In order to find out the ranking of ions basicity, check the
pKa values of each ions. The principle that you need to remember is that the
stronger the acid the weaker the corresponding conjugate base. The pKa dictates
acid value of the compound. The answer would be CH3NH, CH3O-, and CH3CH2-.
Answer:
1) a. 2Fe(s) + 3Cl₂(g) → 2FeCl₃(s).
2) a. 0.4477 mol.
b. 0.4477 mol.
c. 72.61 g.
Explanation:
1) Consider the following reaction: iron (s) + chlorine (g) à iron (III) chloride
<em>a. Write the balanced chemical equation.</em>
- The balanced equation should apply the law of conversation of mass that the no. of different atoms is equal in both sides of the reaction (reactants and products sides).
So, the balanced chemical equation is:
<em>2Fe(s) + 3Cl₂(g) → 2FeCl₃(s).</em>
It is clear that 2 mol of Fe(s) react with 3 mol of Cl₂(g) to produce 2 mol of FeCl₃(s).
<em>2) 25.0 g of iron reacts with excess chlorine gas. </em>
<em>a. Calculate the moles of iron reactant.</em>
- The no. of moles of Fe (n) can be calculated using the relation:
<em>n = mass/molar mass =</em> (25.0 g)/(55.845 g/mol) = <em>0.4477 mol.</em>
<em>b. Calculate the moles of iron (III) chloride.</em>
<em><u>Using cross multiplication:</u></em>
2 mol of Fe produce → 2 mol of FeCl₃, from stichiometry.
∴ 0.4477 mol of Fe produce → 0.4477 mol of FeCl₃.
∴ The no. of moles of iron (III) chloride produced is 0.4477 mol.
<em>c. Calculate the mass of iron (III) chloride.</em>
- We can calculate the mass of iron (III) chloride produced using the relation:
mass of iron (III) chloride = (no. of moles)*(molar mass) = (0.4477 mol)*(162.2 g/mol) = 72.61 g.
Answer:
A
Explanation:
The Charles law states that the volume of an ideal gas increases when temperature is increased under constant pressure. The pressure inside the balloon is always equal to the atmospheric pressure. Therefore answer A demonstrate the Charles law.
Common salt besides being used in kitchen can also be used as the raw material for making washing soda and baking soda.
The overall balanced reaction for washing soda preparation:
2NaCl + CaCO3 → Na2CO3 + CaCl2
NaCl is sodium chloride or common salt
Na2CO3 is sodium carbonate or washing soda
CaCO3 is calcium carbonate or limestone
The overall balanced reaction for baking soda preparation:
NaCl + CO2 + NH3 + H2O → NaHCO3 + NH4Cl
Baking soda (NaHCO₃ - sodium bicarbonate) is white, solid, crystalline salt or appears as a fine powder.
NH3 is ammonia
CO2 is carbon (II) oxide
More about baking soda: brainly.com/question/20628766
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