Advertisements
Advertisements
प्रश्न
Calcium chloride when dissolved in water dissociates into its ions according to the following equation.
\[\ce{CaCl2} (aq) → {Ca^{2+} (aq) + 2{Cl}- (aq)}\]
Calculate the number of ions obtained from CaCl2 when 222 g of it is dissolved in water.
Advertisements
उत्तर
\[\ce{CaCl2} → Ca^{2+} + 2Cl^-\]
111 g (1 moles) → 1 moles + 2 moles
222 g (2 moles) → 2 moles + 4 moles
Total number of ions given by 2 moles of CaCl2 = 6
Number of ions = Number of moles of ions × NA
= 6 × 6.022 × 1023
= 3.6132 × 1024 ions
APPEARS IN
संबंधित प्रश्न
Calculate the molar mass of the following substance:
Hydrochloric acid, HCl
Define the term Relative atomic mass.
Calculate the weight of one molecule of oxygen.
[Avogadro’s number = 6 × 1023, O = 16 ]
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
What mass of ammonium nitrate should be heated to produce 8.96L of steam?
A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at STP)
NH4NO3 → N2O + 2H2O
Determine the percentage of oxygen in the ammonium nitrate?
Cost of Sugar (C12H22 O11) is Rs 40 per kg; calculate its cost per mole.
Correct the statement, if required.
The relative atomic mass of an element is the number of times one molecule of an element is heavier than `1/12` the mass of an atom of C12.
1 mole of any substance contains ______ molecules.
Deduce the number of molecules of the following compound in the given quantity.
7.1 g chlorine
If 0.2 mol of the following substance is required how many grams of that substance should be taken?
magnesium oxide
