Question

The mass of NaOH to be dissolved to make 100 cm' of 0.15 M Naoh solution is:
(A) 0,3 g
(C) 0.5 g
(B) 0.4 g
(D) 0.6 g​

Answer 1

Answer. In 100mL100mL of 0.5MNaOH0.5MNaOH solution, there are 100ml×0.5molNaOHL=50mmolNaOH100ml×0.5molNaOHL=50mmolNaOH. Molar mass of NaOHNaOH = 40gmolNaOH40gmolNaOH. Mass of NaOHNaOH in 50mmol50mmol is 50×10−3×40g=2g50×10−3×40g=2g.

I hope this is help for you.

Answer 2

Answer:

A is correct

Explanation:

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