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GENERAL CHEMISTRY(LL)-W/MASTERINGCHEM.
- 4G VOLTE O 76 14 4:58 7 February 2021 4:57 PM (ii) Calculate the lattice energy of Silica oxide (SiO2) from the data given below: Si (g) - Si (s) AH° = -454 kJ mol-1 S1A+ (E) + 4e" Si (3) AH° = -9949 kJ mol-1 20 (g) – 02 (3) AH° = -498 kJ mol-1 02 (3) 0 (g) + 2e AH° = -737 kj mol-1 Si (s) + 02 (3) → SiO2 (s) s14+ (6) - 202- (3) – SiO2 (s) AHf (SIO2)= -910.9 kj mol1 AH°lattice = ? Share Favourite Edit Delete Morearrow_forwardOo.172. Subject :- Chemistryarrow_forwardThe reduction potential of permanganate ion (+7 oxidation state) in acidic aqueous solution is given by MnO, (aq) + 8 H¿O*(aq) + 5 e¯ → Mn²*(aq) + 12 H,O(€) E° = 1.491 V whereas that of the analogous fifth-period species, pertechnetate ion, is TcO (aq) + 8 H3O*(aq) + 5 e¯ → Tc²+ (aq) + 12 H2O(€) E° = 0.500 V Which is the stronger oxidizing agent, permanganate ion or pertechnetate ion?arrow_forward
- (1) A metal that gets covered with a protective film of its oxide (Al, Cu, Ag)(2) A metal which burns in air with golden flame (Zn, K, Na)(3) A metal which can displace hydrogen from boiling water as well as steam (K, Zn, Fe)arrow_forwardKsp for Co(OH)2 is 5.92x10^-15arrow_forward(k) Antimony (V) iodide (1) Gold (III) sulfide (m) Platinum (IV) phosphide (n) Bismuth (II) perchlorate (0) Mercury (I) cyanidearrow_forward
- (f) Potassium permanganate (g) Sodium hypochlorite (h) Beryllium bicarbonate (1) Ammonium dichromate (G) Iron (II) chloridearrow_forwardplease answer 6c, 6d, 6e and 6f. Thank you.arrow_forwardUsing the thermodynamic tables and the enthalpy of formation for one mole of potassium chlorate solid, find the enthalpy change for formation of 15.0 g KClO3 (s) a. – 48.7 kJ b. + 5.97 x 103 kJ c. – 397.7 kJ d. – 3.25 kJ e. – 5.97 x 103 kJ f. none of thesearrow_forward
- The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 4 NH; (g) + 5 0, (g) = 4 NO (g) + 6 H,0 (g) K1 2 NO (3) +0, (g) = 2NO, (g) K2 The net reaction is: 4 NH; (g) + 70, (g) = 4 NO, (g) + 6 H,0 (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K = oloarrow_forwardConsider the photochemical isomerization A= B. At 650. nm, the quantum yields for the forward and reverse reactions are 0.83 and 0.52, respectively. If the molar absorptivities at 650. nm of A andB are 1.2×103 L·mol-1.cm¬1 and 4.5x102 L·mol-1.cm-1, respectively, what is the ratio [B]/[A] in the photostationary state? [B] = 4.0 [A] Supporting Materials Periodic Table E Constants and I Supplemental Data Factorsarrow_forwardT h e m a s s o f C a i n a w a t e r s a m p l e c o n t a i n i n g C aS O 4 t h a t i s p r e c i p i t a t ed a s C a 2 P 2 O 7 i s c a l c u l at e d a s : choose: w t C a 2 P 2 O7 * [ a t o m i c m a s s C a / ( 2 ) ( F W C a 2 P 2 O 7 )] w t Ca2 P 2 O 7 * [ ( 2 ) ( a t om i c m a s s Ca ) / F W Ca 2 P 2 O 7 ] w t C aS O 4 * [ ( 2) ( a t o m i c m a s s C a ) / F W C a S O 4 ] w t C a S O 4 * [ a t o mi c m a s s Ca / ( 2 ) ( FW C a S O4 ) ]arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning