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JEE Main 20204 SeptemberEvening Shift
Exam
JEE Main
Year
2020
Date
4 September
Shift
Evening Shift
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

JEE Main 2020 · 4 September · Evening Shift · Chemistry · Some Basic Concepts of Chemistry

A 100mL solution was made by adding 1 . 43g of Na _ 2 CO _ 3 . xH _...

A 100mL100mL solution was made by adding 1.43g1 . 43g of Na2CO3.xH2O.{Na}_{2}{CO}_{3} . {xH}_{2}O . The normality of the solution is 0.1N0 . 1N. The value of xx is _______

(The atomic mass of NaNa is 23g/mol23g / mol)

Correct answer

0

Step-by-step solution

Equivalent of solute =0.1×0.1= 0 . 1 \times 0 . 1

Mole of solute \left({Na}_{2}{CO}_{3}, {xH}_{2}O\right) = [ 0 . 1 \times 0 . 1 ] \dfrac{1}{2}</p><p>Massof</p><p>Mass of{Na}_{2}{CO}_{3} . {xH}_{2}O = [ 0 . 1 \times 0 . 1 ] \dfrac{1}{2} \times [ 106 + 18x ] = 1 . 43</p><p></p><p>⇒ [ 106 + 18x = 286</p><p></p><p>18x = 180</p><p></p><p>x = 10

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