Nazorat shakli: Test sinovi Avogadro doimiysini ifodalovchi sonni ko‘rsating

Fosfat kislotada fosforning oksidlanish darajasi nechaga teng?

a) +7; b) +1; c) +2; d) +5.

14. 
    
    Katalizator kimyoviy reaksiyada qanday vazifani bajaradi?
    

1. Kimyoviy reaksiyani tezlashtiradi, ammo o‘zi reaksiyada sarflanmaydi.

   
   

2. Kimyoviy reaksiyani sekinlashtiradi.

   
   

3. Kimyoviy reaksiyada hech qanday ahamiyatga ega emas.

   
   

4. Reaksiya mahsulotlarining alohida-alohida ajralib chiqishini ta’minlaydi.

   
   

Test raqami	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Javob
Ball

Nazorat ishining bali – bahosi:
5- NAZORAT ISHI
Mavzu: Elektrolitlar, noelektrolitlar, elektrolitikdissotsiyalanish nazariyasi, kislota, asos va tuzlarning dissotsiyalanishi, kuchli, kuchsiz elekrtolitlar va ion almashinish reaksiyalari

Nazorat shakli: Yozma ish

I variant

1. Quyida keltirilgan kislota, asos va tuzlarning bosqichli dissotsiyalanishini yozing:

H₂SO₄, Ca(OH)₂, NaHCO₃, MgOHCl.

2. Quyidagi moddalarning dissotsiyalanish tenglamasini yozing:

Na, SO₄, HNO_3, KOH, CH₃COOH.

3. Xlorid kislota quyida keltirilgan moddalarning qaysilari bilan kimyoviy reaksiyaga kirishadi: Cu, CaO, SiO₂, CuO, CO₂, CaCO₃, KNO₃.Tegishli reaksiya tenglamalarini yozing.

   
   

4. Massasi 97,4 g bo‘lgan xlorid kislotaning 15%li eritmasida 11,2 g temir qipig‘li havo ishtirokida reaksiyaga kirishganda qanday modda hosil bo‘ladi. Reaksiya tenglamasini yozing.

   
   

II variant

1. Quyidagi kuchli elektrolitlarning elektrolitik dissotsiyalanish tenglamalarini yozing:

NaOH, Fe(NO₃) ₃, HNO₃, Ba(OH)₂.

2. Formulalari quyida berilgan moddalardan qaysilari juft-juft bo‘lib reaksiyaga kirishib, HCI hosil qiladi? Reaksiya tenglamalarini yozing.

NaCI, KCI, NaHSO₄, H₂SO_4.

3. Kaliy xloridning massa ulushi 0,03 bo‘lgan 500 g eritmasi bug‘latilishi natijasida eritma massasi 300 g ga kamaydi. Qolgan eritmadagi kaliy xloridning massa ulushini toping.

   
   

4. 30% li xlorid kislota bilan tegishli miqdordagi soda o‘zaro to‘la ta’sirlashishi natijasida hosil bo‘lgan eritmadagi tuzning konsentratsiyasini (%) hisoblang.

   
   

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____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Nazorat ishining bali – bahosi: