Calculate the molarity of 48.0 mL of 6.00 M H2SO4 diluted to 0.250 L

Chemistry

2 answers:

lorasvet [956]14 days ago

4 0

Answer:

The molality is 1.15 m.

Molality is calculated by dividing the number of moles of solute by the kilograms of solvent, which in this case is water.

Calculate moles of H₂SO₄ from molarity:

C = n/V → n = C × V = 6.00 mol/L × 0.048 L = 0.288 moles

Mass of solvent (water) based on density:

m = ρ × V = 1.00 kg/L × 0.250 L = 0.250 kg

Therefore, molality is:

m = moles/solvent mass = 0.288 moles / 0.250 kg = 1.15 m

lions [985]14 days ago

3 0

Answer:

The resulting molarity after diluting 48.0 mL of 6.00 M H₂SO₄ to 0.250 L is 1.152 M.

Explanation:

Dilution decreases concentration by adding more solvent while keeping the amount of solute constant, thereby increasing total volume.

Using the formula:

Initial moles = Final moles → MiVi = MfVf

Where:

Mi = initial molarity = 6 M
Vi = initial volume = 48 mL = 0.048 L
Mf = final molarity (unknown)
Vf = final volume = 0.250 L

Substitute values:

6 M × 0.048 L = Mf × 0.250 L

Solving for Mf:

$Mf=\frac{6M*0.048L}{0.250 L}$

Thus, Mf = 1.152 M

The concentration of the diluted H₂SO₄ solution is 1.152 M.

You might be interested in

So, could you use easily use chromic acid to visualize spots when you are monitoring a reaction to make a ketone out of an alcoh

VMariaS [1037]

While the original inquiry is incomplete, the comprehensive question is:

Many chemicals can illustrate spots on a TLC plate that have been processed and dried. The permanganate used in the video creates yellow spots against a purplish background, taking advantage of the oxidizing capability of basic permanganate (MnO4), which outperforms chromic acid as an oxidizing agent. Chromic acid can also be employed to visualize spots, resulting in a green hue on the yellow background, indicating oxidation. So, can chromic acid be conveniently used to visualize spots when tracking a reaction converting an alcohol into a ketone? What observations are anticipated if one attempts this? Furthermore, if a small amount of alcohol is included in a solvent mixture for eluting your TLC plate, why must the plate be fully dried before visualizing the spots with an oxidizing agent like permanganate or chromic acid?

Answer:

Typically, using chromic acid to visualize spots during the conversion of alcohol to ketone is not feasible. The alcohol (substrate) will convert into its respective ketone due to the presence of chromic acid, causing the spots for the product and the reactant to align horizontally. This alignment complicates differentiation between the spots, making chromic acid unsuitable for this purpose.

It's vital to ensure that the plate is completely dry before observing spots with an oxidizing agent, even if alcohol is present in the solvent mixture. Incomplete drying could lead to oxidation of the alcohol by the oxidizing agent, resulting in transformation to carboxylic acid or ketone, thereby creating a new spot.

6 0

13 days ago

A metallic object holds a charge of −4.8 × 10−6 C. What total number of electrons does this represent? (e = 1.6 × 10−19 C is the

Anarel [852]

Answer:

$n=3.0\times 10^{13}$