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Diketahui beberapa larutan asam sebagai berikut :
1) 100 ml larutan begin mathsize 14px style H subscript 2 S O subscript 4 space 0 comma 02 space M end style 
2) 100 ml larutan begin mathsize 14px style H Cl O subscript 4 space 0 comma 03 space M end style 
3) 100 ml larutan begin mathsize 14px style H N O subscript 3 space 0 comma 01 space M end style 
4) 100 ml larutan begin mathsize 14px style H Cl space 0 comma 05 space M end style 
5) 100 ml larutan begin mathsize 14px style H Br space 0 comma 04 space M end style 
Larutan yang mempunyai pH paling rendah ditunjukkan oleh angka ....

N. Puspita

Master Teacher

Jawaban terverifikasi

Jawaban

larutan yang memiliki pH paling rendah adalah larutan 4).

Pembahasan

1) 100 ml larutan begin mathsize 14px style H subscript 2 S O subscript 4 space 0 comma 02 space M end style 

H subscript 2 S O subscript 4 yields 2 H to the power of plus sign and S O subscript 4 to the power of negative sign 2 end exponent open square brackets H to the power of plus sign close square brackets equals 2 cross times M space H subscript 2 S O subscript 4 space space space space space space space space space equals 2 cross times 0 comma 02 space M space space space space space space space space space equals 0 comma 04 space M pH equals minus sign log open square brackets H to the power of plus sign close square brackets space space space space equals minus sign log left parenthesis 0 comma 04 right parenthesis space space space space equals minus sign log left parenthesis 4 cross times 10 to the power of negative sign 2 end exponent right parenthesis space space space space equals 2 minus sign log space 4 space   


2) 100 ml larutan begin mathsize 14px style H Cl O subscript 4 space 0 comma 03 space M end style 

H Cl O subscript 4 yields H to the power of plus sign and Cl O subscript 4 to the power of minus sign open square brackets H to the power of plus sign close square brackets double bond M space H Cl O subscript 4 equals 0 comma 03 space M pH equals minus sign log open square brackets H to the power of plus sign close square brackets space space space space equals minus sign log left parenthesis 0 comma 03 right parenthesis space space space space equals minus sign log left parenthesis 3 cross times 10 to the power of negative sign 2 end exponent right parenthesis space space space space equals 2 minus sign log space 3   


3) 100 ml larutan begin mathsize 14px style H N O subscript 3 space 0 comma 01 space M end style 

H N O subscript 3 yields H to the power of plus sign and N O subscript 3 to the power of minus sign open square brackets H to the power of plus sign close square brackets double bond M space H N O subscript 3 equals 0 comma 01 space M pH equals minus sign log open square brackets H to the power of plus sign close square brackets space space space space equals minus sign log left parenthesis 0 comma 01 right parenthesis space space space space equals minus sign log left parenthesis 10 to the power of negative sign 2 end exponent right parenthesis space space space space equals 2  


4) 100 ml larutan begin mathsize 14px style H Cl space 0 comma 05 space M end style 

H Cl yields H to the power of plus sign and Cl to the power of minus sign open square brackets H to the power of plus sign close square brackets double bond M space H Cl equals 0 comma 05 space M pH equals minus sign log open square brackets H to the power of plus sign close square brackets space space space space equals minus sign log left parenthesis 0 comma 05 right parenthesis space space space space equals minus sign log left parenthesis 5 cross times 10 to the power of negative sign 2 end exponent right parenthesis space space space space equals 2 minus sign log space 5  


5) 100 ml larutan begin mathsize 14px style H Br space 0 comma 04 space M end style 

H Br yields H to the power of plus sign and Br to the power of minus sign open square brackets H to the power of plus sign close square brackets double bond M space Br equals 0 comma 04 space M pH equals minus sign log open square brackets H to the power of plus sign close square brackets space space space space equals minus sign log left parenthesis 0 comma 04 right parenthesis space space space space equals minus sign log left parenthesis 4 cross times 10 to the power of negative sign 2 end exponent right parenthesis space space space space equals 2 minus sign log space 4  

Jadi, larutan yang memiliki pH paling rendah adalah larutan 4).

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