PLS HELP chem quiz - 6 questions?

Posted on 2017-09-26 17:54:00 in Chemistry by DANI

1.) How many moles of hydrogen is formed when 3 mol of a aluminium react with excess hydrochloric acid according to the following equation? 

2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g) 

A. 3.0 
B. 4.5 
C. 6.0 
D. 9.0 

2.) 10 mol of C2H3Cl is mixed together with 10.0 mol of O2. Which substance is the limiting reagent? 

A. Chloroethene, C2H3Cl 
B. Oxygen, O2 
C. Neither reagent is limiting 
D. There is not enough information to answer this question 

3.) What is the amount, in mol, of H2O produced when 10.0 mol of C2H2Cl and 10.0 mol of O2 are mixed together, and the above reaction goes to completion? 

A. 4.00 
B. 8.00 
C. 10.0 
D. 20.0 

The following information is related to questions 4-6 

0.600 mol of aluminium hydroxide is mixed with 0.600 mol of sulfuric acid, and the following reaction occurs: 

2Al(OH)3(s) + 3H2SO4(aq) → Al2(SO4)3(aq) + 6H2O(l) 

4.) State the limiting reactant (explain if you can) 

5.) Calculate the mass of AL2(SO4)3 produced (in g). Summarize how your answer. 

6.) Determine the amount (in g) of excess reactant remains. Summarize how you calculated your answer.

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