4   g equimolar mixture of NaOH and Na 2 CO 3 contains xg of NaOH and yg of Na 2 CO 3 . The value of x…

4 g equimolar mixture of NaOH and Na2CO3 contains xg of NaOH and yg of Na2CO3. The value of x is g. (Nearest integer)

Solution

Total mass=4g

Now

NaOH: a mol WNaOH+WNa2CO3=4

Na2CO3: 'a' mol ⇒40a+106a=4

⇒a=4146 mol

⇒ therefore mass of NaOH is: 4146×40 g

=1.095≈1

Asked in: JEE Main 2021 (20 Jul Shift 2)

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