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-.
Thanks in advance!
I gave you the solubility rules and the answers to the first two questions yesterday.
For the third question,
HCl + LiOH ==> H2O + LiCl
The negative spectator ion doesn't appear to be H^-. In fact, there is no H^- anywhere in the equation.
To determine the solubility of compounds, you can refer to solubility rules or tables. In this case, we can use the general solubility rules to determine the solubility of the compounds given:
a. BaSO4: According to the solubility rules, sulfates (SO4^2-) are generally insoluble except for those of Group 1 metals (such as K+) and ammonium ion (NH4+). Therefore, BaSO4 is not soluble.
b. K2SO4: As stated in the rule above, sulfates are soluble for Group 1 metals like potassium (K+). Therefore, K2SO4 is soluble.
c. KBr: Bromides (Br-) are generally soluble, so KBr is soluble.
d. NaOH: Hydroxides (OH-) of Group 1 metals (such as Na+) are soluble. Therefore, NaOH is soluble.
e. Al(OH)3: The solubility of aluminum hydroxide (Al(OH)3) is generally very low, making it practically insoluble.
So, the compounds that are soluble in this case are: K2SO4, KBr, and NaOH.
Moving on to the second question, the net ionic equation for the reaction AgNO3(aq) + NaCl(aq) --> NaNO3(aq) + AgCl(s) can be determined by identifying the spectator ions.
In this reaction, NaNO3 is a soluble ionic compound, so it dissociates fully into Na+ and NO3-. However, AgCl is insoluble, which means it remains in its solid state without completely dissociating. Ultimately, the net ionic equation only includes the participating ions that undergo actual chemical changes. The correct answer would be a, b, and d: Ag+, AgCl, and Cl-.
For the last question regarding the reaction between hydrochloric acid (HCl) and lithium hydroxide (LiOH), the negative spectator ion is not H-. In this case, LiOH is a strong base and completely dissociates into Li+ and OH-. When HCl is added, it reacts with OH- to form water, leaving Li+ and Cl- as the only ions involved in the chemical change. Therefore, the negative spectator ion is Cl-.
I hope this explanation clarifies the correct answers to your questions! Let me know if you have any further inquiries.
For the first question, the soluble compounds can be determined by referring to solubility rules in chemistry. According to the solubility rules, the compounds soluble in water are:
b. K2SO4 - Potassium sulfate
c. KBr - Potassium bromide (all bromides are soluble, including KBr)
d. NaOH - Sodium hydroxide (all hydroxides are soluble, including NaOH)
The compounds that are insoluble or only partially soluble are:
a. BaSO4 - Barium sulfate (all sulfates are soluble except barium sulfate)
e. Al(OH)3 - Aluminum hydroxide (most hydroxides are insoluble except those of Group 1 metals and ammonium)
So, the soluble compounds are b, c, and d.
For the second question, the reactant ions in the net ionic equation can be determined by separating each compound into their respective ions:
AgNO3(aq) + NaCl(aq) → NaNO3(aq) + AgCl(s)
The reactant ions in the net ionic equation are:
a. Ag+ - Silver ion
d. Cl- - Chloride ion
The product ions in the net ionic equation are:
b. AgCl - Silver chloride
e. Na+ - Sodium ion
So, the correct answers are a, d, b, and e.
In the reaction of hydrochloric acid and lithium hydroxide (HCl + LiOH), there are no negative spectator ions. The spectator ion is the one that does not participate in the chemical reaction and remains unchanged.
In this case, the products of the reaction are lithium chloride (LiCl) and water (H2O). The negative ion in lithium chloride is Cl-, but it is not a spectator ion since it is involved in the chemical reaction.
Therefore, there is no negative spectator ion in the reaction of hydrochloric acid and lithium hydroxide.