Kalit so‘zlar
Abstrak
Ushbu maqolada analitik kimyo fanini o‘qitishda II guruh kationlarining sifat analizini muammoli ta’lim metodi asosida takomillashtirish masalasi yoritilgan. Unda kumush (Ag⁺), simob(I) (Hg₂²⁺) va qo‘rg‘oshin (Pb²⁺) kationlarining asosiy sifat reaksiyalari, ularni aniqlashda hosil bo‘ladigan cho‘kmalar va ularning o‘ziga xos xususiyatlari tahlil qilingan. II guruh kationlari aralashmasini xlorid kislota yordamida cho‘ktirish, hosil bo‘lgan cho‘kmani issiq suv bilan ajratish, Pb²⁺ ionini aniqlash hamda Ag⁺ va Hg₂²⁺ ionlarini ammiak eritmasi yordamida farqlash ketma-ketligi muammoli ta’lim nuqtayi nazaridan ko‘rib chiqilgan.
Shuningdek, o‘quv jarayonida muammoli vaziyat, analitik topshiriq va laboratoriya tajribalaridan foydalanishning mazmuni yoritilgan. Mazkur yondashuv sifat reaksiyalarini o‘zaro bog‘liq holda tahlil qilish va analitik xulosa chiqarishga yo‘naltirilgan.
References
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Akkuzu N., Uyulgan M. A. Step by step learning using the I diagram in the systematic qualitative analyses of cations within a guided inquiry learning approach // Chemistry Education Research and Practice. – 2017. – Vol. 18. – P. 641–658. – DOI: 10.1039/C7RP00050B.
Larive C. K. Problem-based learning in the analytical chemistry laboratory course // Analytical and Bioanalytical Chemistry. – 2004. – Vol. 380, No. 3. – P. 357–359. – DOI: 10.1007/s00216-004-2802-z.