CP Assessment #1
Chemistry (General & Organic)
The characteristic structural feature of a hemiacetal is a carbon atom bonded to an -OH group and an -OR group. *
1 point
In the formation of LiF during exposure of lithium crystal to fluorine gas, fluorine undergoes reduction by acquiring an electron. *
1 point
Reaction with acidified potassium dichromate could be used to convert oxaloacetate into malate. *
1 point
If addition of a catalyst decreases the activation energy of a chemical reaction from 80 kJ mol-1 to 40 kJ mol-1, the rate of the reaction at standard temperatures will be doubled. *
1 point
The molecular formula of sodium chloride is NaCl, so each molecule contains one atom of sodium and one atom of chlorine. *
1 point
Deflection of α particles in Rutherford's gold foil experiements occurred due to repulsions between positively charged α-particles and positively charged gold nuclei. *
1 point
Although there is no hydrogen bonding in pure acetaldehyde, it is miscible with water due to hydrogen bonding. *
1 point
HCl is a stronger acid than H3O+. *
1 point
On an atomic spectrograph for a particular atom all spectra correspond to an amount of energy that less than or equal to the ionization energy of that atom. *
1 point
Crowding around the carbon holding the leaving group reduces the rate of SN2 substitution by increasing activation energy. *
1 point
The electron affinity of chlorine is primarily responsible for the stability of NaCl. *
1 point
The cell potential for a redox reaction is the sum of the reduction potentials of cathode and anode reactions. *
1 point
Br79 has a natural abundance of 50.69%. Br81 has a natural abundance of 49.31%. For this reason, the mass spec of dibromomethane will contain two molecular ion peaks of approximately the same height. *
1 point
In determining the oxidation number for an atom within a molecule, electrons in each bond are assigned to the more electronegative element. *
1 point
In the phosphorylation mechanism with tyrosine, serine, or threonine kinase, the hydroxyl group of the amino acid residue of the kinase substrate protein performs as a nucleophile in a phosphoryl transfer reaction. *
1 point
Increasing the intensity of the incoming light will increase the energy but not the number of electrons emitted in the photoelectric effect. *
1 point
Steric hindrance is a significant barrier to the SN2 reaction. *
1 point
A solution where [H3O+] = 3 × 10-5 has a pH of approximately 4.5. *
1 point
In KNO3 (potassium nitrate) the oxidation number of nitrogen is +5. *
1 point
The carbon in a nitrile group is double-bonded to nitrogen and sp2 hybridized. *
1 point
When light is incident on a metal surface, whether or not the photoelectric effect occurs will depend on the intensity of the light source. *
1 point
In biological phosphoryl transfer reactions the electrophilicity of the phosphorus atom is often enhanced by the Lewis acid effect of one or more calcium ions. *
1 point
At the melting point of water, the free energy of liquid water equals the free energy of ice. *
1 point
The empirical formula for hydrogen peroxide is H2O2. *
1 point
CO2 is a polar molecule. *
1 point
Sodium atoms are larger in size than chlorine atoms. *
1 point
Reaction with excess LiAl4 in THF converts acetoacetate into β-hydroxybutyrate. *
1 point
The number of donor atoms in a chelate complex equals the number of ligands. *
1 point
To formulate a 0.5M solution of KOH, you would add 0.5mol KOH to 1 liter of water. *
1 point
In the mechanism of a chemical reaction, the activated complex is a species that is created in one elementary step and destroyed in a subsequent step. *
1 point
A polyatomic molecule will be nonpolar only if its bonds are nonpolar. *
1 point
Water is a good solvent for SN1 substitution to form an alcohol. *
1 point
Alcohols are ideal substrates for SN1 and SN2 substitution reactions. *
1 point
The pKa of an acid increases with increasing temperature, indicating that the dissociation of the acid is endothermic. *
1 point
A chemical reaction would occur if solutions of CuCl2 and NaOH were mixed. *
1 point
Email *
E2 elimination would likely be favored in the reaction of a strong, hindered base with a secondary alkyl halide. *
1 point
The heat of vaporization represents the increase in the internal energy of a substance in transforming from a liquid to a gas. *
1 point
Phosphoryl transfer onto the hydroxyl group of tyrosine in a tyrosine kinase is a nucleophilic substitution mechanism with ADP as the leaving group. *
1 point
In UV spectroscopy absorbance of incident radiation is proportional to both the path length and concentration of the absorbing species. *
1 point
Methanethiol has a lower boiling point than methanol. *
1 point
If 9.0 g of water are decomposed, 1.0 g of hydrogen and 8.0 g of oxygen are obtaiined. *
1 point
A nonideal solution of two liquids is one where the total vapor pressure is lower or higher than predicted by Raoult's law. *
1 point
If the standard free energy change for an enzyme catalyzed biochemical reaction is positive, the reaction must be coupled with a second spontaneous reaction in order to proceed in the forward direction. *
1 point
Moving at the same speed, a proton has a shorter de Broglie wavelength than an electron. *
1 point
Although cis 1,2-dichloroethene has a higher boiling point than trans 1,2-dichloroethene, it has a lower melting point. *
1 point
The ionization energy of nitrogen is larger than that of oxygen. *
1 point
The four-membered lactam of penicillin is spontaneously esterified by transpeptidase active site serine without ATP cleavage despite the general tendency for amides to be more stable than esters. *
1 point
As bond order between atoms of the same pair of elements increases, bond length decreases, bond energy increases, and vibrational frequency increases. *
1 point
Strong field ligands are more likely to produce low spin coordination complexes. *
1 point
Fe2(SO4)3 dissociates in aqueous solution into Fe3+(aq) and SO42-(aq) ions. The sulfate ions will be solvated by water and the iron ions will form the hexaaquairon(III) complex, [Fe(H2O)6]3+. The solution will be acidic. *
1 point
Name *
When the volume of the reaction vessel is decreased in which N2O4 (g) (dinitrogen tetroxide) is at equilibrium with NO2 (g) (nitrogen dioxide), this will decrease the value of the equilibrium constant causing the reaction shifts to the left to find the new equilibrium. *
1 point
When lithium iodide is added to water the mixture becomes warm, signifying that the solution process in this case is endothermic. *
1 point
When the solvent is water the concentration of a 1 molar solution is equal to the concentration of a 1 molal solution. *
1 point
In the case of H2O and NH3, the H-X-H bond angles are equal to the tetrahedral angle of 109° that is observed in the molecule CH4. *
1 point
If the nucleophile in acyl substitution upon a highly activated carboxylic acid derivative is inorganic phosphate, the product is a phosphate ester. *
1 point
Schiff base formation involves the reaction of a secondary amine with an aldehyde or ketone. *
1 point
Within an HNMR sample in an applied spectrometer magnetic field, the protons of the reference standard trimethylsilane (TMS) precess at a higher frequency than the protons of almost any organic molecule. *
1 point
A β-keto acid is a substance possessing a carbonyl group on the carbon adjacent to the carboxyl group. *
1 point
A Brønsted-Lowry base must have at least one nonbonding electron pair. *
1 point
Atoms on the far left side of the periodic table are generally less electronegative than atoms on the right side of the periodic table. *
1 point
Submit
Clear form
Never submit passwords through Google Forms.
This content is neither created nor endorsed by Google. - Terms of Service - Privacy Policy

Does this form look suspicious? Report