
Concept explainers
(a)
Interpretation:
The tap water has to be identified as homogenous or heterogeneous mixture.
Concept Introduction:
Mixture:
A mixture always contains two or more substances that can be present in varying amounts. The components of a mixture do not lose their identities and may be separated by physical means. There are two types of mixture,
- Homogeneous mixture
- Heterogeneous mixture
Homogeneous mixture:
Homogenous mixture consist of a single phase be it liquid, gas, or solid the chemical composition is the same for any sample of the mixture.
Heterogeneous mixture:
Heterogeneous mixture consist of different phase are not uniform they will not have an identical composition.
(b)
Interpretation:
The carbonated beverage has to be identified as homogenous or heterogeneous mixture.
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The oil and vinegar salad dressing has to be identified as homogenous or heterogeneous mixture.
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
The people in the football stadium have to be identified as homogenous or heterogeneous mixture.
Concept Introduction:
Refer to part (a).

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Chapter 1 Solutions
EBK FOUNDATIONS OF COLLEGE CHEMISTRY
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- Given Kp for 2 reactions. Find the Kp for the following reaction: BrCl(g)+ 1/2 I2(g) ->IBr(g) + 1/2 Cl2(g)arrow_forwardFor a certain gas-phase reaction at constant pressure, the equilibrium constant Kp is observed to double when the temperature increases from 300 K to 400 K. Calculate the enthalpy change of the reaction, Ah, using this information.arrow_forwardHydrogen bonding in water plays a key role in its physical properties. Assume that the energy required to break a hydrogen bond is approximately 8 kJ/mol. Consider a simplified two-state model where a "formed" hydrogen bond is in the ground state and a "broken" bond is in the excited state. Using this model: • Calculate the fraction of broken hydrogen bonds at T = 300 K, and also at T = 273 K and T = 373 K. • At what temperature would approximately 50% of the hydrogen bonds be broken? • What does your result imply about the accuracy or limitations of the two-state model in describing hydrogen bonding in water? Finally, applying your understanding: • Would you expect it to be easier or harder to vaporize water at higher temperatures? Why? If you were to hang wet laundry outside, would it dry more quickly on a warm summer day or on a cold winter day, assuming humidity is constant?arrow_forward
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