2 marta kamayadi D)4 marta kamayadi 156g 10%li Naoh eritmasida 46g Na erishidan olingan eritmada ishqor massa ulushi


Download 0.66 Mb.
bet5/9
Sana22.04.2023
Hajmi0.66 Mb.
#1379416
1   2   3   4   5   6   7   8   9
X2 1400C dan pastda suv yo'qotsa X1 ga aylanadi D) X4 + X2etilatsetat

  • Har qanday bog' hosil bo'lishida energiya ajraladi uzilishida esa yutiladi. N N, H-H, N-H bog' energiyalari mos ravishda 940kJ/mol , 430kJ/mol, 400kJ/mol. N2+H2  NH3 reaksiyada 4 mol NH3 olinganda qancha energiya ajraladi? A)340kJ B)970kJ C)280kJ D)720kJ

  • Har qanday bog' hosil bo'lishida energiya ajraladi uzilishida esa yutiladi. N N, H-H, N-H bog' energiyalari mos ravishda 940kJ/mol , X kJ/mol, 400kJ/mol. 1N2+3H2  2NH3 + 170kJ. X ni aniqlang. A)1290kJ B)970kJ C)215kJ D)430kJ

  • Molyal konsentratsiyasi 25mol/kg bo'lgan NaOH eritmasining protsent konsentratsiyasini aniqlang. A)50% B)25% C)40% D)20%

  • Molyal konsentratsiyasi 2,5mol/kg bo'lgan Fe2(SO4)3 eritmasining protsent konsentratsiyasini aniqlang. A)50% B)25% C)40% D)20%

  • KHSO4 eritmasida dastlabki tuzga nisbatan ioni dissotsialanish darajasi 4 marta kam, K+ ga nisbatan ioni 5marta kam bo'lsa, KHSO4 dissotsialanish darajasini toping. A)80% B)75% C)95% D)90%

  • KHSO4 eritmasida dastlabki tuzga nisbatan ioni dissotsialanish darajasi3 marta kam, K+ ga nisbatan ioni 4 marta kam bo'lsa, KHSO4 dissotsialanish darajasini toping. A)80% B)75% C)95% D)90%

  • Modda eruvchanligi harorat ortganda 3 marta ortdi. 100g suv saqlagan eritmani to'yintirish uchun moddadan 40g eritish talab etilsa, dastlab eruvchanlik qanday bo'lgan? A)20 B)10 C)40 D)60

  • Modda eruvchanligi harorat ortganda 3 marta ortdi. 100g suv tutgan eritmani to'yintirish uchun moddadan 20g eritish talab etilsa, keyingi eruvchanlik qanday bo'lgan? A)20 B)
    Download 0.66 Mb.

    Do'stlaringiz bilan baham:
  • 1   2   3   4   5   6   7   8   9




    Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
    ma'muriyatiga murojaat qiling