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What will be the molarity M of 20\% w/w NaOH solution if density of solution is 1.2g mL?
⇒ Molarity = 6 M.
What is the molarity of a 20\% NaOH solution?
Calculate the molarity of the solution. 20 gr of NaOH correspond to 0.5 moles which are contained in 0.5 liter of solution. In one liter of solution there will be (2)(0.5) = 1 mole and thus the solution is 1 M.
How do you find moles with molarity and density?
If you have a solution, you multiply the molarity by the volume in litres. There are two steps: Multiply the volume by the density to get the mass. Divide the mass by the molar mass to get the number of moles.
What is the molarity of 20\% h2 S o4 solution?
20\% (w/v) means 20 g of H2SO4 is present in 100 mL (= 0.1L) of solution. M = 0.204 moles/0.1 L = 0.204 M.
What is the density of a 20\% (W/W) solution of NaOH?
Join / Login Question A 20\% (W/W) solution of NaOH is 5 M. The density of the solution is A 1 g.ml−1 B 2 g.ml−1
How many grams of NaOH are in a 100ml solution?
A 20\% weight by volume, or (w/v), solution of NaOH is 20g of NaOH per 100 ml. The definition of molarity is moles per litre, so we need to work out how many moles we have in 1 litre, and for this, we need the molecular weight of NaOH, which is 39.997 g/mol. So, in 100 ml we have 20 g of NaOH.
What is the meaning of 2020\% NaOH solution?
20\% NaOH solution simply means ->. Usually 20\% of a solution is used to describe the mass percent of the solute in the solution i.e the w/w\% (weight by weight percentage) of the solution. In this case this means that 100 grams of this solution will contain 20 grams of Sodium Hydroxide.
What is the molarity of 40\% NaOH?
Calculate Molarity of 40\% NaOH (w/W). The density of solution is 1.2 g/ml. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.