AP Chem

posted by .

For the following equilibrium system, which of the following changes will form more CaCO3?
CO2(g) + Ca(OH)2(s) <--> CaCO3(s) + H2O(l)
deltaH(rxn) = -113 kJ

My choices are:
a) Decrease temperature at a constant pressure (no phase change)

B) Increase volume at a constant temperature

C) Increase partial pressure of CO2

D) Remove one-half of the initial CaCO3

I was thinking that it would be A, C, and D. Is that correct?

  • AP Chem -

    A and C are right. Removing 1/2 CaCO3 won't affect the equilibrium AS LONG AS there is a smidgen of CaCO3 solid present. A speck must be present to attain equilibrium; more or less than that has no effect.

  • AP Chem -

    Is that because it's a solid and not a gas?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Consider the following equilibrium: CaCO3(s)<->Ca 2+(aq) + CO3 2-(aq) Which of the following reagents, when added to the equilibrium system, would cause more CaCO3 to dissolve?
  2. Chemistry

    Shown below is the chemical equation for the thermal decomposition of calcium carbonate. CaCO3(s) <-> CaO(s) + CO2(g) H°rxn = 175 kJ How will the amount (not concentration) of CaCO3(s) change with the following stresses?
  3. chemistry 101

    Consider the following reaction. CaO (s) + CO2 (g) = CaCO3 (s) A chemist allows 14.4 g of CaO and 13.8 g of CO2 to react. When the reaction is finished, the chemist collects 19.4 g of CaCO3. Determine the limiting reactant, theoretical …
  4. Chemistry(Please check)

    The equilibrium constant, Kc for the system, CaO(s) + CO2(g) == CaCO3(s), is A. Kc = (CaO) (CO2) / (CaCO3) B. Kc = (CO2) C. Kc = (CaCO3)/(CaO) D. Kc = (CaCO3) / (CaO) (CO2) E. Kc = 1 / (CO2) My answer is (CaCo3) / (CaO)(CO2). Would …
  5. chem

    For the following equilibrium system, which of the changes will form more CaCO3 (more moles CaCO3)?
  6. chemistry

    Which of the changes will form more CaCO3 (more moles CaCO3)?
  7. chemistry

    Calculate the temperature (K) at which the equation as written is at equilibrium. Express your answer to three significant figures. CaO(s) + CO2(g) → CaCO3(s) ∆G°f (kJ/mol) CaO(s)-604.0 CO2(g)-394.4 CaCO3(s)-1128.8 ∆H°f …
  8. Chemistry! Please Help!

    Lime (CaO) is used to prevent SO2 from escaping smokestacks of coal burning power plants by the formation of solid CaSO4•2H2O also known as the mineral gypsum. One of the important reactions in the overall process is the dissociation …
  9. Chemistry

    Given the reaction 2HI (aq) + CaCO3(s) = CaI2(aq)+CO2(g)+H2O(l) What volume of of CO2 can be produced from 255mL of 3.0M HI and 75.2g of CaCO3 at STP?
  10. CHEM 101

    Calculate ΔHrxn for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions and given ΔH values: Ca(s)+CO2(g)+12O2(g)→CaCO3(s), ΔH= -812.8 kJ 2Ca(s)+O2(g)→2CaO(s), ΔH= -1269.8 kJ

More Similar Questions