Question

1. How many moles of acetic acid should be added to 100 ml of 0.6 M formic acid solution such that the percentage dissociation of formic acid remains unchanged? Ka for acetic acid=1.8x10^-5 and Ka for formic acid = 2.4x10^-4 ​

Answer 1

Answer:

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Explanation:

An aqueous solution of aniline of concentration 0.24M is prepared. What concentration of sodium hydroxide is needed in this solution so that anilinium ion concentration remains 1x10-3M?

(Ka for C6H5NH3+ =2.4x10-5M) (10-2M) 7. An aqueous solution contains 10% ammonia by mass and has a density of 0.99g cm-3. Calculate hydroxyl and hydrogen ion concentration in this solution.(Ka for NH4=5.0x10-10M) (9.28x10-13 mol L-1)

CALCULATION OF pH 8. Calculate pH value of (a) .00001M HCl solution, and (b) 0.04M HNO3 solution assuming complete dissociation in each case. (4)(1.398) 9. Calculate the hydrogen ion concentration in moles/liter of a solution whose pH is 5.4 (3.98x10-6mole/liter) 10. Will the pH of water be same at 4oc and 25oC? Explain?

Answer 2

Answer:

An aqueous solution of aniline of concentration 0.24M is prepared. What concentration of sodium hydroxide is needed in this solution so that anilinium ion concentration remains 1x10-3M?

(Ka for C6H5NH3+ =2.4x10-5M) (10-2M)

7. An aqueous solution contains 10% ammonia by mass and has a density of 0.99g cm-3. Calculate hydroxyl and hydrogen ion concentration in this solution. (Ka for NH4=5.0x10-10M) (9.28x10-13 mol L-1)

CALCULATION OF pH 8. Calculate pH value of (a) .00001M HCI solution, and (b) 0.04M HNO3 solution assuming complete dissociation in each case. (4) (1.398) 9. Calculate the hydrogen ion concentration in moles/liter of a solution whose pH is 5.4 (3.98x10-6mole/liter) 10.

Explanation:

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