LUISder the following reaction and answer questions 6 and 7 2 Al(s) +-6HChaq 2AI
ID: 704449 • Letter: L
Question
LUISder the following reaction and answer questions 6 and 7 2 Al(s) +-6HChaq 2AIC,(aq) + 3H2(g) - 6. The number of moles of hydrogen produced from the reaction of 1 mole Al and 2 moles HCí is: a)1 b) 1.5 7. 1.00 mole aluminium ré ne lacid acts with excess hydrochlo according to the equation; The volume of gas produced at STP is; a)3 L b) 22.4 L d) 33.6 L c. 8. When aqueous solutions of sodium sulfide, Na2s, and nickell) b) Ni(NO3)2 c) Nis 9. How many of the following metals will react with zinc ions nitrate, Ni(NO3)2 are mixed the precipitate is likely to be a) NaCl d) NaCI + Nis producing metalic zinc: Mg Cu, Pt, Ca a)2 Of the following, which sample contains the greatest number of c) o d) 3 10. moles of chloride ions? a) 100 ml 0.10 M NaC(a?) b)75 ml, 0.10 M MgCl2(aq) c) 125 mL, 0.10 M NaClag)d)75 mL, 0.05 M FeCl 11. Which of the following is a strong acid? 11)H) d) CH3CO2H IF(aq)c) KOH(aq) 12. Which of the following gas law relationships is incorrect a) V- CT, with pressure and amount of gas constant b) P CV, with temperature and amount of gas constant ith temperature and pressure constant af gas constantExplanation / Answer
I am solving Q6 and Q7 since they are the part of paragraph question as per Chegg guidelines, post multiple question to get the remaining answers
The reaction is
2Al(s) + 6HCl(aq) ------------- AlCl3(s) + 3H2(g)
6)
2 moles of Al will react with 6 moles of HCl
Hence 1 mole of Al will require 3 moles of HCl
So HCl is the limiting reagent
6 moles of HCl gives 3 moles of H2
Hence moles of H2 formed = 3/6 * 2 = 1 moles
Correct answer is Option A
7)
2 moles of Al yields 3 moles of H2(g)
So, 1 mole of Al gives 1.5 moles of H2(g)
1 mole at STP contains 22.4 L
Hence volume of gas will be 22.4L * 1.5 = 33.6 L
Correct answer is Option D
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