O'quvchi ikkita eritmani shunday tayyorladi: birinchi eritma — 100 ml suvga 5 g rux xloridni qo'shib, ikkinchi eritma — 100 ml suvga 5 g natriy sulfatni qo'shib. So'ngra ikki eritmani aralashtirdi. Eritmalar aralashtirilganda nima sodir bo'ladi?

  1. Tiniq eritma hosil bo'ladi
  2. Natriy xlorid cho'kmaga tushadi
  3. Rux sulfat cho'kmaga tushadi
  4. Natriy xlorid va rux sulfatlar cho'kmaga tushadi

📝 Detailed explanation

ZnCl₂ + Na₂SO₄ → ZnSO₄ + 2NaCl.
Bu almashinish reaksiyasida hosil bo'lgan ZnSO₄ va NaCl ikkalasi ham suvda yaxshi eriydigan tuzlardir. Shuning uchun cho'kma hosil bo'lmaydi va eritma tiniq qoladi. Cho'kma hosil bo'lishi uchun hosil bo'layotgan moddalardan biri suvda erimaydi bo'lishi kerak.
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