Yes, It is important to know the volume of Unknown acid or base to be titrated.
Titration is carried out in order to find out the concentration (i.e. molarity) of unknown acid or base. In this process a standard solution of acid or base is taken and is titrated with known volume of of titrant. At end point (neutralization) the amount of standard titrant utilized is calculated and following formula is employed to calculate the unknown concentration of unknown solution.
M₁V₁/n₁ = M₂V₂/n₂
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ioda
A) CuBr2
b) Al(NO3)3
c) Ca3(PO4)2
d) Fe2S3
e) HgCl2
f) Mg(C2H3O2)2
Answer:
0.0928 grams of oxygen was collected.
Explanation:
Volume of oxygen gas collected = V= 75.3 mL = 0.0753 L (1 mL = 0.001 L)
Temperature of the gas = T = 25°C = 25+ 273 k = 298 K
Pressure of the gas = P - = 742 Torr - 24 Torr = 718 Torr
1 atm = 760 Torr
Moles of oxygen gas = n
Using an ideal gas equation;
n = 0.0029 mol
Mass of 0.0029 moles of oxygen gas :
0.0029 mol × 32 g/mol = 0.0928 g
0.0928 grams of oxygen was collected.
1) Na3PO4 (aq) + 3 KOH (aq) → 3 NaOH (aq) + K3PO4 (aq)
Displacement Reaction
2)MgF2 (s) + Li2CO3 (s) → MgCO3 (s) + 2 LiF (s)
Displacement Reaction
3) I don't know
4)2 RbNO3 + BeF2 → Be(NO3)2 + 2 RbF
5)2 AgNO3 (aq) + Cu (s) → Cu(NO3)2 (aq) + 2 Ag (s)
Answer:
Thermochemistry
Explanation:
Thermochemistry is the area of study in chemistry that is concerned with the heat transfers that occur during chemical reactions.