Question 7
Which of the following occurs when the weak base
methylamine, CH3NH2, is dissolved in water?
A very small number of methylamine molecules break up.
A very small number of water molecules takes an H+ from
methylamine.
A very large number of methylamine molecules take an H+ from
water.
A very small number of methylamine molecules take an H+ from
water.
Question 8
The balanced chemical equation of a reaction is shown
below:
4 Ag (s) + 2 H2S (g) + O2 → 2 Ag2S (s) + 2 H2O
(l)
If 0.36 moles of Ag, 0.32 moles of H2S, and 0.15 moles
of O2 are brought together and allowed to react, then:
H2S (g) is the limiting reactant.
O2 (g) is the limiting reactant.
there are 0.400 moles of H2S present in excess.
Ag (s) is the limiting reactant.