Question

Question 3 Part A Sodium carbonate can react with chromium (1) cwide and oxygen gas to make sodium chromate and carbon dioxide (as shown in the reaction below). 4N,CO() +2C705(e) +3069) Ne, CrO,() + 4CO3(9) AN -110.4kJ/mol # 10.7 g Cross reached according to this reaction, how much heat is produced? 304 15.54 kJ 1181 kJ 3.836] 7.772 kJ Submit Requests Provide feedback MacBook Pro D-

Answer 1

Part-Ai Sodium carbonate can react with chromium (11) oxide and gan to make sodium chromate and carbon dioxide. oxygen JA 4 Na, C02(5) + 209703 (5) + 30,8)→ 4Na, crop 15) + 460, 19).4H =-110.4 kg/mol If to 7 go Of of CrO₂ is reacted according to this reaction how much heat is produced ? 0 15.54 KJ 0 1181 KI 3.886 KI O 7:772 Kg. → molecular weight of Cr2 93 = ( 52X2 + 1683) = 152go 10.7 g. coz Oz = 107 mole Crzoz. From the reaction it is observed that. 2 mole of cry Oz produce 110.4 KJ heat. 1 9 fra 03 110.4. z ug meat. ... 10.7 152" 9 cry on 110 4x 10.7 k heart 2 x 152. - 3.885 KJ heat Answer