Initial moles of CH₃COOH = 1.00 x 0.0100 = 0.0100 mol
Initial moles of CH₃COONa = 1.00 x 0.100 = 0.100 mol
Let a be the volume of HNO₃ that must be added
Moles of HNO₃ added = a/1000 x 10.0 = 0.01a mol
CH₃COONa + HNO₃ => CH₃COOH + NaNO₃
Moles of CH₃COOH = 0.0100 + 0.01a
Moles of CH₃COONa = 0.100 - 0.01a
pH = pKa + log([CH₃COONa]/[CH₃COOH])
= pKa + log(moles of CH₃COONa/moles of CH₃COOH)
5.05 = 4.75 + log((0.100 - 0.01a)/(0.0100 + 0.01a))
log((0.100 - 0.01a)/(0.0100 + 0.01a)) = 0.3
(0.100 - 0.01a)/(0.0100 + 0.01a) = 10^0.3 = 2.0
0.03 a = 0.08
a = 2.67
<span>Volume of HNO3 = a = </span>2.13 mL
Answer:
2.16 moles of Au₂S₃ are decomposed.
Explanation:
Given data:
Number of moles of gold (III) sulfide decomposed = ?
Number of moles of gold metal formed = 4.32 mol
Solution:
Chemical equation:
Au₂S₃ → 2Au + 3S
Now we will compare the moles of Au₂S₃ with gold metal.
Au : Au₂S₃
2 : 1
4.32 : 1/2×4.32 = 2.16
2.16 moles of Au₂S₃ are decomposed.
When we combine the provided amounts of 0.549 M calcium nitrate Ca(NO3)2 solution and 1.321 M Ca(NO3)2 solution, the ultimate concentration of Ca(NO3)2 is 8.76 M.
<h3>What is molar concentration?</h3>
The amount of a solute present in one unit of a solution is known as its molar concentration. Mol/L, mol/dm3, or mol/m3 are its units. Molar concentration, also referred to as molarity, can be expressed with the letter M, or molar.
The amount of a substance in a specific volume of solution is known as its molarity (M). The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.
The ratio of the solute to solution amounts is known as concentration. A solute's molarity per liter of solution is measured using the unit of concentration.
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Answer:
Can you please provide a graph or picture?
Explanation:
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Answer:
A hypothesis is either a suggested explanation for an observable phenomenon, or a reasoned prediction of a possible causal correlation among multiple phenomena. In science, a theory is a tested, well-substantiated, unifying explanation for a set of verified, proven factors.
Explanation:
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