🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION β†’
Log in
Chemistry
1
answer
0
watching
297
views

3-123 Sodium borohydride, NaBH4, has found wide use as a reducing agent in organic chemistry. It is an ionic compound composed of one sodium ion, Na, and one borohydride ion, BH4.

A. How many valence electrons are present in the borohydride ion?

B. Draw a Lewis structure for the borohydride ion.

C. Predict the H-B-H bond angles in the borohydride ion.

Watch
1
answer
0
watching
297
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Christian Garcia
Christian GarciaLv10
30 Dec 2020

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
discord banner image
Join us on Discord
Chemistry Study Group
Join now

Related textbook solutions

Basic Chemistry
5 Edition,
Timberlake
ISBN: 9780134138046
Principles of Chemistry Molecular Approach
4th Edition,
Tro
ISBN: 9780134112831
Chemistry: Structure and Properties
2nd Edition,
Tro
ISBN: 9780134293936
Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944
Chemistry: A Molecular Approach
3rd Edition,
Tro
ISBN: 9780321809247
Chemistry: A Molecular Approach
5th Edition,
Tro
ISBN: 9780134874371
Principles of Chemistry: A Molecular Approach
4th Edition,
Tro
ISBN: 9780134895741
Chemistry: The Central Science
14th Edition, 2017
Brown
ISBN: 9780134414232

Related questions

1. We decided to use 5.2 molar equivalents based on our past experience performing this type of reduction. What is the theoretical absolute minimum number of molar equivalents one could use in a sodium borohydride reduction of a ketone like camphor? (Think about the structure of sodium borohydride).
2. Consider the reducing agent LiAlH4 as an alternative reagent, which is typically used in THF, followed by careful aqueous workup. If LiAlH4 would be used, what would the consequence be of using an alcoholic solvent (like in this weeks experiment) instead of an inert solvent like THF? Draw a mechanism describing what might happen. You might want to review the LiAlH4 reagent in your organic book / Chem233 notes.
3. When menthone is reduced by NaBH4, two products are formed (a major one and a minor one). Predict the structure of the two molecules. What is the stereochemical relationship between the two molecules? (enantiomers, diastereomers, etc.)
  1. Draw the Lewis structure for silicon disulfide, . How many bonding electron pairs are in a silicon disulfide molecule?
  2. Draw the Lewis structure for chloroform, . How many nonbonding electron pairs are in a chloroform molecule? What is the molecular shape of chloroform?
  3. What is the ionic charge for the chromium ion in ?
  4. Write the chemical formula for stannic chlorite.
  5. Give two particles (atom or ion) that are isoelectronic with a bromide ion.
  6. Write the chemical formula for chlorous acid, what is the ionic charge on ?
  7. Write the chemical formula for hydroselenic acid. What is the charge on ?
  8. Write the chemical formula for tetraphosphorus trisulfide (the flammable compound on match tips that causes ignition).
  9. ​What is the systematic name for ? What is the ionic charge on ?
  10. Write the chemical formula for stannic chlorite.
  11. Write the chemical formula for aluminum sulfide
  12. Write the chemical formula for mercury (I) nitride.
  13. The compound Β is classified as what type of compound?
  14. Which electron sublevel follows the 3d sublevel according to increasing energy?
  15. Write the electron configuration for , How many valence electrons are there in ?
  16. Name all the energy sublevels that exist within the 2nd principal energy level, What are the total numbers of atomic orbitals on the 2nd principal energy level?
  17. What is the isoelectronic series? Give two particles (atom or ions) that are isoelectronic with Ar.
  18. What is the orbital diagram? Write the orbital diagram for a ground-state carbon atom. How many unpaired electrons are there in atom?
  19. What is the formula of iodous acid? What is the ionic charge on ?
  20. Write the Lewis structure, use the VSEPR (balloon) model, predict the molecular geometry around the central atom in .
  21. Write the Lewis structure for . What is the total number of available valence electrons in ?
  22. Write the Lewis structure, use the VSEPR(balloon) model, predict the molecular geometry around the central atom in ClF2+
  23. Write the chemical formula for copper (II) phosphate. What is the charge on ?
  24. Write the Lewis structure, use the VSEPR (balloon) model, predict the electronic geometry around the central atom in (hint: is the central atom)
  25. What is the energy for a red light with a wavelength of 620nm?
  26. Write the Lewis structures for , What is the total number of available valence electrons for this ion?
  27. Write the Lewis structure and determine the total number of lone pairs of electrons in (hint: is the central atom)
  28. Determine the total number of electrons the 3rd principal energy level can accommodate at its maximum capacity.
  29. Write the chemical formula for chromium (VI) selenite. What is the ionic charge on ?
  30. What is the chemical formula for nitrogen gas molecule? Why?

Weekly leaderboard

Home
Homework Help 3,900,000
Chemistry 830,000
Start filling in the gaps now
Log in