Answer is (3) - Pb²⁺.
<em>Explanation;</em>
Among the given choices PbCl₂ is insoluble in water. But it can be soluble in hot water. It appears as white precipitate. The Ksp of PbCl₂ is very small. That's why it is insoluble in water.
Fe²⁺ + 2Cl⁻ → FeCl₂ (soluble in water. Forms pale green color solution)
Mg²⁺ + 2Cl⁻ → MgCl₂ (soluble in water. Forms clear colorless solution)
Pb²⁺ + 2Cl⁻ → PbCl₂ (poorly soluble in water. Forms white precipitation)
Zn²⁺ + 2Cl⁻ → ZnCl₂ (soluble in water. Forms clear colorless solution)
Answer:
Convex mirrors are more study than flat mirrors.
Explanation:
This is the correct answer because i have already studied this
Answer:
Explanation:
The image ending 1318 is 2-chlorophenol. The image ending 1725 is 3-chlorophenol and the image ending 1917 is 4-chlorophenol
Answer:
The correct answer is option e, that is, 1.65 * 10^-2.
Explanation:
Based on the given information, the weight of NaI given is 74.2 grams and the weight of water given is 527 grams.
The final volume of the solution given is 566 ml.
The formula to calculate the moles is weight/molecular mass,
The moles of NaI will be,
= 74.2/150 = 0.494
Now moles of water will be,
= 527/18 = 29.3
The mole fraction of NaI will be,
= 0.494 / (0.494 + 29.3)
= 0.0165 or 1.65 * 10^-2
Hence, the mole fraction of NaI is 1.65 * 10^-2