Pertanyaan

UN 2010 No. 29 Pada suhu 273 0 C, gas brom dapat bereaksi dengan gas nitrogen monoksida menurut persamaan reaksi: 2NO (aq) + Br 2 (g) → 2NOBr Berdasarkan reaksi tersebut diperoleh data sebagai berikut: Percobaan Konsentrasi awal Laju reaksi awal (Ms -1 ) NO B r 2 0,1 0,05 6 0,1 0,10 12 0,2 0,10 24 Laju reaksi bila konsentrasi gas NO = 0,01 M dan gas Br 2 = 0,03 M adalah…

UN 2010 No. 29

Pada suhu 273⁰C, gas brom dapat bereaksi dengan gas nitrogen monoksida menurut persamaan reaksi:

2NO (aq) + Br₂(g) $\to$ 2NOBr

Berdasarkan reaksi tersebut diperoleh data sebagai berikut:

Percobaan	Konsentrasi awal		Laju reaksi awal (Ms^-1)
Percobaan	NO	$B r_{2}$	Laju reaksi awal (Ms^-1)
	0,1	0,05	6
	0,1	0,10	12
	0,2	0,10	24

Laju reaksi bila konsentrasi gas NO = 0,01 M dan gas Br₂ = 0,03 M adalah…

0,012
0,36
1,200
3,600
12,00

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Jawaban terverifikasi

Pembahasan

2 = 2 q 2 1 = 2 q q = 1 2 = 2 P 2 1 = 2 P P = 1 V = k (0,2)(0,1) 24 = k (0,2)(0,1) 24 = k (2 x 10 -2 ) K = 12 x 10 2 V = 12 x 10 2 (0,01)(0,03) V = 0,36

$begin mathsize 12px style v subscript 2 over v subscript 1 space equals space fraction numerator begin display style open square brackets A close square brackets to the power of p open square brackets B close square brackets to the power of q end style over denominator open square brackets A close square brackets to the power of p open square brackets B close square brackets to the power of q end fraction 12 over 6 space equals space fraction numerator begin display style horizontal strike open square brackets 0 comma 1 close square brackets to the power of p end strike open square brackets 0 comma 05 close square brackets to the power of q end style over denominator horizontal strike open square brackets 0 comma 1 close square brackets to the power of p end strike open square brackets 0 comma 05 close square brackets to the power of q end fraction end style$

2 = 2^q

2¹ = 2^q

q = 1

$begin mathsize 12px style fraction numerator v subscript 3 over denominator v 2 end fraction space equals space fraction numerator begin display style open square brackets A close square brackets to the power of p open square brackets B close square brackets to the power of q end style over denominator open square brackets A close square brackets to the power of p open square brackets B close square brackets to the power of q end fraction 24 over 612 space equals space fraction numerator begin display style open square brackets 0 comma 2 close square brackets to the power of p horizontal strike open square brackets 0 comma 10 close square brackets to the power of q end strike end style over denominator open square brackets 0 comma 1 close square brackets to the power of p horizontal strike open square brackets 0 comma 10 close square brackets to the power of q end strike end fraction end style$

2 = 2^P

2¹ = 2^P

P = 1

V = k (0,2)(0,1)

24 = k (0,2)(0,1)

24 = k (2 x 10^-2)

K = 12 x 10²

V = 12 x 10² (0,01)(0,03)

V = 0,36