What volume of hydrogen gas can be produced at STP from the reaction of 1.00 mol

Question

What volume of hydrogen gas can be produced at STP from the reaction of 1.00 mol, 1.00 and sodium hydroxide, and 2.00 mol water? 2Al(s) + 2NaH(aq) + 6H_2O(l) rightarrow 2NaAl(OH) (A) 22.4 L (B) 33.6 L (C) 44.8 L (D) 67.2 L What volume of 0.5000 M KMnO_4 is required to react completely with 4.000 g of FeSO_4? 2KMnO_4(aq) + 10FeSO(aq) + 8H_2SO(aq) rightarrow 5Fe_2(SO_4)(aq) + K_2SO(aq) + 2MnSO(aq) + 8H (A) 263.5 ML (B) 94.88 mL (C) 15.18 mL (D) 10.54 mL. Calculate Delta H degree for the reaction 2C(s) + H_2(g) rightarrow C_2H_2(g). (A) -226.7 kJ (B) +226.7 kJ (C) -620.2 kJ (D) +620.2 kJ

Explanation / Answer

Q21.

find V of gas produced at STP if

1 mol o Al + 1 mol of Na(HO)" react

then

ratio is:

2 mol of Al = 3 mol of H2

1 mol of Al = 3/2 expected = 1.5 mol of H2

1 mol = 22.4 L

1.5 mol = 22.4*1.5 = 33.6 L expected

choose B

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