Kimyo 8-sinf 3-chorak

Ekvivalent so'zining ma'nosi?

• Teng hajmli

• Teng qiymatli

• Teng massali

• Teng taqsimli

Avogadro doimiysi nechaga teng?

• 12,04*10²⁴

• 12,04*10²³

• 6,02*10²⁵

• 6,02*10²³

Har qanday gazning 1 moli normal sharoitda . . . litr halmni egallaydi.

• 22,4

• 11,2

• 33,6

• 44,8

Ekvivalent tushunchasini fanga kim kiritgan?

• Mendeleyev

• Lomonosov

• Berselius

• Vollaston

H₂S ning ekvivalentini toping.

• 16 g/ekv

• 17 g/ekv

• 18 g/ekv

• 19 g/ekv

Galogen tushunchasini fanga kim kiritgan?

• J. Dalton

• A. Butlerov

• I. Shveyger

• Y. Berselius

Galogen so'zining ma'nosi nima?

• Tuz hosil qiluvchi

• Suv hosil qiluvchi

• Kislota hosil qiluvchi

• Oksid hosil qiluvchi

Laboratoriyada HCl qaysi rekasiya yordamida olinadi?

• KOH + HCl =

• NaCl + H₂O =

• NaBr + HCl =

• NaCl + H₂SO₄ =

Oq pag'a cho'kma hosil bo'lishi qaysi galogen uchun sifat reaksiyasi hisoblanadi?

• F^-

• Cl^-

• Br^-

• I^-

Necha mol xlor normal sharoitda 67,2 litr chiqadi?

• 2 mol

• 3 mol

• 4 mol

• 5 mol