Some Basic Concepts of Chemistry - Result Question 87
####25. The ammonia prepared by treating ammonium sulphate with calcium hydroxide is completely used by $NiCl _2 \cdot 6 H _2 O$ to form a stable coordination compound. Assume that both the reactions are $100 %$ complete. If $1584 g$ of ammonium sulphate and $952 g$ of $NiCl _2 \cdot 6 H _2 O$ are used in the preparation, the combined weight (in grams) of gypsum and the nickel-ammonia coordination compound thus produced is
(Atomic weights in $g mol^{-1}: H=1, N=14, O=16, S=32$,
$Cl=35.5, Ca=40, Ni=59$ )
(2018 Adv.)
Some Basic Concepts of Chemistry
Assertion and Reason
Read the following questions and answer as per the direction given below:
(a) Statement I is true; Statement II is true; Statement II is the correct explanation of Statement I.
(b) Statement I is true; Statement II is true; Statement II is not the correct explanation of Statement I.
(c) Statement I is true; Statement II is false.
(d) Statement I is false; Statement II is true.
Show Answer
Solution:
- Molality is defined in terms of weight, hence independent of temperature. Remaining three concentration units are defined in terms of volume of solution, they depends on temperature.
