2 M of 100 ml sodium sulphate is mixed with 3 M of 100 ml sodium chloride solution and 1 M of 200 ml calcium chloride solution then the ratio of concentration of cation and anion is

Which of the following solutions have the same concentration ?

(a) 20 g of NaOH in 200 mL of solutoin

(b) 0.5 mol of KCl in 200 mL of solution

(d) 20 g of KOH in 200 mL of solution

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The ammonia (NH3) released on quantitative reaction of 0.6 g urea (NH2CONH2) with sodium hydroxide NaOH can be neutralized by:

The correct option is D 100 mL of 0.2 N HClMoles of urea =(0.660=0.01) NH2CONH20.01+2NaOH→Na2CO3+2NH30.02 0.02 moles of NH3 reacts with 0.02 moles of HCl. Moles of HCl in option a =0.2×1001000=0.02

The ammonia $(N H_{3})$ released on quantitative reaction of 0.6 g urea $(N H_{2} C O N H_{2})$ with sodium hydroxide $N a O H$ can be neutralized by:

The correct option is D 100 mL of $0.2 N H C l$
Moles of urea $= (\frac{0.6}{60} = 0.01)$
$N H_{2} C O N H_{2} 0.01 + 2 N a O H \to N a_{2} C O_{3} + 2 N H_{3} 0.02$
0.02 moles of $N H_{3}$ reacts with 0.02 moles of HCl.
Moles of $H C l$ in option a $= 0.2 \times \frac{100}{1000} = 0.02$