
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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I want Q2 (a) and (b)

Transcribed Image Text:Q1 (a) Read the following sentences carefully and briefly justify the answer:
(i)
Combustion of Benzene produces carbon rich sooty flame.
(ii)
Standard Hydrogen Electrode (SHE) is used to measure
standard potential of electrodes.
(ii)
Water boiling in a steel bowl is an open thermodynamic system.
(iv)
22.4 liter O2 gas at STP will have 6.023x1023 O2 molecules.
Q2 (a) Explain why KCI is an ideal salt to be used in salt bridge.
(b) | Draw and describe the Cu-Zn electrochemical cell with both half-cell
reactions.
(c) Why the IUPAC name of C2He is Ethane?
(d) Consider a mixture of 2g NaCl and 4g KCI. Calculate mole fraction of
both species.
(e) Differentiate between H3PO, and H2C20..
Q3 (a) Determine the mass of Al2(SO.)3 required to prepare 0.01N solution in
100 ml volume.
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- When Q E°cllarrow_forwardf) 엿 1- 2- H+ Br 3- Ht, H2O 1-O3, CH2Cl2, -78 °C 2- CH3SCH3 CgH1402arrow_forward(iii) Use the equation below and data from the table to calculate a value for the C=C bond energy in ethene. Bond H-H C H C-C Mean bond energy /kJ mol- 436 418 348 Нн нн C +H-H H-C-C-H AH =-136 kJ mol %3D нн нн Ethene Ethanearrow_forward
- 2A + b <-> C. Kc = 9.1C + D <-> 2E. Kc = 3.2 calculate Kc for: A + 1/2B + 1/2D <-> Earrow_forwardConsider the problem below: (Equation 1) 4 CO(g) + 4 H2O1) ---> C4H8(1) + 4 O2(g) AH = 890.6 kJ/mol %3D (Equation 2) CO2(g)* ---> CO(g) + 1/2 O2(g) AH = 90.6 kJ/mol (Equation 3) C4H8(1) + 6 O2(g) ---> 4 CO2(g) + 4 H2O1) AH = ??????? %3D To find AH for equation 3 you must: Screen Reader Version Consider the problem below: (Equation 1) 4 CO(g) + 4 H2O(1) arrow C4H8(1) + 4 O2(g) AH = 890.6 kJ/mol %3D (Equation 2) CO2(g) arrow C O(g) + 1/2 O2(g) AH = 90.6 kJ/mol %3D (Equation 3) C4H8(1) + 6 O2(g) arrow 4 CO2(g) + 4 H2O)) AH = ??????? To find AH for equation 3 you must: O multiply equation 1 only multiply equation 2 only multiply equation 1 and equation 2 O multiply neither equation 1 nor equation 2.arrow_forward62arrow_forward
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