Element atomlarining boshqa elementlarning muayyan sondagi atomlarini biriktirib olish xususiyati


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KIMYO TEST 2022umumiy kimyo

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1, 4
=====================================
2, 4
++++++++++++++++++++++++++++++++++++

Qaysi moddaning suvli eritmasiga potash qo‘shilganda gidroliz susayadi?


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FeBr3
======================================
CrCl3
=====================================
Al2(S04)з
=============================
# Na2S
++++++++++++++++++++++++++++++++++
Qaysi modda HNO2 bilan oksidlanish qaytarilish Pb(NO3)2 bilan almashinish reaksiyasiga kirishadi?
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# KI
=================================
Ca(NO3)2
====================================
Zn
=======================================
NH3
++++++++++++++++++++++++++++++++++++
40. Quyidagi ionlarning qaytaruvchanlik xossasi qanday o‘zgaradi?
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1-b; 2-a
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# 1-b; 2-b
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1-a; 2-a
====================================
1 -a; 2-b
+++++++++++++++++++++++++++++++++++

41. X0 + Y2+ = X2+ + У0 reaksiya uchun to‘g‘ri bo‘lgan hukmni toping.


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qaytaruvchi ion – Y2+
===========================================
qaytarilgan ion - Y2+
========================================
oksidlovchi ion - X2+
==========================================
# oksidlangan ion - X2+
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
42. Qaysi tuz eritmasida kislotali muhitni ta ’minlash gidroliz reaksiyasini susaytiradi?
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CaSO4
================================
KCN
================== =============
# MgSO4

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