All Questions
10 questions
3
votes
2
answers
340
views
Reaction between sodium hydroxide and phosphorus trioxide
My chemistry textbook [1], chapter Periodic Properties of Elements, section p-Block elements — formation of oxides suggests that the reaction is
$$\ce{P2O3 + 2 NaOH -> 2 NaHPO3},\tag{R1}$$
but ...
2
votes
2
answers
438
views
Why is degree of dissociation used to estimate strength of an acid?
Problem
Which of the following will give strength of acid?
A) pH
B) Normality
C) Degree of dissociation
D) Dissociation constant
Answer
Question
If pH is not considered as a metric to assess the ...
- 1,419
10
votes
1
answer
21k
views
Are all ionic compounds salts?
According to Wikipedia:
A salt is an ionic compound that can be formed by the neutralization
reaction of an acid and a base.
Are all ionic compounds salts? Are all salts ionic compounds?
- 111
3
votes
1
answer
3k
views
Does the addition of water to N2H4 produce N2H4
I am currently calculating the $\ce{pH}$ of a species.
The reaction is as follows,
$$\ce{N2H4 + H2O <=> N2H_{$A$}+ + OH-}$$
However, I'm not sure what the value of $A$ will be. In my ...
- 31
6
votes
1
answer
48k
views
How to identify a redox reaction?
Which balanced equation represents a redox reaction?
\begin{align}
&\mathrm{A.} &\ce{AgNO3 + NaCl &-> AgCl + NaNO3} \\
&\mathrm{B.} &\ce{BaCl2 + K2CO3 &-> BaCO3 + 2KCl} ...
- 79
6
votes
2
answers
2k
views
Factors affecting mass of a gas-evolving reaction mixture over time
Excess magnesium was added to a beaker of aqueous hydrochloric acid on a balance. A graph of the mass of the beaker and contents was plotted against time (line 1).
What change in the experiment could ...
5
votes
0
answers
905
views
Is phosphorus trichloride really a stronger Lewis acid than antimony pentafluoride?
The following was a question from the ETS Chem GRE guide and apparently this was an actual question on an exam a few decades ago. Unfortunately, no explanation for the answer was given, and I couldn't ...
- 1,143
0
votes
1
answer
8k
views
Why is Sulfur trioxide a neutral electrophile?
My chemistry book says, an electrophile is a reagent which is atrracted to electrons, therefore positive ions and reagents with incomplete octets act as electrophiles, Sulfur trioxide belongs to ...
- 121
7
votes
2
answers
6k
views
Why is glycine hydrochloride more acidic than chloroacetic acid?
I cannot figure out why glycine hydrochloride is more acidic than chloroacetic acid. Could I have figured this out from a $\mathrm pK_\mathrm a$ table and maybe am just not seeing it? On the table I ...
- 149
11
votes
1
answer
29k
views
Is an ester or a ketone more acidic?
Two organic chemistry textbooks I've read (by Bruice and by Tandon) say:
Esters are more acidic than ketones, because the resonance between the two oxygen atoms gives less opportunity for the ...
- 155