See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

[B]t + [C]t = 2 M   4 t 1 4 2 t B 2k 2 2 10 4 C 3k 9 3 3 10           t t 4 B C 9  putting it in t t t 4 C C 2M 9 18 C M 13    Hence Bt = 8 M 13