Diantara persamaan reaksi berikut yang sudah setara adalah ....
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Di antara persamaan berikut yang sudah setara adalah …. A. Al(s) + 3H2SO4(aq) → Al2(SO4)3(aq) + 3H2O B. Mg(OH)2(s) + 2HCl(aq) → MgCl2(aq) + H2O(l) C. Fe2O3(s) + 2Al(s) → Al2O3(s) + Fe(s) D. C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) E. 3Cu(s) + 6HNO3(aq) → 3Cu(NO3)2(aq) + NO(g) + 3H2O(l) Pembahasan: Kita setarakan opsi yang diberikan: A. 2Al(s) + 3H2SO4(aq) → Al2(SO4)3(aq) + 3H2O B. Mg(OH)2(s) + 2HCl(aq) → MgCl2(aq) + 2H2O(l) C. Fe2O3(s) + 2Al(s) → Al2O3(s) + 2Fe(s) D. C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) E. 3Cu(s) + 6HNO3(aq) → 3Cu(NO3)2(aq) + NO(g) + 3H2O(l) (salah reaksi) Jawaban: D ----------------#---------------- Jangan lupa komentar & sarannya Email: Kunjungi terus: masdayat.net OK! 😁 Newer Posts Older Posts
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Asked by wiki @ 29/07/2021 in Kimia viewed by 697 persons Persamaan reaksi setara adalah persamaan reaksi kimia dimana jumlah atom-atom sejenis pada kiri dan kanan reaksi sudah sama banyak. Diantara pilihan diatas, persamaan reaksi yang sudah setara adalah: Perhatikan jumlah atom N di kiri dan dikanan sudah sama-sama 2. Atom H di kiri ada 6 dan di kanan juga 6. Sehingga persamaan reaksi sudah setara. Jadi, jawaban yang benar adalah B. Persamaan reaksi dikatakan setara, bila jumlah atom-atom zat-zat pereaksi (pada ruas kiri) sama dengan zat-zat hasil reaksi (pada ruas kanan). Apabila jumlah atom sebelum dan sesudah reaksi belum sama, maka perlu disetarakan dengan cara membubuhkan koefisien reaksi, namun indeks tidak boleh diubah. Persamaan reaksi kimia yang telah setara adalah reaksi pada pilihan jawaban C.
Jadi, jawaban yang benar adalah C. |