Answer:
(d) Na₂CO₃ + CuSO₄ → Na₂SO₄ + CuCO₃
Explanation:
Chemical reaction:
Na₂CO₃ + CuSO₄ → Na₂SO₄ + CuCO₃
This is metathesis reaction. It is also called double displacement reaction. The cation and anions of both reactants exchange with each others.
The cation (Na⁺) of sodium carbonate is exchange with cation (Cu²⁺) of copper sulfate and form sodium sulfate and copper carbonate.
Double replacement:
It is the reaction in which two compound exchange their ions and form new compounds.
AB + CD → AC + BD
Valance electron are called
How does the law of conservation of mass apply to this reaction: C2H4 + O2 → H2O + CO2?
The osmotic pressure of a solution made from 12.5 g of CaCl2 in enough water to make 500 mL, if CaCl2 is 78.5% dissociated at 30oC is 167.087 atm
<h3>
Define osmotic pressure:-</h3>
Osmotic pressure and osmosis are connected. Osmosis is the passage of a solvent through a semipermeable membrane into a solution. The pressure that halts the osmosis process is known as osmotic pressure. Osmotic pressure is a collective attribute of material because its value is determined by the solute's concentration rather than its chemical composition.
The formula used to calculate Osmotic Pressure is:-
π = M x R x T x i
Where;
π =osmotic pressure (in atm)
M=molar concentration (in mol/L)
=(given mass/molar mass)/volume=(12.5g /111.0)/(500/1000)
=0.224 mol/L
R=Universal gas constant (0.08206 L.atm/mol.K)
T=absolute temperature (in K) = 30.C + 273 = 303 K
i= van't Hoff factor of solute =3
using the formula and substituting values;
π=0.224 x 0.08206 x 303 x 3
= 167.087 atm
The osmotic pressure is 167.087 atm
Learn more about osmotic pressure here:-
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