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A 0.3200 g sample of a carboxylic acid is burned in oxygen, producing 0.5706 g of CO2 and 0.2349 g of H2O. How would you determine the empirical formula of carboxylic acid?
The idea here is that you need to figure out how much carbon and hydrogen were present in the initial sample, then use the sample's mass to figure out how...
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It is desired to prepare 4.0 M nitric acid from the available acid solution of strength 1.4 M & 6.8 M respectively. If the total volume of the 4.0 M nitric acid required to be prepared is 4 $dm^3$, calculate the volume of the 2 acid solutions to be mixed?
First we find the total moles of $HNO_3$ required: $c=n/v$ So $n=cxxv=4xx4=16mol$ Let volume of the 1.4M solution = $X$ Let volume of the 6.8M solution =$Y$ So we can...
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Which of the following salts (ionic compounds) will be substantially more soluble in an acidic solution than in pure water:
Ag2CO3,
AgClO4,
PbI2, or
Cd(OH)2?
Silver carbonate will be more soluble in nitric acid: $Ag_2CO_3(s) + 2HNO_3(aq) rarr 2AgNO_3(aq) + H_2O + CO_2uarr$ Silver perchlorate is certainly soluble (and had hydrochloric been added, $AgCl$ would...
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Will magnesium fluoride be more soluble in acidic solution?
This gives a $K_"sp"=5.16xx10^-11$. However, in acidic solution, we substantially reduce the concentration of one of the reagents that participates in the solubility expression, i.e. we modify $[F^-]$. $F^-$ is...
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Lactic acid has one acidic hydrogen. A 0.1 M solution of lactic acid has a pH of 2.44. Calculate Ka for lactic acid?
You don't actually need to know the molecular formula for lactic acid in order to solve this problem. You are told that lactic acid has one acidic proton, which...
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Hydrochloric acid is not soluble in toluene, a nonpolar solvent but quite soluble in water. What can be inferred about the nature of the acid?
Likes dissolve in likes. Hydrochloric acid not only dissolves in water, but it dissociates: $HCl->H^+ +Cl^-$ The $H^+$ attaches to a water molecule to form hydronium: $HCl+H_2O->H_3O^+ +Cl^-$ Where the...
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Why do aqueous solutions of phenol give acidic solutions?
Because the $"phenoxide anion"$ is stabilized somewhat by , and delocalization of charge , $"phenol"$, and its derivatives are mildly acidic...... $C_6H_5OH(aq) + H_2O(l)rarrC_6H_5O^(-) +H_3O^+$ or since you specified an...
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Calculate [OH-] ions in a 0.125 M solution of nitrous acid. Is this solution acidic or basic; how do you know? Make sure you include the ionization equation.
$"Nitrous acid"$, $HNO_2$, is a weak Bronsted acid, and ionizes in solution according to: $HNO_2(aq) +H_2O(l) rightleftharpoons H_3O^+ + NO_2^-$ It will give a weakly acidic solution. We could calculate...
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Identify the following compounds as strongly acidic, weakly acidic, weakly basic, strongly basic, or pH-neutral in water at $25^@ "C"$? $"Al"("NO"_3)_3$, $"C"_2"H"_5"NH"_3"NO"_3$, $"NaClO"$, $"KCl"$, $"C"_2"H"_5"NH"_3"CN"$
These are mostly straightforward, except for one. $"Al"("NO"_3)_3$ is strongly acidic because $"Al"^(3+)$ is a Lewis acid. It has an empty $3p_z$ orbital that accepts electron , making it...
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Are all hydroxides basic? What makes a base basic, and an acid acidic?
Both $H_2SO_4$ and $HNO_3$ contain hydroxides....and yet these are STRONG acids.... And an acid is typically the hydroxide of a non-metal, whereas a base is typically the hydroxide of a...
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