Answer:
Single Replacement reaction
Explanation:
Reaction Given:
2Na + 2HCI ------> H₂ + 2NaCl
Type of reaction = ?
Solution:
Look at the reactants and products of the reaction to know the type of reaction
2Na + 2HCI ------> H₂ + 2NaCl
In this reaction two reactant combine and give 2 products.
Reactant of the reaction
Na = Sodium
HCl = Hydrochloric acid
Product of the reaction
NaCl = sodium chloride
H₂ = hydrogen gas
So,
That sodium metal react with hydrochloric acid and produce salt and water gas
Type of Reaction:
This is a Single Replacement reaction, in which Sodium metal (Na) replace the Hydrogen (H) of the other compound and form Sodium Chloride salt (NaCl) and hydrogen liberate in the form of gas.
Answer:
Number of moles = 3.82 mol
Explanation:
Given data:
Number of moles of CO₂ = ?
Mass of CO₂ = 168.2 g
Solution:
Number of moles = mass/molar mass
Molar mass of CO₂ = 44 g/mol
By putting values,
Number of moles = 168.2 g/ 44 g/mol
Number of moles = 3.82 mol
M = 4.79 kg = 4790 g
d = 7.86 g/cm3
density = mass/volume
v = m/d
v = 4790/7.86
v = 609.4 cm3
1 cm3 = 10^-2 dL
v = 609.4 x 0.01 = 6.09 dL
