MHT CET Chemistry question

What will be the value of molality for an aqueous solution of 10% W/W NaOH? (Na = 23, O = 16, H = 1)

Answer: (A)

Solution

10 g NaOH (0.25 mol) is present in 90 g (0.090 kg) of water, so molality =

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Question ID VK-061211