Toyloq tumani tabiiy fanlar metodisti: Egamberdiyev B. Samarqand-2020 So’z boshi

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Javob
Ball
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8- Nazorat ishi

Mavzu:Elektroliz.

Nazorat shakli:Yozma ish.

I-variant.

1. 
   AgNO₃ eritmasi orqali 5 amper tok 13,4 soat mobaynida o’tkazilganda katodda hosil bo’lgan metallni massasini toping?
   
2. 
   52 gr Cd SO₄ ni elektroliz qilish 6 amper tok qancha vaqt (sekund) mobaynida o’tkazilishi kerak?
   
3. 
   1500 g 8 % CuSO₄ ning eritmasi elektroliz qilinganda anodda (inert elektrod) 30,8 l (n.sh.) gaz ajraldi. Elektrolizdan so’ng hosil bo’lgan moddaning massa ulushini (%) hisoblang.
   
4. 
   400 ml 0,2 M li eritma tayyorlash uchun soda kristallgidratidan necha g olish kerak
   

Kompetentlikni aniqlash uchun materiallar:

5.Doimiy ravishda iste’mol qiladigan osh tuzimizni eritmasini elektroliz qilganimizda katodda va anodda qanday moddalar ajralib chiqadi?(reaksiya tenglamasini yozing.)

II-variant

1.4 mol vodorоd pеrоksidi pоrtlаsh uchun 3А to’liq qаnchа vаqt dаvоmidа o’tkаzilishi kеrаk?

2.CuSO₄ eritmasi orqali 2 amper tok 193 cekuntd mobaynida o’tkazilganda katodda hosil bo’lgan metall massasini toping?

3. 500 g 8 % CuSO₄ ning eritmasi elektroliz qilinganda anodda (inert elektrod) 22,4 l (n.sh.) gaz ajraldi. Elektrolizdan so’ng hosil bo’lgan moddaning massa ulushini (%) hisoblang.

4. 2 litr 2 molyar eritma tayyorlash uchun qancha mol kaliy gidroksid kerak?

Kompetentlikni aniqlash uchun materiallar:

5. Doimiy ravishda iste’mol qiladigan osh tuzimizni eritmasini elektroliz qilganimizda katodda va anodda qanday moddalar ajralib chiqadi?(reaksiya tenglamasini yozing.)

MASALA YECHIMLARI______ VARIANT.

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