Fenol, etilenglikol va sirka kislotadan iborat aralashma 8 g NaOH bilan to‘liq reaksiyaga kirishadi. Dastlabki aralashma mo‘l miqdor Na bilan ta’sirlashsa 4,48 l (n.sh.) gaz ajraldi. Dastlabki aralashmadagi necha mol yangi tayyorlangan Cu(OH)₂ bilan reaksiyaga kirishadi?

0,05
0,04
0,08
0,10

📝 Detailed explanation

n(NaOH)=0,2; n(H₂)=0,2 ⇒ jami faol H = 0,4 mol. Fenol (a), etilenglikol (b, 2 OH), sirka (c) bilan: a+b·0+c=0,2 (NaOH), a+2b+c=0,4 (Na). ⇒ 2b=0,2 ⇒ b=0,1. Cu(OH)₂ etilenglikol bilan 1:2 reaksiyaga kirishadi ⇒ 0,1/2=0,05 mol.

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