1. Tardigrade
  2. Question
  3. Chemistry
  4. The ammonia prepared by treating ammonium sulphate with calcium hydroxide is completely used by NiCl2.6H2O to form a stable coordination compound. Assume that both the reactions are 100 % complete. If 1584 g of ammonium sulphate and 952 g of NiCl2.6H2O are used in the preparation, the combined weight (in grams) of gypsum and the nickel-ammonia coordination compound thus produced is . (Atomic weights in g mol-1: H = 1, N = 14, O = 16, S = 32, Cl = 35.5, Ca = 40, Ni = 59)

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The ammonia prepared by treating ammonium sulphate with calcium hydroxide is completely used by $NiCl_2.6H_2O$ to form a stable coordination compound. Assume that both the reactions are $100\%$ complete. If $1584 \,g$ of ammonium sulphate and $952\, g$ of $NiCl_2.6H_2O$ are used in the preparation, the combined weight (in grams) of gypsum and the nickel-ammonia coordination compound thus produced is ____.
(Atomic weights in g mol$^{-1}$: H = 1, N = 14, O = 16, S = 32, Cl = 35.5, Ca = 40, Ni = 59)

JEE AdvancedJEE Advanced 2018

Solution:

image
$\underset{952\,g = 4\,mol}{NiCl_2 . 6H_2O} + \underset{24\,mol}{6NH_3} \rightarrow \underset{(M = 232) 4\,mol}{[Ni(NH_3)_6]Cl_2} + 6H_2O$
Total mass $ = 12 \times 172 + 4 \times 232 = 2992\,g$