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100 mL larutan NaOH diketahui memiliki pH = 13. Berapa gram NaOH yang terlarut dalam larutan tersebut? ​

100 mL larutan NaOH diketahui memiliki pH = 13. Berapa gram NaOH yang terlarut dalam larutan tersebut?

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Jawaban terverifikasi

Jawaban

massa NaOH yang terlarut dalam larutan adalah 0,4 gram.

massa NaOH yang terlarut dalam larutan adalah 0,4 gram.

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Menghitung konsentrasi : Menenetukan konsentrasi larutan NaOH: Menghitung massa NaOH yang terlarut: Jadi, massa NaOH yang terlarut dalam larutan adalah 0,4 gram.

Menghitung konsentrasi O H to the power of minus sign :

space space pH equals minus sign log open square brackets H to the power of plus sign close square brackets space space space 13 equals minus sign log open square brackets H to the power of plus sign close square brackets open square brackets H to the power of plus sign close square brackets equals 10 to the power of negative sign 13 end exponent space M  space space space space open square brackets H to the power of plus sign close square brackets open square brackets O H to the power of minus sign close square brackets equals 10 to the power of negative sign 14 end exponent left parenthesis 10 to the power of negative sign 13 end exponent right parenthesis open square brackets O H to the power of minus sign close square brackets equals 10 to the power of negative sign 14 end exponent space space space space space space space space space space open square brackets O H to the power of minus sign close square brackets equals 10 to the power of negative sign 14 end exponent over 10 to the power of negative sign 13 end exponent space space space space space space space space space space space space space space space space space space space equals 10 to the power of negative sign 1 end exponent space M    

Menenetukan konsentrasi larutan NaOH:

Na O H yields Na to the power of plus sign and O H to the power of minus sign  open square brackets Na O H close square brackets double bond open square brackets O H to the power of minus sign close square brackets equals 10 to the power of negative sign 1 end exponent space M 

Menghitung massa NaOH yang terlarut:

n space Na O H double bond M cross times V space space space space space space space space space space space space space equals 0 comma 1 space M cross times 0 comma 1 space L space space space space space space space space space space space space space equals 0 comma 01 space mol massa space Na O H double bond n cross times Mr space space space space space space space space space space space space space space space space space space space space space equals 0 comma 01 cross times 40 space space space space space space space space space space space space space space space space space space space space space equals 0 comma 4 space gram 

Jadi, massa NaOH yang terlarut dalam larutan adalah 0,4 gram.

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