Ka = 6.3 x 10-8

Please give the answer to 2 significant figures.

Beskou 'n bufferoplossing wat bestaan uit H2PO4- en HPO42-. Watter molverhouding van HPO42-/ H2PO4- sal 'n pH van 6.95 gee? Ka = 6.3 x 10-8

Gee asseblief die antwoord tot 2 beduidende syfers.

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