PLEASE HELP! STAT! When aqueous solutions of cadmium chloride and sodium sulfide are mixed, a precipitate of cadmium sulfide for
ms, leaving soluble sodium chloride in
the solution. Include states in your answer.
Write the molecular equation for the reaction.
Write the ionic equation for the reaction.
write the net ionic equation for the reaction. 
the solution. Include states in your answer.
Write the molecular equation for the reaction.
Write the ionic equation for the reaction.
write the net ionic equation for the reaction.
2 answers:
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Answer:
A mixture of 100. mL of 0.1 M HC3H5O3 and 50. mL of NaOH
Explanation:
The pH of a buffer solution is calculated using following relation
Thus the pH of buffer solution will be near to the pKa of the acid used in making the buffer solution.
The pKa value of HC₃H₅O₃ acid is more closer to required pH = 4 than CH₃NH₃⁺ acid.
pKa = -log [Ka]
For HC₃H₅O₃
pKa = 3.1
For CH₃NH₃⁺
pKa = 10.64
pKb = 14-10.64 = 3.36 [Thus the pKb of this acid is also near to required pH value)
A mixture of 100. mL of 0.1 M HC3H5O3 and 50. mL of NaOH
Half of the acid will get neutralized by the given base and thus will result in equal concentration of both the weak acid and the salt making the pH just equal to the pKa value.
The new volume of the bottle is 5.07 L.
<h3>What is Boyle's Law?</h3>It is a gas law that states the pressure decrease with the increase in the pressure.
By the formula
Given that, volume1 is 2.3l
Pressure1 is 4 atm.
Pressure2 to 0.65 atm.
V2 is to find?
Putting the values in the equation
Thus, the new volume of the bottle is 5.07 L.
Learn more about Boyle's Law
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