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ASHA 777 [7]
3 years ago
5

"You measure 48.9 mL of a solution of sulfuric acid with an unknown concentration, and carefully titrate this solution using a 1

.500 M solution of KOH. You find that 34.7 mL of the KOH solution is required to fully neutralize the acid. What is the concentration of the original sulfuric acid solution
Chemistry
1 answer:
Blizzard [7]3 years ago
6 0

Answer:

C= 0.532M

Explanation:

The equation of reaction is

H2SO4 + 2KOH = K2SO4+ H2O

nA= 1, nB= 2, CA= ?, VA= 48.9ml, CB= 1.5M, VB= 34.7ml

Applying

CAVA/CBVB = nA/nB

(CA× 48.9)/(1.5×34.7)= 1/2

Simplify

CA= 0.532M

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Use the table to compare the solubility of substances. Check all of the boxes that apply.
vladimir2022 [97]
<h2>Answers to the rest of the assignment:</h2>

**Check for proof photos at the bottom.**

<h2>_____________________________________</h2>

Use the table to compare the solubilities of substances. Check all of the boxes that apply.

A. Aspirin is less soluble than table salt, but more soluble than carbon dioxide.

C. A saturated solution of table sugar is more concentrated than a saturated solution of table salt.

<h2>_____________________________________</h2>

The solubility of glucose at 30°C is  125 g/100 g water. Classify a solution made by adding 550 g of glucose to 400 mL of water at 30°C. Explain your classification, and describe how you could increase the amount of glucose in the solution without adding more glucose.

Answer: The solution is saturated. At 30°C, 500 g of glucose will dissolve in 400 mL of solution. Of the 550 g glucose added, only 500 g will dissolve and 50 g will precipitate out. The amount of glucose in the solution can be increased by heating the solution because the solubility of solids tends to increase with temperature.

<h2>_____________________________________</h2>

Use the graph to identify the number, letter, or word that completes each statement.  

•      The solubility of Solute D  <u>decreases</u>  as temperature increases.

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•      The solubility of Solutes C and D is the same at  <u>20</u>°C.

•      As the temperature increases from 0 to 100, the solubility only changes by about  <u>5</u> grams for Solute B.

<h2>_____________________________________</h2><h2>Explanation:</h2>

In the provided table shows the solubility of 4 different substances. The solubility number for Aspirin is smaller than the number for table salt, but larger than the number for carbon dioxide. Since the solubility if sugar is larger than table salt, its saturated concentration would be higher.

In the given chart, the line representing solubility of solute D decreases as temperature increases. The line for solute E increases the most. At 20°C, the lines of C and D are about the same height.

Here are photos of Edge just incase.

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Answer:

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6 0
3 years ago
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trapecia [35]

Answer:

A: Antibonding molecular orbitals are higher in energy than all of the bonding molecular orbitals.

Explanation:

Molecular  orbital theory describes <u>covalent bonds in terms of molecular orbitals</u>, which  result from interaction of the atomic orbitals of the bonding atoms and are associated  with the entire molecule.

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C.
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Answer:

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5 0
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