Question

Show your work. Use the correct number of significant figures in your answers. Aluminum metal reacts with chlorine gas to form solid aluminum chloride. 1. Write the balanced equation including states of matter. 2. If 70.0 grams of aluminum reacts with excess chlorine gas, how many grams of aluminum chloride will form? 3. How many grams of chlorine will react completely with 85.6g of aluminum? Sodium hydroxide reacts with sulfuric acid to produce water and sodium sulfate. 4. Write the balanced equation including states of matter. 5. How many grams of sodium hydroxide will be required to fully react with 6.2 grams of sulfuric acid? Bonus - 10 points. Show your work, use correct number of significant figures. Given the following balanced equation: Zn (s) +CuCl2 (ag) -> ZnCl2 (aq) + Cu (s) How many moles of ZnCl2 will be produced from 46.00 grams of Zn, assuming excess Cucl2 is available?

Answer 1

0 2 1 + 3 Cl2 2 A13 gin wt of Al = 700gm Molar mans of Alz 21 g/mos No. of moles of Al= gmwt = 70 = 2.59 Moor many i • 2 mot of Al produce 2 motes of Alla il 4 4 4 " I " u u i 2.59 4 4 4 will u = 2.59 moles of A13 No. of moles of Alz= 2.59 Molar mass of A143= 133.34 gmott Gram of Allz - motes x motarmans = 2.59 mot x 133.34 g mer 1. Grams of All3 = 345.359 ③ Gram wt of Al = 8569 Molas mans of A1= 27 gmor! : Moles of ALE 6576 - 3:17 2 mol of Al react with = 3 moles of C12 1 4 will.4 = i 3.18 4 4 4 4 4 = 3x3.17 =4.755 moles of Cl2

& No. of moles of Cl₂ = 4.755 mol Molar marx of Cle= 70.906 g/mol . Grams of Ug = moles x molar mann = 4.755x70.906 Grams of U2 = 337.158 9 2NaOH + H₂SO4 Nag sou +2H₂O 6 gu wt of H₂SO4 = 6.2 m molar mans of H₂SO4 = 98 91 mot i No. of moles of H₂SO4 = 62 = 0.063 98 I mole of H₂ sou reacts with a moles of NaOH 0.063 n u will react u= 2x0.063 . = 0.126 moles of NaOH : No. of moles of NaOH = 0.1269 Molar mans of NaOH = 40 gmott in Mann of NaOH = 0.1 26 x 40 = 5.04 m Thanks!

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