WAEC Chemistry 2025 Theory — Question 64
Question 64 of 70 from the West African Examinations Council (WAEC) Chemistry 2025 Theory paper, with the correct answer and a full explanation.
Advertisement
Alternative A, Q1(b)(iii). Calculate the concentration of solution B in g/dm3.
Model answer
Molar mass of NaHCO3 = 23+1+12+(16x3) = 84 g/mol. Concentration in g/dm3 = conc. in mol/dm3 x molar mass = 0.067 x 84 = 5.59 g/dm3.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.