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Levart [38]
3 years ago
8

Why dil. sulphuric acid cannot be used instead of dil.hcl in lab preparation of carbon dioxide gas?​

Chemistry
1 answer:
Andru [333]3 years ago
6 0

Answer:

Because Sulphuric acid(H2SO4) is one of the substance which have a very high vigourous reaction if mix with chemicals thats why we take the same sulphuric acid but having lighter effects known to be as Dil.Sulphuric And so it is generally use for precaution while during experimentations Thats why we use it.

Hope it helps

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Ima Chemist found the density of Freon-11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that
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If we assume this two gases behave like ideal gas, then we use the ideal gas law PV=nRT, where P is the pressure, V is the volume, n number of moles, R gas constant and T the temperature in kelvins. As well as the density formula D=\frac{m}{V}. First we calculate the molarity for Freon

CFCl_3 = (12+ 18.998 + 3 \times 35.453) =137.36\ g/mol.

The number of moles for freon are

D=\frac{m}{V} =\frac{ nM}{L} \implies n= \frac{DL}{M} = \frac{5.58 g \times L}{L \times 137.36g/mol}= 0.0406 mol

We know n=\frac{m}{M}, so we insert this concept to our ideal gas equation

PV=n \times RT=\frac{m}{M} \times RT= \frac{mRT}{M}. Since D=\frac{m}{V}, we insert this concept to the formula

PV=\frac{mRT}{M} \\P=\frac{mRT}{VM} = \frac{DRT}{M} \\\\\implies M= \frac{DRT}{P}. The measurements take place in same conditions so,

M=\frac{DRT}{P} = \frac{4.38g}{L}\times \frac{1L}{0.0406mol} = 107.9\ g/mol

3 0
3 years ago
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The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Bromine, or 79.904 grams.

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Explanation:

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