How many grams of NaOH is required to make 250 cm3 solution of 0.025 M NaOH solution?

0.025 M NaOH solution which means that 0.025 moles of NaOH are present in 1 L of solution.1000 cm3 0.025 M NaOH solution contains NaOH = 0.025 mol.250 cm3 0.025 M NaOH solution contains NaOH = (0.025/1000) x 250 mol = 0.00625 molThe molar mass of NaOH is 40 g/mol.Hence, the mass of 0.00625 moles of NaOH = 0.00625 x 40 g = 0.25 g

How many grams of NaOH is required to make 250 cm3 solution of 0.025 M NaOH solution?

0.025 M NaOH solution which means that 0.025 moles of NaOH are present in 1 L of solution.1000 cm3 0.025 M NaOH solution contains NaOH = 0.025 mol.250 cm3 0.025 M NaOH solution contains NaOH = (0.025/1000) x 250 mol = 0.00625 molThe molar mass of NaOH is 40 g/mol.Hence, the mass of 0.00625 moles of NaOH = 0.00625 x 40 g = 0.25 g

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How many grams of NaOH is required to make 250 cm³ solution of 0.025 M NaOH solution?

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25 g

0.25 g

0.025 g

2.5 g

answer is B.

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Detailed Solution

0.025 M NaOH solution which means that 0.025 moles of NaOH are present in 1 L of solution.
1000 cm³ 0.025 M NaOH solution contains NaOH = 0.025 mol.
250 cm³ 0.025 M NaOH solution contains NaOH = (0.025/1000) x 250 mol = 0.00625 mol
The molar mass of NaOH is 40 g/mol.

Hence, the mass of 0.00625 moles of NaOH = 0.00625 x 40 g = 0.25 g

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