Eritmalar

Question 1

Molar konsentratsiyalari nisbati 4:3 bo‘lgan ikki eritmaning umumiy hajmi 28 litr. Agar ikkala eritmadagi erigan modda miqdori nisbati mos ravishda 4:3 bo‘lsa, konsentratsiyasi kichik eritma hajmini (litr) aniqlang.

Accepted Answer

14

Answer

12

Answer

24

Answer

18

Question 2

Qaysi eritmaning molarligi ($C_M$) uning normalligidan ($C_N$) olti marta kam bo‘ladi? ($V$=1 litr)

Accepted Answer

$Al_2(SO_4)_3$ eritmasi

Answer

$KOH$ eritmasi

Answer

$CaCl_2$ eritmasi

Answer

$AlCl_3$ eritmasi

Question 3

1700 g $NaNO_3$ eritmasiga 284 g $Na_2SO_4$ qo‘shilganidan keyin eritmadagi $NO_3^-$ va $SO_4^{2-}$ ionlarining mol nisbati 3:1 ni tashkil etdi (barcha suvda eriydigan tuzlar uchun $\alpha$=100%). Dastlabki eritmadagi $NaNO_3$ tuzining massa ulushini (%) aniqlang.

Accepted Answer

30

Answer

15

Answer

44

Answer

66

Question 4

2020 g 10 % li kaliy nitrat eritmasini hosil qilish uchun necha gramm tuz zarur bo‘ladi?

Accepted Answer

202

Answer

2020

Answer

20,2

Answer

20200

Question 5

Suvli eritmada vodorod peroksid qisman parchalanganda eritma massasi 8 % ga kamaydi va vodorod peroksidning 10 % li eritmasi hosil bo‘ldi.

Dastlabki eritmadagi $\mathrm{H_2O_2}$ ning massa ulushini (%) toping.

Accepted Answer

26,2

Answer

17

Answer

52,4

Answer

34

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