Question

Name (First and Last Practice problems 1. Balance the following equations: *) - KB - Fe(OH) → — KOH. - Fer b) - KOH + Co[POR → K.PO. COOH 2. Write the balanced chemical equation for the production of homine pentru defe liquid bromine and fluorine pas. Be sure to include physical states 3. Write the balance chemical equation to show the formation of aques aluminum chloride and hydrogen pas upon reacting powdered aluminum with a solution of hydrochloric acid. Be sure to include physical states.

Answer 1

- 3 RBr 6 kon Fecor Colpoy) > 3 kon 9 Kapout e e Febr Color) 2 Brg f5 F 2 Bris Brz () e SF g (9) - 2 Brts (9) 37 Alu Hello 3) 2 Alo) e 6H lg (aq) - 2 AlCl3 (aq) + 3Hg (9) 4 Q Naoh (aq) + Hy sou - Nag sou + 2H2O A moles of Naoh = men = 200 as molar meny to moles of Naz Soyc ty moles of NaOH (look above Egn.) =*5 -2.5 mans of Na sou= mole x molar man =) 2.58 142 = 355 grany 51) 9 M (6) 430 (9) 2 2 2 02 ( b) moles of Og = 8.75 -0.2734 32 Molex of N = moles of Ng O3= 2 x more x mola & Ng 03 2 x 0. 2734= 0.1823 mans of Ng O3= 0.1823x76 = 13.855 grams -) % geld- actual Yieldx100 theoreticael Yield 6.808100 - 49.06% 13.855 ou Yield

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