Question

Consider the reaction CaSO4(s)⇌Ca2+(aq)+SO2−4(aq) At 25 ∘C the equilibrium constant is Kc=2.4×10−5 for this reaction. If...

Consider the reaction CaSO4(s)⇌Ca2+(aq)+SO2−4(aq) At 25 ∘C the equilibrium constant is Kc=2.4×10−5 for this reaction. If the resulting solution has a volume of 1.1 L , what is the minimum mass of CaSO4(s) needed to achieve equilibrium? Express your answer to two significant figures and include the appropriate units.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The solids are not part of the equilibrium constant, since its concentration is an intensive property and not dependent on the amount of substance. Equilibrium constant for the reaction is:

Concentration of CaSO4 is constant

concentration of Ca+2 y SO4-2 are equal

     

Therefore

for there is such concentration of ions, as the ratio is equimolar must be equal amount of CaSO4

Mass of CaSO4 (MW 136,14g/mol)

-   

For a solution of 1,1L :

Minimum mass of CaSO4(s) needed to achieve equilibrium is 0,74g for a solution of 1,1L.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
At 25 °C, CaCrO4 (s) < ------- > Ca2+ (aq) + CrO42- (aq) has an equilibrium...
At 25 °C, CaCrO4 (s) < ------- > Ca2+ (aq) + CrO42- (aq) has an equilibrium constant Kc = 7.1 x 10-4. What are the equilibrium concentrations of Ca2+ and CrO42- in a saturated solution of CaCrO4?
Consider the following reaction: Fe3+(aq)+SCN−(aq)⇌FeSCN2+(aq) A solution is made containing an initial [Fe3+] of 1.0×10^−3 M...
Consider the following reaction: Fe3+(aq)+SCN−(aq)⇌FeSCN2+(aq) A solution is made containing an initial [Fe3+] of 1.0×10^−3 M and an initial [SCN−] of 7.8×10^−4 M . At equilibrium, [FeSCN2+]= 1.7×10^−4 M . Part A Calculate the value of the equilibrium constant (Kc). Express your answer using two significant figures. Kc =
A.) The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=3.9 Initially, only A and...
A.) The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=3.9 Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and include the appropriate units. B.)What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ? Express your answer to two significant figures and include the...
The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=7.5 Part A Initially, only A...
The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=7.5 Part A Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and include the appropriate units. part b What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M ? Express your answer to two significant figures...
The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=7.5 Part A Initially, only A...
The reversible chemical reaction A+B⇌C+D has the following equilibrium constant: Kc=[C][D][A][B]=7.5 Part A Initially, only A and B are present, each at 2.00 M. What is the final concentration of A once equilibrium is reached? Express your answer to two significant figures and include the appropriate units. Part B What is the final concentration of D at equilibrium if the initial concentrations are[A] = 1.00 M and [B] = 2.00 M ? Express your answer to two significant figures and...
Calculate the equilibrium constant at 25 ∘C for each of the following reactions: Part A Cd(s)+Sn2+(aq)→Cd2+(aq)+Sn(s)...
Calculate the equilibrium constant at 25 ∘C for each of the following reactions: Part A Cd(s)+Sn2+(aq)→Cd2+(aq)+Sn(s) Express your answer using one significant figures. K = 6×108 SubmitMy AnswersGive Up Correct Part B 2Al(s)+3Cd2+(aq)→2Al3+(aq)+3Cd(s) Express your answer using one significant figures. K = 5×10127 SubmitMy AnswersGive Up Correct Part C Cr2O2−7(aq)+6Fe2+(aq)+14H+(aq)→2Cr3+(aq)+6Fe3+(aq)+7H2O(l) Express your answer using one significant figures. K = 2•1057 SubmitMy AnswersGive Up Just need Part C
Write the equilibrium‑constant expression for the reaction A(s)+3B(l)↽−−⇀2C(aq)+D(aq)A(s)+3B(l)↽−−⇀2C(aq)+D(aq) in terms of [A],[A], [B],[B], [C],[C], and [D],[D],...
Write the equilibrium‑constant expression for the reaction A(s)+3B(l)↽−−⇀2C(aq)+D(aq)A(s)+3B(l)↽−−⇀2C(aq)+D(aq) in terms of [A],[A], [B],[B], [C],[C], and [D],[D], as needed. Note that ?c,Kc, which is sometimes symbolized as ?eq,Keq, denotes that the equilibrium constant is expressed using molar concentrations. For this question, ?cKc means the same thing as ?eq.
Calculate the value of the equilibrium constant, Kc, for the following reaction. FeS(s) + 6CN-(aq) <----->...
Calculate the value of the equilibrium constant, Kc, for the following reaction. FeS(s) + 6CN-(aq) <-----> [Fe(CN)6]4-(aq) + S2-(aq) Kc=______? The solubility product constant, Ksp, for FeS is 1.6 × 10^–19, and the formation constant, Kf, for [Fe(CN)6]^4– is 1.5 × 10^35 Kc=______
At 100 ∘C, Kc=0.078 for the reaction SO2Cl2(g)←−→SO2(g)+Cl2(g) In an equilibrium mixture of three gases, the...
At 100 ∘C, Kc=0.078 for the reaction SO2Cl2(g)←−→SO2(g)+Cl2(g) In an equilibrium mixture of three gases, the concentrations of SO2Cl2 2 and SO2 are 0.130 M and 0.125 M respectively. Part A What is the partial pressure of Cl2 in the equilibrium mixture? Express your answer using two significant figures.
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 79 ∘C , where [Fe2+]= 3.30 M and [Mg2+]= 0.310 M...
Consider the reaction Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 79 ∘C , where [Fe2+]= 3.30 M and [Mg2+]= 0.310 M . Part A What is the value for the reaction quotient, Q, for the cell? Part B What is the value for the temperature, T, in kelvins? Express your answer to three significant figures and include the appropriate units. Part C What is the value for n? Express your answer as an integer and include the appropriate units (i.e. enter mol for moles). Part...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT