4. Bora co ennuse TC& C okcn xamn meJIoy HbIX (IA rpymmb II.U.M enze JIeeB a) u m eJIOY HO3e MeJIb HbIX (C a, Sr u Ba)MeTaJIJIOB C o6pa 30Ba HHeM : 0CHO BaHn a M(OH)_(x) , rge M- MeTaJI JI, x-MH^- nekc l win 2 . Cocr 'aBbT e ypa BHeH peaknuỷ: a) Li_(2)O+ldots H_(2)O= 6) Na_(2)O+H_(2)O= B) -CaO+H_(2)O= r) BaO+H_(2)O=

a) $Li_{2}O+H_{2}O=2LiOH$<br />b) $Na_{2}O+H_{2}O=2NaOH$<br />c) $CaO+H_{2}O=Ca(OH)_{2}$<br />d) $BaO+H_{2}O=Ba(OH)_{2}$<br /><br />Explanation:<br />a) Lithium oxide (Li2O) reacts with water (H2O) to form lithium hydroxide (LiOH).<br />b) Sodium oxide (Na2O) reacts with water (H2O) to form sodium hydroxide (NaOH).<br />c) Calcium oxide (CaO) reacts with water (H2O) to form calcium hydroxide (Ca(OH)2).<br />d) Barium oxide (BaO) reacts with water (H2O) to form barium hydroxide (Ba(OH)2).