The pOH of a solution : 13.756
<h3>Further explanation</h3>Mass HCl=10.4 g
mol HCl (MW=36.5 g/mol) :
Volume of HCl = 500 ml = 0.5 L
HCl ⇒ H⁺ + Cl⁻
[H⁺]=[HCl]=0.57 M
pH= - log[H⁺]
pH=-log[0.57]=0.244
pH+pOH=14
pOH=14-0.244
pOH=13.756
Which color changes represent a positive reaction for the presence of starch using the iodine test?
1 answer:
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Answer:
Explanation:
Quantity of heat required by 10 gram of ice initially warm it from -5°C to 0°C:
here;
mass, m = 10 g
specific heat capacity of ice,
change in temperature,
Amount of heat required to melt the ice at 0°C:
where,
we know that no. of moles is = (wt. in gram) (molecular mass)
Now, the heat required to bring the water to 70°C from 0°C:
specific heat of water,
change in temperature,
Therefore the total heat required to warm 10.0 grams of ice at -5.0°C to a temperature of 70.0°C:
