In # 14, if 5 mol of HCI reacts with 2.5 mol of O_2, how many mot of Cl_2 will b
ID: 929867 • Letter: I
Question
In # 14, if 5 mol of HCI reacts with 2.5 mol of O_2, how many mot of Cl_2 will be made 4.5 4.0 2.5 3.0 Of the following acids the strongest one is HC_2H_3O_2 HF HI HCN Choose the INCORRECT oxidation state S is + 4 in H_2SO_3 C is + 2 in HCOOH Fe is +2 in Fe_2O_3 C is 0 in H_2CO Calculate the [ OH - ] if [ H_3O+ ] of a solution is 7.5 a 10^-5 M 2.0 times 10^-5 1.3 times 10^-10 3.4 times 10^-6 1.0 times 10^-14 In # 18, the solution is acidic basic neutral don't know, not enough info The pH of 0.010M HNO_3 ( a strong acid ) is: 0 1 2 2.5 Problems: (# 21- 31) : Calculate the density of nitrogen gas at 125 degree C and a pressure of 755 mm Hg. A sample of gas has an initial volume of 2.8 L at a pressure of 755 mm Hg. If the volume of the gas expands to 3.7 L what will the pressure become Ammonium chloride decomposes when heated according to the following unbalanced equation: ( NH_4)_2 C0_3 (s) rightarrow N_2 (g) + C0_2 (g) + H_2O(g) Calculate the total volume of gas produced at 22 degree C and 1.02 atm by the complete decomposition of 11.83 g of ammonium carbonate. Consider the following reaction In which a precipitate is made. Li_2S (aq) + Co (NO_3) _2 (aq)rightarrow 2 LiNO_3 (aq) + CoS (s) What volume of 0.150 M Li_2S solution Is required to completely react with 125 ml of 0.150 M Co (NO3) 2Explanation / Answer
15) need data from 14
16)
Strongest acid is HI, avoid HF since ti will form equilibrium
17)
C) since Fe2O3 --> has Fe+3 stat not +2
18)
[OH-] = kw/[H+] = (10^-14)/(7.5*10^-5) = 1.3333333*!0^-10
19)
since [H+] ions are > 10^-7, this must be acidic
20)
pH = -log(0.01) = 2
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