Post-UTME Chemistry 2006 Objective — Question 14
Question 14 of 19 from the Post-UTME Screening (Post-UTME) Chemistry 2006 Objective paper, with the correct answer and a full explanation.
Advertisement
A mixture of 12g of carbon and 64g of sulfur is heated until reaction is complete and none of the reactants is left over. What mass of the compound carbon II sulfide is formed?
- A. 152g
- B. 15.2g
- C. 76gCorrect
- D. 760g
Explanation
Moles C = 12/12 = 1mol; moles S = 64/32 = 2mol, matching the 1:2 stoichiometry for C + 2S -> CS2. Moles CS2 = 1mol; molar mass CS2 = 76g/mol; mass = 76g.
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.