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Tentukan nilai α dari larutan3,4 gram NH 3 ​ dilarutkan dalam air membentuk 2 Liter larutan. K b ​ NH 3 ​ = 1 , 8 ⋅ 1 0 − 5 ( A r ​ N = 14 )

Tentukan nilai  dari larutan 3,4 gram  dilarutkan dalam air membentuk 2 Liter larutan.  

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nilai adalah .

nilai undefined adalah begin mathsize 14px style 1 comma 34 middle dot 10 to the power of negative sign 2 end exponent end style

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Jadi, nilai adalah .

begin mathsize 14px style M equals fraction numerator mol over denominator V space open parentheses L close parentheses end fraction equals fraction numerator bevelled massa over Mr over denominator V space open parentheses L close parentheses end fraction equals fraction numerator bevelled fraction numerator 3 comma 4 over denominator 17 end fraction over denominator 2 end fraction equals 0 comma 1 space M equals 10 to the power of negative sign 1 end exponent space M  H to the power of plus sign equals square root of K subscript b middle dot M end root equals M middle dot alpha square root of 1 comma 8 middle dot 10 to the power of negative sign 5 end exponent middle dot 10 to the power of negative sign 1 end exponent end root equals 10 to the power of negative sign 1 end exponent middle dot alpha space space space space space space space space space space space space space space space 1 comma 8 middle dot 10 to the power of negative sign 6 end exponent equals 10 to the power of negative sign 2 end exponent middle dot alpha squared space space space space space space space space space space space space space space space 1 comma 8 middle dot 10 to the power of negative sign 4 end exponent equals alpha squared space space space space space space space space space space space space space 1 comma 34 middle dot 10 to the power of negative sign 2 end exponent equals alpha end style 


Jadi, nilai undefined adalah begin mathsize 14px style 1 comma 34 middle dot 10 to the power of negative sign 2 end exponent end style

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Suatu basa lemah XOH mempunyai konsentrasi sebesar 0,02M. Jika ketahui K b ​ XOH = 5 × 1 0 − 5 , tentukan derajat ionisasi!

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