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answer
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How does changing the pH of a solution affect the equilibrium position of an acid-base reaction when starting with HF (hydrofluoric acid) and NaOH (sodium hydroxide)?
asked
2 days
ago
in
Chemical equilibrium
1
answer
5
views
Consider the reaction: 2NOBr(g) ⇌ 2NO(g) + Br2(g)The Kc value for this reaction at a certain temperature is 0.045. A catalyst is added to the reaction mixture that increases the rate of the forward and reverse reactions to the same extent. What effect will this catalyst have on the equilibrium position of the reaction mixture? Justify your answer using calculations.
asked
6 days
ago
in
Chemical equilibrium
1
answer
48
views
Calculate the change in enthalpy and entropy for the reaction Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) at 25°C given the following data:- ΔH°f for MgCl2(aq) = -641.3 kJ/mol- ΔS°f for MgCl2(aq) = -200.9 J/K/mol- ΔH°f for H2(g) = 0 kJ/mol- ΔS°f for H2(g) = 130.7 J/K/mol- ΔH°f for HCl(aq) = -167 kJ/mol- ΔS°f for HCl(aq) = -18.8 J/K/mol- ΔH°f for Mg(s) = 0 kJ/mol- ΔS°f for Mg(s) = 32.7 J/K/molAssume that ΔH°f and ΔS°f are independent of temperature.
answered
Jan 23
in
Inorganic Chemistry
1
answer
61
views
According to Jean Piaget's theory of cognitive development, why does object permanence develop around 8-9 months of age?
asked
Jan 20
in
Psychology
1
answer
20
views
Who proposed the fuzzy logic theory?
answered
Jan 20
in
Psychology
1
answer
8
views
Why is it important to consider the ecological validity of a study?
answered
Jan 17
in
Psychology
1
answer
7
views
According to Bandura, how does observational learning influence behaviour?
asked
Jan 15
in
Psychology
1
answer
45
views
What type of protein is a protein molecule that is attached to, or associated with the membrane of a cell or an organelle?
asked
Jan 8
in
Science
1
answer
22
views
What type of environment is maintained in homeostasis?
answered
Jan 8
in
Science
1
answer
8
views
The number of valence electrons determines variation of what property in nonmetals?
asked
Jan 2
in
Science
1
answer
26
views
More uv rays reach the ground due to a decrease in what layer in the stratosphere?
asked
Dec 31, 2024
in
Science
1
answer
9
views
How is a mammal developed if not inside of a placenta or a pouch?
answered
Dec 30, 2024
in
Science
1
answer
23
views
Common wisdom has it that the temporal bone (temporal = “time”) is so named because this area of the head (the temple) is where hair typically first turns gray, indicating the passage of what?
asked
Dec 30, 2024
in
Science
1
answer
17
views
What kind of reaction is a reaction in which two or more substances combine to form a single new substance?
asked
Dec 28, 2024
in
Science
1
answer
39
views
The negatively charged electrons are attracted to the positively charged what?
answered
Dec 27, 2024
in
Science
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