Answer:
The Answer is 88%
Explanation:
The balanced ionic equation of the reaction
Looking at the above reactions
The original number of moles of 
= 3 × number of moles of 
= 3 × volume × concentration of 
Note: The formula for number of moles is volume × concentration
mol
The number of moles of left after its reaction with ascorbic acid
= 
x moles of 
= x volume x concentration of
Note: The division by 1000 is to convert mill liter to liter
Moles of ascorbic acid = moles of reacted
Hence
Mass of ascorbic acid = moles of ascorbic acid × molar mass of ascorbic acid
Weight% of ascorbic acid = mass of ascorbic acid/mass of sample x 100%
= 70.55/80 × 100%
= 88.1%
1) The question is incomplete. What is the compound which Fe(ClO4)2 reacts with?
It could be one of several salts.
2) Assuming it is Na2S the complete reaction is:
<span> Fe(ClO4)2 (aq) + Na2S(aq) → FeS (s) + 2NaClO4 (aq)
So, the next steps how how to work this problem assuming that reaction.
3) Show the ionic compounds as separate ions.
</span><span>
Fe(2+) (aq) + 2 ClO4(-) (aq) + 2 Na(+) (aq) + S(2-) (aq) → FeS(s) + 2 Na(aq) + 2 ClO4(-) (aq)
That is the total ionic equation.
4) Cancel the ions that appear on both sides of the equation , Na(+) and ClO4(-).
Fe(2+) (aq) + S(2-) (aq) → FeS(s) <-------- this is the net ionic equation
What happens to sodium and perchlorate is that they do not participate in the reaction but remain dissolved which is called "spectator ions".</span>
Answer:
4.31 atm.
Explanation:
- We can use the general law of ideal gas: <em>PV = nRT.</em>
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
- If n and V are constant, and have different values of P and T:
<em>(P₁T₂) = (P₂T₁)</em>
<em></em>
P₁ = 3.81 atm, T₁ = 25°C + 273 = 298 K,
P₂ = ??? atm, T₂ = 50°C + 273 = 323 K,
- Applying in the above equation
(P₁T₂) = (P₂T₁)
<em>∴ P₂ = (P₁T₂)/(T₁)</em> = (3.81 atm)(323 K)/(298 K) = <em>4.31 atm.</em>
Answer:
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Explanation:
