A. 0.05 moldm-³
B. 0.30 moldm-³
C. 0.50 moldm-³
D. 0.40 moldm-³
Correct Answer:
Option C – 0.50 moldm-³
Explanation
2g NaOH is contained in 100cm³
Xg NaOH is contained in 1000cm³
Xgram = (2×1000)/100
= 20g
Mole = 20/40 = 0.50mol/dm³
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![What volume of 0.20 mol dm‾³ NaOH solution would yield 5.0g of NaOH on evaporation to dryness? [NaOH = 40g mol‾¹]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "What volume of 0.20 mol dm‾³ NaOH solution would yield 5.0g of NaOH on evaporation to dryness? [NaOH = 40g mol‾¹]")