Look at the reaction below. upper h subscript 2 upper s upper o subscript 4 (a q) plus upper c a (upper o upper h) subscript 2 (
2 answers:
In the given reaction, the substance that is the base of the reaction is . The correct option is C.
The base is a slippery liquid that is bitter and turns red litmus paper to blue.
Bases react with acids to form salts.
Then bases have pH above 7.
Examples of bases are calcium carbonate, sodium hydroxide, etc.
Thus, the correct option is C.
Learn more about bases
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Answer:
3.1atm
Explanation:
Given parameters:
Volume of gas = 2L
Number of moles = 0.25mol
Temperature = 25°C = 25 + 273 = 298K
Unknown:
Pressure of the gas = ?
Solution:
To solve this problem, we use the ideal gas equation.
This is given as;
PV = nRT
P is the pressure
V is the volume
n is the number of moles
R is the gas constant = 0.082atmdm³mol⁻¹K⁻¹
T is the temperature
P =
Now insert the parameters and solve;
P = = 3.1atm