What is the numerical value of for an acid whose is ?

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

What is the numerical value of pKapK_a for an acid whose KaK_a is 1.8×10−51.8\times10^{-5}? (a) 5.46 (b) −4.74 (c) 4.74 (d) 5.00

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