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Larutan natrium askorbat 0,001 M mempunyai pH=12, harga K a ​ asam askorbat adalah ....

Larutan natrium askorbat 0,001 M mempunyai pH=12, harga  asam askorbat adalah ....

  1. begin mathsize 14px style 10 to the power of negative sign 15 end exponent end style 

  2. begin mathsize 14px style 10 to the power of negative sign 13 end exponent end style 

  3. begin mathsize 14px style 10 to the power of negative sign 8 comma 5 end exponent end style 

  4. begin mathsize 14px style 10 to the power of negative sign 7 end exponent end style 

  5. begin mathsize 14px style 10 to the power of negative sign 6 end exponent end style 

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Y. Rochmawatie

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Jawaban

jawaban yang benar adalah B

jawaban yang benar adalah B

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Jadi, jawaban yang benar adalah B

table attributes columnalign right center left columnspacing 0px end attributes row size 14px pH size 14px equals size 14px 12 row size 14px pOH size 14px equals cell size 14px 14 size 14px minus sign size 14px 12 size 14px equals size 14px 2 end cell end table

 begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell open square brackets O H to the power of minus sign close square brackets end cell equals cell 10 to the power of negative sign 2 end exponent end cell row cell open square brackets O H to the power of minus sign close square brackets end cell equals cell square root of K subscript w over K subscript a space cross times space M end root end cell row cell 10 to the power of negative sign 2 end exponent end cell equals cell square root of 10 to the power of negative sign 14 end exponent over K subscript a space cross times space 10 to the power of negative sign 3 end exponent end root end cell row cell 10 to the power of negative sign 4 end exponent end cell equals cell 10 to the power of negative sign 14 end exponent over Ka space cross times space 10 to the power of negative sign 3 end exponent end cell row cell K subscript a end cell equals cell 10 to the power of negative sign 13 end exponent end cell end table end style

Jadi, jawaban yang benar adalah B

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