CHEM 212 Study Guide - Final Guide: Sodium Sulfate, Sodium Bicarbonate, Electromagnetic Spectrum

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greenelephant904

21 Nov 2012

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Choose the one best answer. (2 points each) Which ion is the strongest nucleophile in aqueous solution? (a) f- (c) br- (b) cl- (d) i- (e) all of these are equally strong. Which of the electromagnetic spectrum is used in nuclear magnetic resonance spectroscopy? (b) infrared (c) visible (d) radio (a) x-ray (e) ultraviolet. Which of the following is not true about grignard reagents? (a) they are sensitive to water and oxygen. (b) they are strong bases. (c) they must be prepared in ether solutions. (d) they are made with cui. d. ) with a: in organic lab, helen wheels combined 2-methyl-2-propanol (1. 75 ml, catalytic amount of sulfuric and phosphoric acids. Her 1h nmr spectrum showed a singlet at 5. 0 ppm (1h), a singlet at 2. 5 ppm (3h), and a broad peak at 1. 5 ppm (0. 1 h). What do these spectra indicate about how well.

Related Questions

Which statement is NOT true about ionic bonds?

A. one atom acts as an electron donor and another acts as an electron acceptor

B. electrons are completely lost or gained in ion formation

C. an ion has the same number of electrons as a nonionic atom of the same element

D. a salt such as NaCl is formed by an ionic reaction

E. all of the above are true

blushlion324

(a) Sketch the molecular orbitals of the H₂^– ion and draw its energy-level diagram. (b) Write the electron configuration of the ion in terms of its MOs. (c) Calculate the bond order in H₂^-. (d) Suppose that the ion is excited by light, so that an electron moves from a lower-energy to a higher-energy molecular orbital. Would you expect the excited-state H₂^- ion to be stable? (e) Which of the following statements about part (d) is correct: (i) The light excites an electron from a bonding orbital to an antibonding orbital, (ii) The light excites an electron from an antibonding orbital to a bonding orbital, or (iii) In the excited state there are more bonding electrons than antibonding electrons?

orchidporcupine225

CHEM 212 Study Guide - Final Guide: Sodium Sulfate, Sodium Bicarbonate, Electromagnetic Spectrum

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