LeChatelier's Principle 12.48 The following reaction is in equilibrium in lake water: HCO, (aq) + H'(aq) = H₂CO,(aq) Predict the change in the reaction quotient, Q, for each disturbance below and use that prediction to explain how the equilibrium is shifted by the stress. (a) NaHCO, is added to the lake. (b) H.CO, is added. (c) NaOH is added.
LeChatelier's Principle 12.48 The following reaction is in equilibrium in lake water: HCO, (aq) + H'(aq) = H₂CO,(aq) Predict the change in the reaction quotient, Q, for each disturbance below and use that prediction to explain how the equilibrium is shifted by the stress. (a) NaHCO, is added to the lake. (b) H.CO, is added. (c) NaOH is added.
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:LeChatelier's Principle
12.48 The following reaction is in equilibrium in lake water:
HCO, (aq) + H*(aq) = H₂CO, (aq)
Predict the change in the reaction quotient, Q, for each
disturbance below and use that prediction to explain how
the equilibrium is shifted by the stress.
(a) NaHCO, is added to the lake.
(b) H₂CO, is added.
(c) NaOH is added.
12.49 In the following equilibrium in a closed system, indicate
how the equilibrium is shifted by the indicated stress:
HF(g) + H₂O()H,O*(aq) + F(aq)
(a) Additional HF(g) is added to the system.
(b) Water is added.
(c) Ca(NO,), solution is added, and CaF, precipitates.
(d) The volume is reduced.
(e) KOH is added.
(f) A catalyst is added.
12.50 In each of the reactions, how does the equilibrium re-
spond to an increase in pressure?
(a) 2 SO₂(g) + O₂(g) 2 SO,(g)
(b) H₂(g) + 1,(g) 2 HI(g)
(c) 3 H₂(g) + N₂(g) = 2 NH₂(g)
12.51 In each of the reactions below, tell how the equilibrium
responds to an increase in pressure.
(a) CaCO,(s)
CaO(s) + CO.(g)
(b) NO.(g) 2 NO.(g)
(e) HCO, (aq) + H(aq) = H₂CO,(aq)
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