3.65 g of HCL is present in 1 L of solution at 25 degrees celsius. If x L of water is added such that pH change by 1 unit at 25 degrees celsius, the value if x is (Assume no change in volume due to addition of acid in water

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500 m L

0.2 M

aqueous solution of acetic acid is mixed with

500 m L

0.2 M

H C l

25^{o} C

(a) Calculate the degree of dissociation of acetic acid in the resulting solution and pH of the solution.
(b) If

6 g

N a O H

is added to the above solution, determine final pH. Assume there is no change in volume on mixing.

K_{a}

for acetic acid is

1.75 \times 10^{- 5} M L^{- 1}

Q. Calculate the Standard Free Energy Change at 25 degrees celsius given the Equilibrium constant of 1.3 x 10^4.

Dear sir /ma'am,

The solubility of sodium fluoride, NaF, in water at 25 degree Celsius is 4.100g per 100.0g of water. Assume 100.0g of water occupies a volume of 100.0ml.A saturated solution is prepared by adding 6.000gof NaF to 100.0ml of water at 25 degree Celsius in a beaker and steering thoroughly.

The following sequence of steps is carried out :

Step 1:50.0ml of solution is removed from the beaker and discarded.

Step 2:50.0ml of water is added to the beaker and steered.

Step 3:50.0ml of solution is Removed from the beaker and discarded.

The maximum mass of NaF now remaining and recoverable from the beaker is?

Options:

A) 1.025g

B) 1.900g

C) 1.975g

D) 4.100g

Please help me to solve it.

Q. Depression of freezing point of 0.01 molal aqueous Acetic Acid solution is 0.0204 degree Celsius. 1 molal urea solution freezes at -1.86 degree Celsius. Assuming molality equal to molarity, pH of Acetic Acid solution.

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