Answer:
Explanation:
Given the details, we can say that
Pure methanol is a volatile solvent as the vapour pressure has a high value. This means that methanol - methanol intermolecular forces are weak in comparisson to water - water forces. When having about 30% of water in a methanol mixture, the mixture Pv decreased, showing that it is not a volatile mixture, so then there are strong intermolecular interactions between methanol - water, part of it due to the hydrogen bonds.
the Percentage yield for the reaction = 48.8%
What is Percentage yield ?
The % ratio of the theoretical yield to the actual yield is known as the percent yield. It is calculated as the theoretical yield multiplied by 100% divided by the experimental yield. The percent yield is 100% if the theoretical and actual yields are equal. Because the real yield is frequently lower than the theoretical value, percent yield is typically lower than 100%. This may be due to incomplete or conflicting reactions or sample loss during recovery. If the percent yield is more than 100%, more sample than expected was retrieved from the reaction.
4 P + 3 O2 = P4O6
moles P = 75.3 g / 30.9738 g/mol= 2.43
moles O2 required = 2.43 x 3 / 4=1.82
actual moles O2 = 38.7 g /32 g/mol=1.21 so O2 is the limiting reactant
theoretical moles P4O6 = 1.21 / 3=0.403
theoretical mass P4O6 = 0.403 mol x 219.895 g/mol=88.6 g
% yield = 43.3 x 100/ 88.6 = 48.8 %
the Percentage yield for the reaction = 48.8%
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Hi there!
The 6 branches of chemistry are Organic Chemistry, Inorganic Chemistry, Analytical Chemistry, Physical Chemistry, Biochemistry, and <span>Nuclear Chemistry.
</span>Organic Chemistry: The branch of chemistry dedicated to carbon compounds and substances.
Inorganic Chemistry: <span> The branch of chemistry dedicated to non-carbon compounds and substances.
</span>
Analytical Chemistry: The branch of chemistry dedicated to identifying and quantifying matter through a variety of different instruments, tools, and practices.
Physical Chemistry: The branch of chemistry dedicated to analysis of chemical phenomena as well as their different behavior and phenomena.
Biochemistry: <span> The branch of chemistry dedicated to the chemical processes such as cellular respiration that occur within living organisms.</span>
Nuclear chemistry: <span> The branch of chemistry dedicated to nuclear processes and properties as well radioactivity.</span>
The temperature at which a liquid turns into a solid when cooled
Answer:
The Ksp for this compound is 3.24 * 10^-8
Explanation:
Step 1: Data given:
Molar solubility of MgCO3 = 1.8 * 10^-4 mol /L
Step 2: Calculate molarity
For an insoluble compound, its molar solubility tells you how many moles of the compound can be dissolved per liter of aqueous solution before reaching saturation.
In this case, it means that we can only dissolve 1.8 * 10^-4 moles in a liter of water at that temperature.
Moles Mg^2+ = 1.8 * 10^-4 moles
Moles CO3^2- = 1.8 * 10^-4 moles
Since we're working with one liter of solution, we can say the molarity:
[Mg^2+] = 1.8 * 10^-4 M
[CO3^2-] = 1.8 * 10^-4 M
Step 3: Calculate Ksp
Ksp = [Mg^2+]*[CO3^2-]
Ksp = 1.8 * 10^-4 * 1.8 * 10^-4
Ksp = 3.24 * 10^-8
The Ksp for this compound is 3.24 * 10^-8
