Interpretation: The method to remove the gold from a gold-plated object using an electrolytic cell needs to be explained.
Concept Introduction: In an electrolytic cell, electrical energy is used to generate a non-spontaneous
Explanation of Solution
In order to remove the gold from a gold-plated object, the positive electrode of the power source is connected to the gold object and the negative electrode is connected to another metal. Here, the gold object acts as an anode, and oxidation of gold takes place. Due to the oxidation of gold from the gold-plated object, gold gets removed from it.
Chapter 21 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
- Consider the following Figure 2 and two atoms that are initially an infinite distance apart, x =00, at which point the potential energy of the system is U = 0. If they are brought together to x = x, the potential energy is related to the total force P by dU dx = P Given this, qualitatively sketch the variation of U with x. What happens at x=x? What is the significance of x = x, in terms of the potential energy? 0 P, Force 19 Attraction Total Repulsion x, Distance Figure 2. Variation with distance of the attractive, repulsive, and total forces between atoms. The slope dP/dx at the equilibrium spacing xe is proportional to the elastic modulus E; the stress σb, corresponding to the peak in total force, is the theoretical cohesive strength.arrow_forwardDenote the dipole for the indicated bonds in the following molecules. H3C ✓ CH3 B F-CCl 3 Br-Cl H3C Si(CH3)3 wwwwwww OH НО. HO HO OH vitamin C CH3arrow_forwardFor the SN2 reaction, draw the major organic product and select the correct (R) or (S) designation around the stereocenter carbon in the organic substrate and organic product. Include wedge-and-dash bonds and draw hydrogen on a stereocenter. Η 1 D EN Select Draw Templates More C H D N Erasearrow_forward
- Q9: Explain why compound I is protonated on O while compound II is protonated on N. NH2 NH2 I IIarrow_forwardAN IR spectrum, a 13 CMR spectrum, and a 1 HMR spectrum were obtained for an unknown structure with a molecular formula of C9H10. Draw the structure of this compound.arrow_forwardAN IR spectrum, a 13 CMR spectrum, and a 1 HMR spectrum were obtained for an unknown structure with a molecular formula of C9H10. Draw the structure of this compound.arrow_forward
- (a) What is the hybridization of the carbon in the methyl cation (CH3*) and in the methyl anion (CH3¯)? (b) What is the approximate H-C-H bond angle in the methyl cation and in the methyl anion?arrow_forwardQ8: Draw the resonance structures for the following molecule. Show the curved arrows (how you derive each resonance structure). Circle the major resonance contributor.arrow_forwardQ4: Draw the Lewis structures for the cyanate ion (OCN) and the fulminate ion (CNO). Draw all possible resonance structures for each. Determine which form for each is the major resonance contributor.arrow_forward
- In the following molecule, indicate the hybridization and shape of the indicated atoms. CH3 N CH3 HÖ: H3C CI: ::arrow_forwardQ3: Draw the Lewis structures for nitromethane (CH3NO2) and methyl nitrite (CH3ONO). Draw at least two resonance forms for each. Determine which form for each is the major resonance contributor.arrow_forwardQ1: Draw a valid Lewis structures for the following molecules. Include appropriate charges and lone pair electrons. If there is more than one Lewis structure available, draw the best structure. NH3 Sulfate Boron tetrahydride. C3H8 (linear isomer) OCN NO3 CH3CN SO2Cl2 CH3OH2*arrow_forward
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