Chemistry

Hi I have two questions and I was hoping someone could help me with them.

1. Classify the following compounds as ionic or covalent
a. MgCl2
b. Na2S
c. H2O
d. H2S

2. Which compound in each pair exhibits the stronger intermolecular hydrogen bonding?
a. H2S vs. H2O
b. HCl vs. HF
c. HBr vs. HCl
d. NH3 vs. H20

Thanks for your help.

The secret to #1 is to look up the elecrronegativities of each element and subtract them. For example, H is about 2.1 and O is about 3.5. The difference is 1.4 We usually call compounds with a difference of 1.8 or so ionic. Less than that will be covalent. Technically, few molecules are all one or the other. On this scale MgCl2 will be ionic and H2O will be covalent. Now you do the other two.
The secret to #2 is to look at electronegativities, also. S is about 2.5 and O is about 3.5 so H2O is more likely to form H bonding. For NH3 and H2O, N is about 3.0 and O is 3.5 so H2O is more likely to form H bonding than NH3. The compound in which the non-hydrogen element has the higher EN have a tendency to more likely form H bonding. I will leave the others for you.

  1. 👍 0
  2. 👎 0
  3. 👁 87
asked by Alekya

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra

    Questions on piecewise function graphing Obviously I can't get help with the actual graphing here but I am hoping someone can push me in the right direction Problem: f(x) {4, if 0

    asked by Linda on September 6, 2011
  2. English

    1. What are people in the Netherlands hoping for? 2. What are people of the Netherlands hoping for? -They are hoping for another cold weather. -------------------- Which is right, 'in' or 'of' before the Netherlands? 3. How long

    asked by rfvv on October 19, 2014
  3. History: Research

    I am doing a project in my class over life after the civil war and I need to answer some questions. Some of the questions are like: •what was life like for white families in the south, freed slaves, and families in the north.

    asked by Katt on October 11, 2017
  4. Multiplying and Dividing Rational Expressions

    I will be forever thankfulif someone can solve these for me.Hopefully I typed them correctly. For instance,the first one,what I'm looking at is m-2over m-5 and that's multiplied times m+5 over m-2 1.m-2/m-5*m+5/m-2

    asked by mike on May 16, 2007
  5. health

    It's my first time writing a research paper, I'm not sure what it should look like and was hoping someone would have an example of one on line. I have four questions I need to answer and if I could see an example of a paper

    asked by Teresa on August 2, 2010
  6. AP Calculus BC Resources

    Hi there, I was hoping if any one was familiar with any sites that have printable integration/differentiation packets? I'm hoping to use them for everyday practice. I skipped Calculus AB and need a little help. I love packets so

    asked by Ted on October 26, 2006
  7. english

    The snake's skin feels rather smooth. Is feels a linking verb? The goats in the children's zoo are hoping for treats. Is are hoping a linking verb?

    asked by kelley on November 11, 2014
  8. Crimal Justice

    Julia has served one year of her 10-year sentence in prison. She has behaved herself, work at the library, and has not acted out in any way. She is hoping that at her next hearing judge will reduce her sentence. What type of

    asked by steve on March 13, 2017
  9. History

    I go to the Middletown High School and I lost the combination to my locker which has my Global Histoory textbook in it. I was hoping somebody would be kind enough to tell me what the questions are on page 26 numbers 3-7 and page

    asked by Diana on September 28, 2007
  10. Biology

    Im doing an experiment in Biology on a drug, but im not sure where I can find information on the drug Chantix. i also have a few general questions I was hoping you could help me with... 1. Why is it improtant to have as many

    asked by rainy on January 14, 2011
  11. Calculus

    Haha you got me oobleck, it was technically just for studying tho v.v Well, I was hoping you could check the answers and explain to me which ones are wrong (I got a c on it and want to be ready for the next one TT) (I know it

    asked by Kat on February 24, 2019

More Similar Questions