Hydrogen And Its Compounds Question 11
Question: Hard water is not fit for washing clothes because
Options:
A) it contains $ Na_2SO_4 $ and $ KCl $
B) It gives precipitate
C) it contains impurities
D) it is acidic in nature
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ 2RCOONa+M{g^{2+}}\to \underset{Insoluble}{\mathop{{{(RCOO)}_2}}}Mg+2N{a^{+}} $
$ 2RCOONa+C{a^{2+}}\to \underset{Insoluble}{\mathop{{{(RCOO)}_2}}}Ca+2N{a^{+}} $
BETA
