वितळलेल्या `CaCl_(2) पासून `Ca` ची `20 g` निर्मिती करण्यासाठी फॅराडेच्या दृष्टीने किती वीज लागते

Calcium chlroide when dissolved in water dissociates into its ions according to the following equations. CaCl_(2)(aq) to Ca^(2+)(aq) + 2Cl^(-1) (aq) Calculate the number of ions obtained from CaCl_(2) when 222g of it is dissolved in water.

A solution of CaCl_(2) was prepared by dissolving 0.0112g in 1 kg of distilled water (molar mass of Ca = 41 g mol^(-1) and Cl =35.5 g mol^(-1) ). The freezing point constant of water is 2 "K kg mol"^(-1) . The depression in the freezing point of the solution is :

Number of Ca^(+2)" and "Cl^(–) ion in 111 g of anhydrous CaCl_(2) are -

10 g of a sample of a mixture of CaCl_(2) and NaCl is treated to precipitate all the calcium as CaCO_(3) . This CaCO_(3) is heated to convert all the Ca to CaO and the final mass of CaO is 1.62 g.The percent by mass of CaCl_(2) in the origial mixture is