Answer:
Production of Citric Acid
It is an organic carboxylic acid and can be extracted from the juice of citrus fruits by adding calcium oxide to form calcium citrate, which is an insoluble precipitate that can be collected by filtration; the citric acid can be recovered from its calcium salt by adding sulfuric acid.
Explanation:
The expected freezing point of the solution is -12.01 °C
<h3>What is the freezing point of a substance?</h3>
The freezing point of a substance is the temperature at which a liquid changes to a solid.
When solutes are dissolved in solvents, they depress the freezing point of the solvent.
The expected freezing point of the solution is calculated using the formula;
where:
- ΔT = freezing point depression
- K = Freezing point constant
- m = molality of the solution
- i = Van't Hoff factor
For water, K = 1.86 ∘c/m
molality of solution = moles of solute/ mass of water in Kg
moles of NaCl = 85/58.5 = 1.453 moles
mass of water in kg = 450/1000 = 0.45
molality of solution = 1.453 / 0.45
molality of solution = 3.23 molal
i = 2
ΔT = 1.86 × 3.23 × 2
ΔT = 12.01
Freezing point of solution = Freezing point of water - ΔT
Freezing point of solution = 0 - 12.01
Freezing point of solution = -12.01 °C
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Explanation:
From the question it can be infered that initially only parent atoms were present in the rock and no daughter atom. So, initially there was only uranium atom and no lead atom. So, in total there were 500+1500= 2000 uranium atom. And no lead tom was there.
The answer is the first one
Answer:
HBr + H2O = H3O+ + Br-
So our conjugate acid is the H3O+ to H2O
Explanation:
A conjugate acid of a base results when the base accepts a proton.
Consider ammonia reacting with water to form an equilibrium with ammonium ions and hydroxide ions:
NH3 (aq) + H2O (l) ⇌ NH4+ (aq) + OH- (aq)
Ammonium, NH4+, acts as a conjugate acid to ammonia, NH3.
