Question

A decimolar solution of NaOH contain _g NaOH per litre of the solution​

Answer 1

A deci-molar solution of NaOH contains 4 g NaOH per liter of the solution​.

We know that:

• 1M = 10 deci-molar
• 1 deci-molar = M/10
• 1M sodium hydroxide solution (NaOH)

Solution:

• In 1000 ml of a solution there is 40 grams of sodium hydroxide (NaOH).
• 40 gram NaOH = 1 mole of NaOH
• 1M sodium hydroxide solution contains = 40 g of NaOH
• (M/10) NaOH solution contains = 40 g x 0.1 / 1
• (M/10) NaOH solution contains = 4 grams of NaOH

Thus, 4 grams of NaOH is dissolved in a 1000ml or 1-liter solution.

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