Pertanyaan

Larutan NH 4 Cl 0,4 M memiliki pH ...... ( K b = 10 -5 )

Larutan NH₄Cl 0,4 M memiliki pH ...... (K_b = 10^-5)

4 – log 6
6 – log 4
5 + log 2
5 – log 2
2 – log 5

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$N H subscript 4 C l space space space space rightwards arrow space space space N H subscript 4 to the power of plus space space plus space C l to the power of minus space 0 comma 4 space M space space space space space space space space space space space space 0 comma 4 space M left square bracket H to the power of plus right square bracket equals square root of fraction numerator K w space x space left square bracket N H subscript 4 to the power of plus right square bracket space over denominator K b end fraction end root left square bracket H to the power of plus right square bracket equals square root of fraction numerator 10 to the power of negative 14 end exponent space x space left square bracket 4 space x space 10 to the power of negative 1 end exponent right square bracket space over denominator space 10 to the power of negative 5 end exponent end fraction end root left square bracket H to the power of plus right square bracket equals square root of 4 space x space 10 to the power of negative 10 end exponent end root left square bracket H to the power of plus right square bracket equals 2 space x space 10 minus 5 space M p H equals space minus space log space left square bracket H to the power of plus right square bracket space p H equals space minus space log space left parenthesis 2 space x space 10 to the power of negative 5 end exponent right parenthesis space p H equals space 5 space – space log space 2$