10. When an orange coloured crystalline compound 'A' was heated with common salt and concentrated sulphuric acid, an orange red coloured gas 'B' was evolved. The gas 'B' on passing through NaOH solution gave a yellow solution 'C'. The solution on reacting with an aqueous solution of lead acetate gave a yellow ppt. When H2O2 is added to an acidic solution of 'A', a blue peroxo species CrO5 is formed. (i) Name the crystalline compound (A). What is the gas (B)?signiting (ii) (iii) What is the yellow solution (C)? (iv) Write the reaction of (A) with H2O2 in acidic solu- tion to give CrO5.ping on

10. When an orange coloured crystalline compound 'A' was heated with common salt and concentrated sulphuric acid, an orange red coloured gas 'B' was evolved. The gas 'B' on passing through NaOH solution gave a yellow solution 'C'. The solution on reacting with an aqueous solution of lead acetate gave a yellow ppt. When H2O2 is added to an acidic solution of 'A', a blue peroxo species CrO5 is formed. (i) Name the crystalline compound (A). What is the gas (B)?signiting (ii) (iii) What is the yellow solution (C)? (iv) Write the reaction of (A) with H2O2 in acidic solu- tion to give CrO5.ping on

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Write the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. NH3 (aq) + H2O(1) =NH,* (aq) + OH(aq) K=-
R = 8.314 mol·K F = 96,485 mot AG = AG° + RT · In(Q) ΔΕΔΕ-).In(O) Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H*(aq) + 4 e¯ → 2 H20 (1) 1.229 2 z" (aq) Z2 (s) + 2 e 3+ (aq) + 3 е 0.426 A (s) 0.292 2 H20 (1) + 2 e G2+ (aq) + 2 e H2 (g) + 2 OH (aq) - 0.828 G (s) - 1.245 > M2+ (aq) + 2 e - 1.893 → M (s) A student constructs a voltaic electrochemical cell with two metal electrodes [metal G and metal A] in their respective aqueous nitrate solutions [G(NO3)2 and A(NO3)3]. Use this information, as well as the reduction potentials in the table above to complete each statement below. Consider the same cell from the above prompt. Calculate AG° in kJ/mol for this galvanic cell. Report your answer with 4 significant figures. You do not need to report units with your answer. If your value is negative, make sure to include a "-" symbol.
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Predict deltarH for this reaction: C2H4(g) + H2O(l) -> C2H5OH(l) using the enthalpy changes of the following reactions: C2H4(g) + 3O2(g) -> 2CO2(g) + 2 H2O(l); deltarH = -1411.1 kJ/mol-rxn C2H5OH(l) + 3O2(g) -> 2CO2 + 3 H2O(l); deltarH = -1367.5 kJ/mol-rxn Report your answer with units of kJ/mol-rxnIf you number is negative, include the negative symbol. If your number is positive, do not include the positive symbol.
(a) A silver wire is placed in a solution of CuCl₂. Does this reaction occur under standard conditions? O The reaction occurs. No reaction occurs. (b) Cl2 gas is bubbled into a solution of Nal. Write a balanced net-ionic equation. (Use the lowest possible coefficients. Specify states such as (aq) or (s). If a box is not needed, leave it blank.) 21 (aq) +C1₂(g) Calculate E, AG, and K. E = 0.82 AG = -158.235 K =7.345x10^13 →2Cl(aq) + 1,(s) The reaction occurs. O No reaction occurs. V kj Does this reaction occur, under standard conditions?
AG = AG° + RT · In(Q) ΔΕ ΔΕ-). In(Q) Half Reaction (Note: All given as reduction) E° (V) 02 (g) + 4 H*(aq) + 4 e¯ → 2 H20 (I) 1.229 |Z2 (s) + 2 e 2z (aq) 0.426 3+ |A°™ (aq) + 3 e A (s) 0.292 2 H20 (1) + 2 e H2 (g) + 2 OH¯ (aq) - 0.828 > 2+ G (aq) + 2 e¯ → G (s) - 1.245 M2+ (aq) + 2 e → M (s) - 1.893 A student constructs a voltaic electrochemical cell with two metal electrodes [metal G and metal A] in their respective aqueous nitrate solutions [G(NO3)2 and A(NO3)3]. Use this information, as well as the reduction potentials in the table above to complete each statement below. The metal electrode A is... o not changing in mass. o increasing in mass. o decreasing in mass. Question 4 The metal solution A(NO3)3 is... o increasing in concentration. o not changing in concentration. o decreasing in concentration.
9. Use the following reaction from the lab to calculate the following: 2Na3PO4 12H₂O(s) + 3BaCl₂ 2H₂O(s) →→→ Bag (PO4)2 (s) +6NaCl(aq) +30H₂O(1) If 2 grams of Ba3(PO4)2 (s) (precipitate) are made, how many grams of BaCl₂ 2H₂O did you start with? If 1.5 grams of Ba3(PO4)2 (s) (precipitate) are made, how many grams of 2Na3PO4. 12H₂O did you start with? ©2022 F'22/S'23 Chemistry I Lab Manual 103 EXPERIMENT 5
5. The oxidation of ferrous iron (Fe2+) to ferric ion (Fe³+) by molecular oxygen can be described by the following reaction: 4Fe²+ (aq) + O₂(aq) + 4H*(aq) = 4Fe³+ (aq) + 2H₂O(l) (1) Using free energies of formation, calculate the equilibrium constant for this reaction at 25 deg C. (2) For a water in equilibrium with the atmosphere, a pH of 2.0, and a total soluble iron concentration of 1 mg/L, calculate the concentrations of Fe2+(aq) and Fe³+(aq).