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Laju Reaksi: Tantangan Tinggi

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Uji materi Laju Reaksi

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Indonesia

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Laju Reaksi: Tantangan Tinggi
 

Laju Reaksi: Tantangan TinggiOnline version

Uji materi Laju Reaksi

by nurul hidayati
1

Apa itu laju reaksi menurut definisi ketsimbangan kimia yang berubah secara waktu?

2

Jika v= -d[A]/dt = k[A]^2, orde reaksi terhadap A adalah?

3

Untuk reaksi dengan v= k[A][B], bagaimana orde totalnya?

4

Aktivasi energi mempengaruhi laju reaksi melalui?

5

Apa arti konstanta laju (k) dalam hukum laju?

6

Untuk reaksi nol orde, bagaimana konsentrasi zat reaktan berubah seiring waktu?

7

Half-life reaksi nol orde tergantung pada apa?

8

Bagaimana suhu mempengaruhi laju reaksi melalui koefisien tumbukan (z)?

9

Apa peran katalis dalam laju reaksi?

10

Jika reaksi 2A -> produk memiliki orde total 2, bagaimana perubahan laju saat [A] digandakan?

Feedback

Laju reaksi = perubahan konsentrasi zat reaktan/produk per satuan waktu.

Persamaan v = k[A]^2 menunjukkan orde kedua terhadap A.

Laju bergantung pada [A] dan [B], sehingga orde total 2.

Laju reaksi dipengaruhi oleh suhu via Arrhenius: k = A e^(-Ea/RT).

k menilai seberapa cepat reaksi berjalan pada suhu tertentu.

Dalam orde nol, [A] = [A]0 - kt.

t1/2 nol orde tidak konstan, tergantung [A]0.

Suhu tinggi meningkatkan energi kinetik dan frekuensi tumbukan efektif.

Katalis menurunkan Ea sementara untuk mempercepat laju.

Laju tergantung pada [A]^2, sehingga faktor 4.

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