Which of the following compounds are soluble?
Choose at least one answer.
a. BaSO4
b. K2SO4
c. KBr
d. NaOH
e. Al(OH)3
I originally thought it was the last four, but it isn't, or it isn't only/all of them. Aren't all sulfates and potassium soluble?
What are the reactant ions in the net ionic equation? AgNO3(aq) + NaCl(aq)--> NaNO3(?) + AgCl(?)
Choose at least one answer.
a. Ag+
b. AgCl
c. NO3-
d. Cl-
e. Na+
f. NaNO3
I put a, c, d, and e.
In the reaction of hydrochloric acid and lithium hydroxide what is the negative spectator ion?
I put H-.
Thank you!
1. Insolubles are a and e. b,c,d are soluble.
You must learn the solbility rules. Here is a simplified set of rules.
http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
2. The net ionic equation is
Ag^ + Cl^- ==> AgCl
a and d
b is the product
c and e are spectator ions.
f is a product written as a molecule.
For the first question, the solubility of compounds can vary. The correct choices for soluble compounds are:
b. K2SO4 (Potassium sulfate)
c. KBr (Potassium bromide)
d. NaOH (Sodium hydroxide)
a. BaSO4 (Barium sulfate) and e. Al(OH)3 (Aluminum hydroxide) are not soluble.
Regarding your question about sulfates and potassium, while many sulfates and potassium compounds are soluble, it does not apply to all compounds containing sulfates or potassium.
For the second question, the net ionic equation for the reaction AgNO3(aq) + NaCl(aq) → NaNO3(?) + AgCl(?) would include the following reactant ions:
a. Ag+ (Silver cation)
d. Cl- (Chloride anion)
The final products in the given equation are NaNO3 and AgCl.
For the third question, in the reaction between hydrochloric acid (HCl) and lithium hydroxide (LiOH), the negative spectator ion is OH- (Hydroxide anion).
To determine solubility of compounds, we need to consider the solubility rules. Here are the solubility rules for common salts:
1. All nitrates (NO3-) are soluble.
2. All alkali metals (Group 1A) and ammonium (NH4+) salts are soluble.
3. Most chlorides (Cl-) are soluble, except those of silver (Ag+), lead (Pb2+), and mercury (Hg2+).
4. Most sulfates (SO42-) are soluble, except those of calcium (Ca2+), strontium (Sr2+), barium (Ba2+), lead (Pb2+), and silver (Ag+).
5. Most hydroxides (OH-) are insoluble, except those of alkali metals (Na+, K+, etc.) and barium (Ba2+).
Using these rules, let's determine which compounds are soluble from the given options:
a. BaSO4 - Insoluble (rule #4)
b. K2SO4 - Soluble (rule #2)
c. KBr - Soluble (rule #2)
d. NaOH - Soluble (rule #5)
e. Al(OH)3 - Insoluble (rule #5)
Therefore, the soluble compounds are K2SO4, KBr, and NaOH. The correct answer is b, c, and d.
For the net ionic equation of AgNO3(aq) + NaCl(aq) --> NaNO3(?) + AgCl(?), we need to identify the reactant ions. The reactant ions are Ag+ (from AgNO3) and Cl- (from NaCl).
The product ions are Na+ (from NaNO3) and AgCl (from AgNO3 reacting with NaCl).
So the correct answer choices are a, b, and d.
In the reaction of hydrochloric acid (HCl) and lithium hydroxide (LiOH), the negative spectator ion is OH-. It does not participate in the reaction and remains unchanged. The negative ion H- does not exist in this compound, so the correct answer is OH-.
I hope this helps! Let me know if you have any further questions.