Which of the following sets of ions is present in calcium hydrogen phosphate, CaHPO 4? a....
If the concentration of phosphate ions ([PO43-1) in a saturated solution of Ca3(PO4)2 is known, which expression should be used to calculate the solubility product constant (Ksp) for Ca3(PO4)2? Kp - 8 [PO43-15/27 Ksp - 3(PO4"-1/2 Ksp = 27 (PO43-1978 Ksp -9 [PO43-1514 Kup 4(PO43-119
Solutions of calcium hydroxide, Ca(OH)2, and sodium phosphate, Na3PO4, are mixed according to the following chemical equation. What is the ionic equation for the reaction The molecular equation is: 3Cu(OH)2(aq) + 2Na3PO4(aq) + Caz(PO4)2 (s) + NaOH(aq) 3Ca2+(aq) + 20H(aq) + 6Na*(aq) + PO43- (aq) - 3Ca2+ (aq) + PO43- (aq) + 6NaOH(aq) 3Ca2(aq) + OH2" (aq) + 2Na3aq) + PO43- (aq) - Ca3(PO4)2 (s) + 2Nazt (aq) + OH2" (aq) 3Ca2+ (aq) + 20H(aq) + 6Na*(aq) + PO43-lag) -...
QUESTION 2 Which of the following molecules will not be part of the equilibrium constant for this reaction: 4 Fe (s) + 3 02 (9) 2 Fe203 (s) Select all that apply Fe 02 Fe2O3 QUESTION 3 Which of the following molecules will not be part of the equilibrium constant for this reaction: Ca3(PO4)2 (s) = 3 Ca2+ (aq) + 2 PO43- (aq) Select all that apply Ca3(PO4)2 Ca2+ PO43-
Calcium phosphate (Ca3(PO4)2) is sparingly soluble in water. If the concentration of calcium ions in solution at equilibrium is 1.0 x 10°M, what is the Ksp of calcium phosphate? a. 4.4 x 10-46 b. 2.2 x 10-46 c. 1.1 x 10-46 d.5.5 x 10-47 a. b. O C. d. KESCION 20 5 pts 14a) Sodium chromate is added to a solution of 0.0060 M 5r2+ What is Q if the final concentration of Cro 2 is 0.0030 M? a. 7.2...
Which of the following species is present at the lowest concentration in an aqueous solution of H3PO4? a) H2PO4- b) H3O+ c) H3PO4 d)| HPO42- e) PO43-
Part A Which of the following sets of ions are isoelectronic? Check all that apply. S2_, Ca2+, K+ Cs!, Ba2+, La3+ O 02-, S2, Se Submit Request Answer Provide Feedback
please help!
3) Which one of the following sets of ions shows an order of lowest to highest hydration energy? ) Ca2+ < K+ < Rb+ B) Ca2+ < Nat < Mg2+ Lit <kt < Cs b) Mg2+ < Ca2+ < Ba2+ E) Rb* <K* < Ca2+
Q4. Level 1 (Unit 18, L.G. 1) Which of the following is the correct dissociation reaction for calcium hydroxide in water? A. CaOH → Cat + OH B. CaOH → Cat + O2- + H+ C. Ca(OH)2 → Ca2+ + 2OH- D. Ca(OH)2 → Ca2+ + 202- + 2H+ E. Ca(OH)2 → Ca2+ + (OH-)2
11:08 ..: LTE O < Question 17 of 29 Submit Which one of the following represents the net ionic equation for the reaction of Ca(NO3)2 with LizPO ? A) 3 Ca(NO3)2 (aq) + 2 Li3PO4 (aq) → Ca3(PO4)2 (s) + 6 NaNO3 (aq) B) Ca2+ (aq) + PO43- (aq) → Ca3(PO4)2 (s) C) 3 Ca2+ (aq) + 2 PO43- (aq) → Ca3(PO4)2 (s) D) Lit (aq) + NO3- (aq) → LINO3 (s)
Which of the following sets of ions are isoelectronic? Check all that apply. O CI", Br, I o 52-, Ca2+, K+ 0 Cst, Ba2+, La3+ Submit Request Answer