Element atomlarining boshqa elementlarning muayyan sondagi atomlarini biriktirib olish xususiyati


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KIMYO TEST 2022umumiy kimyo

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

Quyidagilardan qaytaruvchilik xossasi eng yuqori bo‘lgan anionni ko‘rsating.


============================
O2-
==========================
# Te2-
============================
Se2-
==============================
S2-
++++++++++++++++++++++++++++++

16. Qaysi moddaning suvli eritmasiga soda qo‘shilganda gidroliz susayadi?


=====================
CrCl3
=======================
FeBr2
=============================
Al2(SO4)3
=================================
# K2S
++++++++++++++++++++++++++++

17. Qaysi tuzning suvli eritmasida pH > 7 bo‘ladi? (T = 298 K)


==============================
ZnCl2
==============================
AgCl
===============================
NaNO3
=================================
# K2CO3
++++++++++++++++++++++++++++++++++++++++++++++++++++
Qaysi tuzlar suvli eritmada qaytmas gidrolizga uchraydi? 1) Al2S3, 2) MgCl2; 3) NaNO3; 4) HgF2.
==================
3, 4
===================
# 1, 4
===================
2, 3
====================
1, 2
++++++++++++++++++

Qaysi moddalar suvda eritilganda pH qiymati ortadi? 1) CH3ONa,; 2) CuCl2; 3) Na2S 4) Fe(NO3)2.


================
2, 4
==================
# 1, 3
==================
2, 3
=====================
1, 4
++++++++++++++++++++++

Qaysi faktorlar yordamida natriy asetat gidrolizini kuchaytirish mumkin?


1) NaOH qo‘shish; 2) eritmani qizdirish; 3) HCl qo‘shish; 4) eritmani sovutish
==========================
3, 4
==============================
1, 3
===============================
# 2, 3

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