Answer:
Correct option is A)
[H
+
]=
KaC
=
1.8×10
−6
=1.34×10
−3
pH=−log[H
+
]
=2.88
Explanation:
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Answer:
Bromine displaced iodide to form iodine
Explanation:
In this experiment, liquid bromine was allowed to react with a solution of potassium iodide.
Initially, we had a colorless 
solution which was mixed with light orange 
. If we add a light orange solution to a colorless solution, liquid bromine will get diluted and we'll see a slight decrease in its color intensity, however, if no reaction takes place, no color change will occur.
In the experiment, however, we examine a formation of a deep brown solution. Remember that iodine solution would form a brown solution.
As a result, bromine displaced iodide anion from potassium iodide:
A.)
During a lunar eclipse the earth gets in the way of the moon and blocks the sun’s light from it.
4C7H5N3O6 + 21O2 = 28CO2 + 10H2O + 6<span>N<span>2
</span></span><span>According to the reaction equation, it can be seen that TNT and O2 have following stoichiometric ratio:
</span><span>
n(</span>C7H5N3O6)<span> : n(O2) = 4 : 21
</span>n(O2) = 21/4 x n(C7H5N3O6) = 5.25 x n(C7H5N3O6)
n(C7H5N3O6) = m/M= <span>0.853/227 = 0.0038 mole
</span>
n(O2) = 5.25 x n(C7H5N3O6) = 5.25 x 0.0038 = 0.02 mole
m(O2) = n x M = 0.02 x 32 = 0.64 g = 640mg
