The volume of 0.25 moldm-3 solution of KOH that would yie...
The volume of 0.25 moldm-3 solution of KOH that would yield 6.5g of of solid KOH on evaporation is (K = 39.0; o = 16.0; H = 1.00)
464.30 cm3
625.00 cm3
1000.00 cm3
2153.80 cm3
Correct answer is A
number of moles = molar concentration x volume(dm3)
molar concentration(C) = 0.25mol/dm3, volume = ? and number of mole(n) = massmolarmass = 6.556 ( where 56g/mol = molar mass of KOH)
6.556 = 0.25 x V
V = 0.116070.25 = 0.46428dm^3 → 464.3cm^3
The impurities formed during the laboratory preparation of chlorine gas are removed by ...
Alkaline hydrolysis of naturally occurring fats and oils yields...
Which of the following statements is not a postulate of the kinetic theory of gases? ...
From the diagram above, an ideal gas can be represented by ...
A positive brown ring test indicates the presence of...
In which of the following changes is ∆S negative ? ...
Which of the following substances is suitable solvent for perfumes? ...
Kerosine is commonly used to remove the red colour stain of palm oil from cloths because it ...