Answer:
12.55 → pH
Explanation:
pH = - log [H⁺]
pH = 14 - pOH
pOH = - log [OH⁻]
pOH = - log 0.035 = 1.45
14 - 1.45 = 12.55 → pH
Remember that [OH⁻] . [H⁺] = 1×10⁻¹⁴ M
It is a compound i hope i helped
Answer:
133.56kPa
Explanation:
Applying Pressure Law,
P/T = P'/T'....................... Equation 1
Where P = Initial pressure, T = Initial Temperature, P' = Final pressure, T' = Final Temperature.
From the question, we were asked to calculate P'
There, we make P' the subject of the equation
P' = PT'/T...................... Equation 2
Given: P = 100kPa, T = 25°C = (273+25) = 298K, T' = 125°C = (273+1250K = 398 K
Substitute these values into equation 2
P' = (100×398)/298
P' = 133.56kPa
Hence the pressure is 133.56kPa
Answer:
The hypothetical van't Hoff factor of magnesium nitrate,
is <u>3 .</u>
Explanation:
Lets calculate -
We know that ,
Dissociation should be 100% for the hypothetical vant hoff factor , that is
and 
for
Therefore , putting the given values ,
<u>Hence , the answer is 3.</u>
