题目内容

For the reaction 2H2S(g) ⇌2H2(g) + S2(g)at a particular temperature,K = 1.6 x 10-2What is the value of K for:½ S2(g) + H2(g) ⇌ H2S(g)

A. 2.62 x 10-4
B. 1.26
C. 7.9
D. 3.8 x 103
E. 61.7

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For the equilibrium system,2SO2 (g) + O2 (g) ⇌ 2SO3 (g), the result ofremoving someSO3(g) from the system is that:

A. more SO3(g) is produced to replace that which is removed
B. Kc decreases
C. more SO2 (g) and O2 (g) are produced
D. Kc increases

In the following reaction, which species is acting as an acid?HSO4– (aq) + CH3NH2 (l) → SO42– (aq) + CH3NH3+(aq)

A. SO42–(aq)
B. CH3NH2(l)
CH3NH3+(aq)
D. HSO4–(aq)

What is the pH of 5.04 x 10-3 mol L-1 solution of HI? Is it acidic, basic,or neutral?

A. pH 11.7; acidic
B. pH 11.7; basic
C. pH 2.3; acidic
D. pH 2.3; basic

What is the conjugate acid of NH2-?

A. NH3
B. NH2-
C. NH22-
D. NH2

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