The relationship between boiling point of liquid and elevation is inverse. Means, with increase in altitude the boiling point will decrease. This is because with increase in altitude the atmospheric pressure will decrease, as boiling point is temperature at which vapor pressure of liquid becomes equal to the atmospheric pressure.
Hence, the city where boiling point of specific liquid is 141 °C is at higher elevation. And the liquid with boiling point of 145 °C is experiencing higher atmospheric pressure due to less altitude of the city it is present in.
Answer:
Energy was released when the sodium and hydroxide ions formed new bonds with the water.
Explanation:
The correct option is B.
Indirect lighting refers to fixtures which direct the light upward to bounce off the wall or ceiling to light a room. This type of lighting is diffusely reflected and create less glare compare to direct lighting. Direct lighting usually direct the light downward, directly on to the surface below to provide illumination.
Change in freezing point = Kf * (molality)* i
1) Kf for acetic acid = 3.90 C/molal
2) Molality = moles solute/kilograms
3.00 grams Mg(ClO2)2/ 30.0 g acetic acid x 1000 g/kg x 1mole Mg(ClO2)2 /159.2 grams = 0.628
3) i is the van’t hoff factor ;
Mg(ClO2)2 ; 24.3 + 2(35.45) + 4(16) = 159.2
Mg(ClO2)2 ==⇒ Mg2+ + 2ClO2-
The value of i is 3, since 3 ions are produced
Change in freezing point = 3.90 C/molal x 0.628 x 3 = 7.35 Celsius
Freezing point of solution = 16.6 – 7.35 = 9.3 Celsius