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Konstanta reaksi kesetimbangan hidrogen sulfida () yang diukur pada suhu 25°C: Konstanta kesetimbangan reaksi: adalah...

Konstanta reaksi kesetimbangan hidrogen sulfida (begin mathsize 14px style H subscript 2 S end style) yang diukur pada suhu 25°C:


begin mathsize 14px style 1 right parenthesis H subscript 2 S left parenthesis italic a italic q right parenthesis equilibrium H to the power of plus sign left parenthesis italic a italic q right parenthesis plus H S to the power of minus sign left parenthesis italic a italic q right parenthesis K subscript c 1 end subscript equals 9 comma 5 cross times 10 to the power of negative sign 8 end exponent 2 right parenthesis H subscript 2 S left parenthesis italic a italic q right parenthesis equilibrium 2 H to the power of plus sign left parenthesis italic a italic q right parenthesis plus S to the power of 2 minus sign left parenthesis italic a italic q right parenthesis K subscript c 2 end subscript equals 9 comma 5 cross times 10 to the power of negative sign 27 end exponent end style 


Konstanta kesetimbangan reaksi:


begin mathsize 14px style H S to the power of minus sign left parenthesis italic a italic q right parenthesis equilibrium H to the power of plus sign left parenthesis italic a italic q right parenthesis plus S to the power of 2 minus sign left parenthesis italic a italic q right parenthesis end style 


adalah...

  1. begin mathsize 14px style 1 comma 7 cross times 10 to the power of negative sign 19 end exponent end style 

  2. size 14px 1 size 14px comma size 14px 0 size 14px cross times size 14px 10 to the power of size 14px minus sign size 14px 19 end exponent 

  3. size 14px 1 size 14px comma size 14px 1 size 14px cross times size 14px 10 to the power of size 14px minus sign size 14px 18 end exponentundefined 

  4. size 14px 1 size 14px comma size 14px 3 size 14px cross times size 14px 10 to the power of size 14px minus sign size 14px 18 end exponent 

  5. size 14px 1 size 14px comma size 14px 5 size 14px cross times size 14px 10 to the power of size 14px minus sign size 14px 18 end exponent 

Jawaban:

Reaksi 1 dibalik dan reaksi 2 tetap.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell H to the power of plus sign left parenthesis italic a italic q right parenthesis plus H S to the power of minus sign left parenthesis italic a italic q right parenthesis end cell rightwards harpoon over leftwards harpoon cell H subscript 2 S left parenthesis italic a italic q right parenthesis space space space K subscript c equals fraction numerator 1 over denominator 9 comma 5 cross times 10 to the power of negative sign 8 end exponent end fraction end cell row cell H subscript 2 S left parenthesis italic a italic q right parenthesis end cell rightwards harpoon over leftwards harpoon cell 2 H to the power of plus sign left parenthesis italic a italic q right parenthesis plus S to the power of 2 minus sign left parenthesis italic a italic q right parenthesis space space K subscript c equals 9 comma 5 cross times 10 to the power of negative sign 27 end exponent end cell row cell H S to the power of minus sign left parenthesis italic a italic q right parenthesis end cell rightwards harpoon over leftwards harpoon cell H to the power of plus sign left parenthesis italic a italic q right parenthesis plus S to the power of 2 minus sign left parenthesis italic a italic q right parenthesis space space K subscript c equals fraction numerator 1 over denominator 9 comma 5 cross times 10 to the power of negative sign 8 end exponent end fraction cross times 9 comma 5 cross times 10 to the power of negative sign 27 end exponent end cell row blank equals cell 1 comma 0 cross times 10 to the power of negative sign 19 end exponent end cell end table end style

Jadi, jawaban yang benar adalahspaceB.

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