numericals about strength of solution

Strength of a Solution - Strength of a solution is defined as the amount of the solute in gms, present in one litre of the solution. It is expressed as gL - 1 . Mathematicall..

Strength of a solution is defined as the amount of the solute in gms, present in one litre of the solution. It is expressed as gL - 1..

01. An object of mass 5 kg is lifted up through a distance of 2 meter. What is the work done? Solution: W = F x s Also, force acting on the object is F = mg [Newton's second law of motion] Mass of the object (m) = 5 kg Distance moved = 2m Therefore, Work done = F x s 02. How ..

01. A body of mass 2kg is raised to a height of 25m. Calculate the potential energy possessed by the body. Solution: Mass of the body (m) = 2kg Height (h) = 25 m Potential energy of the body = mgh 02. A bag of rice weighs 75kg. To what height is it raised if the work done in lifting it is..

01. A man of mass 60 kg runs up a flight of 60 steps in 40 seconds. If each step is 20 cm high, calculate his power. Solution : Since the man runs up a flight of steps, the work done will be equal to the potential energy. Height = height of one step x number of ste..

In gaseous state, hydrogen halides are covalent. But in aqueous solutions, they ionize and behave as acids. The acidic strength of these acids decreases in the order: HI > HBr > HCI > HF Thus, HF is the weakest acid and HI is the strongest acid among these halogen hydrides. Exp..

A chemical laboratory has 500 ml of 50% acid solution. How much water should be added so that the strength of the solution is 30%? => 33.33 ml or 250 ml or 183.33 ml or 333.33 ml..

A current of 0.50 ampere is passing through a CuSO 4 solution. How many Cu + + ions will be deposited on cathode in 10 second..

The total number of sublevels or sub-shells possible in each energy level is equal to the numerical value of 'n'. Thus 'n' = 1 energy level can have only one sublevel which is 'l' = 0 or the 's' orbital, 'n' = 2 energy level can have two sublevels corresponding to 'l' = 0 (s) and 'l' = 1..

[H 3 O + ] = 6.2 x 10 - 9 M pH = -log [H 3 O + ] pH = -log [6.2 x 10 - 9 ] = -(log 6.2 - 9 log 10) = -log 6.2 + 9 x 1 (log 6.2 = 0.79) = 9 - 0.79 = 8.21 8. Acid A, B, C and D have the following pKa values: A = 1.5, B = 3.5, C = 2.0, D = 5.0. Arrange these acids in..