The ksp of agcl is 1.8 × 10–10. how do you know that mixing equal amounts of 0.04m solution of agno3 and 0.002m solution of nacl will lead to the formation of a precipitate?
a. [ag+]×[cl–] = ksp agcl
b. [ag+]×[cl–] < ksp agcl
c. [ag+]×[cl–] > ksp agcl

option c. [Ag⁺] × [Cl⁻] > Ksp AgCl,

Explanation:

Ksp is the product solubility constant.

The solubility equation for AgCl is:

AgCl ⇄ Ag⁺ + Cl⁻

The Ksp expression is:

Ksp = [Ag⁺] [Cl⁻]

Since Ksp = 1.8 ×  10⁻¹⁰, at equilibrium  [Ag⁺] [Cl⁻] = 1.8 ×  10⁻¹⁰.

When AgNO₃ dissolves in water it completely ionizes into Ag⁺ and NO₃⁻.

When NaCl dissolves in water it completely inoizes into Na⁺ and Cl⁻.

Uisng the molarity formula, M = n / V, you get n = M × V.

So, a volume V of a 0.04 M solution of AgNO₃ will yield 0.04V moles of Ag⁺ and the same volume V of a 0.002 M solution of NaCl will yield 0.02V moles of Cl⁻⁻

So the concentrations will be:

[Ag⁺] = 0.04V / (2V) = 0.02 M[Cl⁻] = 0.002V / (2V) = 0.001 M

And the product of the two concentrations will be:

0.02 × 0.0001 = 0.00002 = 2.0 ×  10⁻⁵

That product is much greater than 1.8 ×  10⁻¹⁰ meaning that the concentrations are higher than the equilibrium concentrations and the mixture will lead to the formation of a precipitate.

The option c., [Ag⁺] × [Cl⁻] > Ksp AgCl, describes that situation.

Woah that’s a lot to read xd i’ll try though. i’ll get back t you if. i know the andwer

The answer to your question really depends on three things: how much water you have, how cold it is to start out, and how cold the things around it are. water actually freezes when it gets to 32 degrees fahrenheit (0 degrees celsius), but the time it takes to get there may be different.  let's start with the first. if you take two glasses, and fill one with a tiny bit of water, and the other about halfway, then put them both in the freezer, the one with less water will freeze first (you can try this at home, but i recommend using plastic cups and not glass ones).  now let's move on to the second part. let's say you have two glasses, and you fill one with really cold water that has been in the refrigerator, and the other with really hot water from the sink. if you put both of them in the freezer, the one that started out colder will freeze first.  for the third part, let's imagine that you have two glasses with the same amount of water in them, and the water is at the same temperature. imagine putting one outside on a really really cold day in georgia, and having a friend in alaska put one outside on the same day. since it would be so much colder in alaska, the glass of water there would freeze before yours.  so, if you took a tiny bit of really cold water in a glass, and put it outside on a cold day in alaska, it would freeze a lot faster than a big glass of hot water outside on a cold day in georgia.