Which one is an acidic anhydrates?
a. Na2O
b. MgO
c. CO2
No ideas. What does acidic anhydrates mean?
Also, from my previous post, is iron the transition element with the inner third orbital partially filled?
Thank you.
ok on Fe.
You mean an anhydride. An anhydride is the anhydrous form (without water) of an acid. So add water to each of the compounds and see which produces an acid. Example,
Na2O + H2O ==> NaOH (not balanced). So it can't be choice a.
MgO + H2O ==> Mg(OH)2 (balanced, but it's strong base, so it would not be choice b?)
CO2 + H2O ==> I don't know what's the product
Please help!
Thank you.
CO2 + H2O ==> H2CO3 (carbonic acid). Know what CO2 dissolved in water (to make carbonated drinks) contains? H2CO3. So CO2 is the anhydride of H2CO3.
SO2 is the anhydride of H2SO3.
SO3 is the anhydride of H2SO4.
N2O5 is the anhydride of HNO3. (The anhydride of HNO3 is NOT NO2 as many people think.) This web site has it correct.
http://www.c-f-c.com/supportdocs/nitrogen_oxi.htm
N2O3 is the anhydride of HNO2.
I know you didn't as for all this stuff but it's all free anyway. Remember this. It may come in handy someday.
Thank you!
An acidic anhydride, also known as an acidic oxide or acid anhydride, is a type of oxide that reacts with water to form an acid. It is called an "anhydride" because it is derived from an acid by the removal of water. Acids are generally substances that increase the concentration of hydrogen ions (H+) when dissolved in water.
Now, let's determine which of the given options is an acidic anhydride.
a. Na2O: Sodium oxide is a basic oxide. It reacts with water to form a strong base (sodium hydroxide).
b. MgO: Magnesium oxide is also a basic oxide. It reacts with water to form a slightly basic solution.
c. CO2: Carbon dioxide is a non-metallic oxide. It reacts with water to form a weak acid called carbonic acid (H2CO3), making it an acidic anhydride.
Therefore, the acidic anhydride in the given options is CO2 (carbon dioxide).
Regarding your second question, iron (Fe) is not considered a transition element with the inner third orbital partially filled. Transition elements are those that have partially filled d orbitals. The electron configuration of iron (Fe) is [Ar] 3d6 4s2. So, it is considered a transition element with partially filled outer 3d orbitals.
I hope this clarifies your doubts! Let me know if you have any more questions.