what is the mass of calcium carbonate needed to produce 87.0 l of carbon dioxide at stp

Chemical Reactions and Reaction Stoichiometry
Examples of
Multiple Choice Questions

1.: Balance the post-obit equation with the smallest whole number coefficients. Cull the answer that is the sum of the coefficients in the balanced equation. Practice not forget coefficients of "1."
PtCl_four + XeF_ii PtF₆ + ClF + Xe; (a) 16; (b) 22; (c) 24; (d) 26; (e) 32
2.: Residue the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the counterbalanced equation. Do non forget coefficients of "one."
Cr_two(SO₄)₃ + RbOH Cr(OH)₃ + Rb₂And so₄; (a) 10; (b) 12; (c) 13; (d) xiv; (e) 15
3.: Remainder the following equation using minimum integral coefficients:
NH₃ + O₂ NO_two + H_twoO
The stoichiometric coefficient for oxygen gas O₂ is:; (a) one; (b) 4; (c) iii; (d) seven; (east) 5
4.: When iron pyrite (FeS₂) is heated in air, the process known as "roasting" forms sulfur dioxide and iron(III) oxide. When the equation for this procedure is completed and balanced, using the smallest whole number coefficients, what is the coefficient for "O_two"?
___ FeS_ii + ___ O_ii ___ Then_ii + ___ Fe₂O₃; (a) two; (b) 4; (c) vii; (d) 8; (e) 11
5.: How many moles of KBrO₃ are required to set 0.0700 moles of Br_ii co-ordinate to the reaction:
KBrO₃ + 5KBr + 6HNO₃ 6KNO₃ + 3Br_ii + 3H₂O; (a) 0.210; (b) 0.0732; (c) 0.0704; (d) 0.220; (e) 0.0233
6.: Which of the following statements is Faux for the chemic equation given below in which nitrogen gas reacts with hydrogen gas to class ammonia gas assuming the reaction goes to completion?
North₂ + 3H_ii 2NH₃; (a) The reaction of 1 mole of H_ii will produce 2/iii moles of NH₃.; (b) One mole of North₂ volition produce two moles of NH₃.; (c) One molecule of nitrogen requires three molecules of hydrogen for complete reaction.; (d) The reaction of fourteen g of nitrogen produces 17 g of ammonia.; (e) The reaction of three moles of hydrogen gas will produce 17 g of ammonia.
7.: Calcium carbide, CaC₂, is an of import preliminary chemical for industries producing synthetic fabrics and plastics. CaC₂ may be produced by heating calcium oxide with coke:
CaO + 3C CaC₂ + CO
What is the corporeality of CaC₂ which can exist produced from the reaction of excess calcium oxide and 10.two g of carbon? (Assume 100% efficiency of reaction for purposes of this problem.); (a) xviii.one yard; (b) 28.4 g; (c) 20.8 chiliad; (d) 19.8 g; (eastward) 27.2 g
8.: Calculate the mass of hydrogen formed when 25 grams of aluminum reacts with excess hydrochloric acid.
2Al + 6HCl Al₂Cl_half-dozen + 3H_ii; (a) 0.41 1000; (b) i.2 yard; (c) i.viii g; (d) 2.8 grand; (e) 0.92 1000
9.: When 12 g of methanol (CH_threeOH) was treated with backlog oxidizing agent (MnO₄ ^-), 14 g of formic acid (HCOOH) was obtained. Using the following chemical equation, calculate the per centum yield. (The reaction is much more complex than this; please ignore the fact that the charges do not residue.)
3CH_iiiOH + 4MnO₄ ^- 3HCOOH + 4MnO_ii; (a) 100%; (b) 92%; (c) 82%; (d) 70%; (e) 55%
ten.: A commercially valuable paint and adhesive stripper, dimethyl sulfoxide (DMSO), (CH₃)_iiAnd then, tin can be prepared by the reaction of oxygen with dimethyl sulfide, (CH₃)₂S, using a ratio of 1 mole oxygen to two moles of the sulfide:
O_ii + 2(CH₃)₂S ii(CH_iii)₂SO
If this process is 83% efficient, how many grams of DMSO could exist produced from 65 thou of dimethyl sulfide and excess O₂?; (a) 68 chiliad; (b) 75 k; (c) 83 g; (d) 51 thousand; (e) 47 g
eleven.: The formation of ethyl booze (C_twoH₅OH) by the fermentation of glucose (C₆H₁₂O_half-dozen) may be represented by:
C₆H₁₂O_{half dozen} 2C_iiH₅OH + 2CO₂
If a particular glucose fermentation process is 87.0% efficient, how many grams of glucose would be required for the product of 51.0 g of ethyl alcohol (C₂H_fiveOH)?; (a) 68.3 k; (b) 75.one 1000; (c) 115 g; (d) 229 g; (east) 167 yard
12.: The limiting reagent in a chemical reaction is one that:; (a) has the largest tooth mass (formula weight).; (b) has the smallest tooth mass (formula weight).; (c) has the smallest coefficient.; (d) is consumed completely.; (due east) is in excess.
xiii.: If 5.0 thousand of each reactant were used for the the post-obit process, the limiting reactant would be:
2KMnO_iv +5Hg₂Cl_ii + 16HCl 10HgCl_ii + 2MnCl₂ + 2KCl + 8H_iiO; (a) KMnO₄; (b) HCl; (c) H_iiO; (d) Hg₂Cl₂; (e) HgCl₂
14.: What mass of ZnCl_ii can be prepared from the reaction of 3.27 grams of zinc with three.thirty grams of HCl?
Zn +2HCl ZnCl₂ + H₂; (a) vi.89 chiliad; (b) 6.82 1000; (c) 6.46 grand; (d) half-dozen.17 g; (due east) six.02 g
15.: How many grams of NH₃ tin be prepared from 77.three grams of N₂ and 14.two grams of H₂? (Hint: Write and balance the equation first.); (a) 93.ix g; (b) 79.7 thousand; (c) 47.0 g; (d) 120.0 thou; (eastward) thirteen.3 1000
16.: Silicon carbide, an abrasive, is made by the reaction of silicon dioxide with graphite. SiO₂ +3C SiC + 2CO
If 100 chiliad of SiO₂ and 100 g of C are reacted as far every bit possible, which one of the following statements will be correct?; (a) 111 k of SiO_ii will be left over.; (b) 44 g of SiO₂ volition be left over.; (c) 82 thou of C will exist left over.; (d) forty thou of C will exist left over.; (e) Both reactants will be consumed completely, with none of either left over.
17.: Calculate the mass of 6.00% NiSO_iv solution that contains 40.0 k of NiSO₄?; (a) 667 grand; (b) 540 k; (c) 743 g; (d) 329 g; (e) none of these
18.: How many grams of water are contained in 75.0 grams of a six.ten% aqueous solution of M₃PO_four?; (a) 75.0 g; (b) 73.2 m; (c) seventy.4 m; (d) 68.1 g; (e) 62.eight g
19.: The mass (in grams) of FeSO₄ 7H₂O required for preparation of 125 mL of 0.90 M solution is:; (a) 16 thou; (b) 25 g; (c) 13 g; (d) 31 g; (e) 43 chiliad
20.: What is the molarity of phosphoric acrid in a solution labeled 20.0% phosphoric acid (H_threePO₄) by weight with a density = 1.12 g/mL?; (a) 0.98 1000; (b) 2.3 K; (c) two.seven M; (d) 3.0 M; (east) 3.half dozen M
21.: How many mL of 17 M NH_iii must be diluted to 500.0 mL to brand a 0.75 M solution?; (a) thirteen mL; (b) 22 mL; (c) 39 mL; (d) 73 mL; (e) none of these
22.: How many grams of Ag_iiCO₃ are required to react with 28.v mL of 1.00 M NaOH solution?
Ag₂CO_iii +2NaOH Ag₂O + Na_twoCO₃ + H_iiO; (a) vii.87 g; (b) 3.93 g; (c) 15.7 g; (d) 10.8 g; (e) 8.16 g
23.: How many milliliters of 0.200 M NH₄OH are needed to react with 12.0 mL of 0.550 Thousand FeCl_iii?
FeCl_three + 3NH₄OH Fe(OH)_three + 3NH_fourCl; (a) 99.0 mL; (b) 33.0 mL; (c) 8.25 mL; (d) 68.viii mL; (east) 132 mL
24.: When 250. mL of a 0.fifteen M solution of ammonium sulfide (NH₄)_iiS is poured into 120. mL of a 0.053 M solution of cadmium sulfate CdSO₄, how many grams of a yellow precipitate of cadmium sulfide CdS are formed? The other product is (NH₄)₂SO_iv. (Hint: Write out and rest the equation. Is this a limiting reagent problem? ); (a) v.four g; (b) 0.92 g; (c) ii.6 g; (d) 1.9 g; (e) 530 one thousand

Answers:

i. (a) 2. (b) three. (d) 4. (e) 5. (e) six. (east) 7. (a) eight. (d) 9. (c) 10. (a) 11. (c) 12. (d) 13. (d) 14. (d) fifteen. (b) xvi. (d) 17. (a) 18. (c) 19. (d) 20. (b) 21. (b) 22. (b) 23. (a) 24. (b)

To report whatsoever corrections, please e-mail Dr. Wendy Keeney-Kennicutt.

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Source: https://www.chem.tamu.edu/class/fyp/mcquest/ch3.html

what is the mass of calcium carbonate needed to produce 87.0 l of carbon dioxide at stp

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