Just have to do antilog
[H+]= 10^-5.6
Answer:
There are two possible answers to the question
I) decreasing the pressure of the system
II) decreasing the temperature of the system
Explanation:
Looking at the equation of the reaction, it can be seen that the reaction is endothermic. This implies that decreasing the temperature favours the reverse reaction and more NO2 is produced.
Secondly, decreasing the pressure drives the equilibrium position towards the side having the higher total volume hence decreasing the pressure favours the reverse reaction and more NO2 is produced.
You cannot find it if you do not know the information. Was there a molar mass given or do you know if it is asking for the molar mass?
Answer:
Magnitude of work done = 24.28 J
Explanation:
No. of moles = Reacting mass/ Molar mass
Reacting mass of Na = 0.45 g
Molar mass of sodium = 23g/mol
∴ No. of moles of sodium = 0.45/23 = 0.0196 mole
If 2 moles of Na react with water at 25°C and 1 atm, 24.5 L of H₂ was formed.
∴ when 0.0196 mole of Na react with water under the same conditions, (24.5×0.0196)/2 L of H₂ will be formed.
⇒ (24.5×0.0196)/2 L = 0.24 L
0.24 L × 1 atm = 0.24 L . atm
Since 1 L · atm = 101.3 J
∴ 0.24 L . atm = (0.24 L . atm ×101.3)/1 = 24.28 J
Magnitude of work done = 24.28 J
Answer:
Double replacement
Precipitation reaction
Explanation:
You have the reaction:
REACTANTS PRODUCTS
BaCl₂ (aq) + Na₂SO₄ (aq) ⇒ 2NaCl (aq) + BaSO₄(s)
The general form of a double replacement reaction is the following:
AB + CD ⇒ CD + AB
The reactants basically, exchanged partners. In the case of your problem, Barium(Ba) and Sodium(Na) switched places. So this makes it a double-replacement reaction.
Now how do I know it is a precipitation reaction. A precipitation reaction occurs when two solutions combine and salt is formed. Salt is solid, so how do I know that's what occured? Look at your equation again:
BaCl₂ (aq) + Na₂SO₄ (aq) ⇒ 2NaCl (aq) + BaSO₄(s)
aq means aqueous (liquid)
s means solid
If you look at the product formed in the reaction, from two solutions, it formed a solid. So this is your clue as to why it is a precipitation reaction.
