At 27°C, 58.5g of sodium chloride is present in 250cm...
At 27°C, 58.5g of sodium chloride is present in 250cm\(^3\) of a solution. The solubility of sodium chloride at this temperature is?
(molar mass of sodium chloride = 111.0gmol\(^{-1}\))
2.0 moldm\(^{-3}\)
0.25 moldm\(^{-3}\)
1.0 moldm\(^{-3}\)
0.5 moldm\(^{-3}\)
Correct answer is A
Given the Mass of the salt = 58.5g
Volume = 250 cm\(^3\) = 0.25 dm\(^3\)
Mass concentration = \(\frac{Mass}{Volume}\)
= \(\frac{58.5}{0.25}\) = 234 gdm\(^{-3}\)
Solubility (in moldm\(^{-3}\) = \(\frac{234}{111} \)
= 2.11 moldm\(^{-3}\)
\(\approxeq\) 2.0 moldm\(^{-3}\)
2KClO\(_3\)(s) → 2KCl(s) + 3O\(_2\)(g) The importance of the catalyst in the reaction abo...
What is the principal ore of iron, from which iron is extracted? ...
How many lone pair (s) of electrons is present in HF? ...
The presence of an impurity in substance will cause the melting point to ...
Which of the following atoms represents deuterium? ...
A metal that can be extracted from cassitertite is ...
The product of the reaction between propanoic acid and ethanol is ...
The molar enthalpy change accompanying the removal of an electron from a gas phase atom or ion ...