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Morgarella [4.7K]
3 years ago
11

Silver nitrate reacts with calcium chloride as

Chemistry
1 answer:
Ilya [14]3 years ago
7 0

Answer: 11.8 grams of CaCl_2 is required.

Explanation:

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in L)}}     .....(1)

Molarity of AgNO_3 solution = 0.506 M

Volume of solution = 420 mL

Putting values in equation 1, we get:

0.506M=\frac{\text{Moles of} AgNO_3\times 1000}{420ml}\\\\\text{Moles of }AgNO_3=\frac{0.506mol/L\times 420}{1000}=0.212mol

The balanced chemical reaction is:

2AgNO_3+CaCl_2\rightarrow 2AgCl+Ca(NO_3)_2

2 mole of AgNO_3 requires = 1 mole of CaCl_2  

0.212 moles of AgNO_3 require = \frac{1}{2}\times 0.212=0.106 moles of CaCl_2

Mass of  CaCl_2 =moles\times {\text {Molar Mass}}=0.106mol\times 111g/mol=11.8g

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