stoichiometryprobs - Solomon's Study Notes General...

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S olomon’s Study Notes General Chemistry I Fall 2011 Solomon Weiskop PhD Practice Problems: [Stoichiometry]
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Study Notes & Practice Problems are available to print out by registering at www.solomonlinetutor.com Solomon Weiskop PhD Solomon’s Tutoring © Copyright 2011
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1 [#1] Balance ±² ³ ´ µ µ ² µ ·¸·¶ µ ¹ º ·»·¶ µ ·¸·² µ ¹· ¸ ±¹ µ [#2] Find the stoichiometric coefficient for HF 5H 2 SO 4 + __Ca 5 F(PO 4 ) 3 → __H 3 PO 4 + __CaSO 4 + ? HF [#3] Al(s) + O 2 (g) → Al 2 O 3 (s) (unbalanced) If you start with 6 moles Al how many moles O 2 are needed for a complete reaction? (a)18 (b) 8 (c) 4.5 (d) 3 (e) 6 [#4] Mn(s) + F 2 (g) → MnF 3 (s) (unbalanced) If you start with 5.12g Mn what mass of F 2 is required for complete reaction? (a) 1.18g (b) 2.36g (c) 2.66g (d) 3.54g (e) 5.31g [#5] CH 4 + O 2 → CO 2 + H 2 O (unbalanced) Which one of the following is incorrect? (a) 16g CH 4 will combine with 64g O 2 to give 44g CO 2 (b) 8g CH 4 will combine with 32g O 2 to give 22g CO 2 (c) 16mg CH 4 will combine with 64mg O 2 to give 44mg CO 2 (d) 8kg CH 4 will combine with 32kg O 2 to give 22kg CO 2 (e) 32g CH 4 will combine with 32g O 2 to give 88g CO 2 [#6] H 2 + NO → H 2 O +NH 3 (unbalanced) Which one is incorrect? (a) 1 mole NO will yield 1 mole H 2 O if reaction goes to completion (b) 1 mole NO will yield 1 mole NH 3 if reaction goes to completion (c) 5 moles H 2 are required to produce 2 moles NH 3 (d) In this reaction H 2 O and NH 3 will be produced in equal molar amounts (e) In this reaction H 2 O and NH 3 will be produced in equal mass amounts
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2 [#7] NaCl + H 2 SO 4 Na 2 SO 4 + HCl (unbalanced) How much sulfuric acid ( H 2 SO 4 ) in kg would be required to consume ±² ³ ´² µ ¶· NaCl (a) ¸±¹ ³ ´² º ¶· (b) ¸±» ³ ´² µ ¶· (c) ¸±¸ ³ ´² ¼ ¶· (d) ±² ³ ´² º ¶· (e) ½±¾ ³ ´² ¼ ¶· [#8] SiH 4 (g) + 2O 2 (g) → SiO 2 (g) +2H 2 O(g) If 5.2L SiH 4 is treated with O 2 what volume (in liters) of O 2 is required to complete the reaction? (a) 0.052L
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stoichiometryprobs - Solomon's Study Notes General...

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