Recent activity by RolandCoble3

1 answer 31 views

How does changing the pH affect the equilibrium position of a redox reaction involving a weak acid and its conjugate base? Provide a specific example to illustrate your answer.

asked 2 days ago in Chemical equilibrium

1 answer 9 views

A student has a solution of AlF3 with a concentration of [AlF3] = 0.015 M, which is in equilibrium according to the equation: AlF3 (s) ⇌ Al3+ (aq) + 3 F- (aq). Calculate the new equilibrium concentration of F- ions if 0.001 mol of NaF is added to the solution initially at equilibrium. (Ksp of AlF3 = 2.0 x 10^-23, NaF is a common ion with F-)

asked Jan 22 in Chemical equilibrium

1 answer 74 views

A chemistry student wants to see the effect of adding a specific buffer on the equilibrium position of a 0.1 M acetic acid (CH3COOH) and 0.1 M sodium acetate (CH3COONa) solution. If the initial pH of the solution is 4.7, what is the pH of the solution after adding the buffer? (Ka of acetic acid is 1.8 x 10^-5).

answered Jan 22 in Chemical equilibrium

1 answer 56 views

A chemist mixes 0.1 mol of hydrogen (H2) with 0.2 mol of nitrogen (N2) in a 2 L flask at 400°C. The reaction H2(g) + N2(g) ⇌ 2NH3(g) establishes equilibrium. Calculate the equilibrium concentrations of hydrogen, nitrogen, and ammonia if the Kc value of the reaction at this temperature is 1.5 x 10^-2.

answered Jan 22 in Chemical equilibrium

1 answer 5 views

Please evaluate the criticisms of Buhler's lifespan development theory?

asked Jan 16 in Psychology

1 answer 21 views

Please compare and contrast the cognitive-behavioural and humanistic perspectives on motivation.

asked Jan 15 in Psychology

1 answer 15 views

What is inattentional blindness?

asked Jan 14 in Psychology

1 answer 6 views

What is the main focus of contemporary psychology?

answered Jan 14 in Psychology

1 answer 33 views

What is the difference between perception and discrimination thresholds?

answered Jan 13 in Psychology

1 answer 30 views

What term refers to the balance, or equilibrium, within the cell or a body, and an organism’s ability to keep a constant internal environment?

asked Jan 8 in Science

1 answer 38 views

What process provides more than 99% of energy?

asked Jan 7 in Science

1 answer 38 views

Modern plants reflect what kind of changes that have occurred over many, many years?

asked Dec 31, 2024 in Science

1 answer 28 views

Materials such as metals have low resistance to electric current, what are they called?

answered Dec 31, 2024 in Science

1 answer 24 views

Due to similar function, the wings of bats and birds are referred to as what type of structures?

answered Dec 30, 2024 in Science

1 answer 19 views

Burning forests, growing rice and raising livestock all cause a release of what into the atmosphere?

answered Dec 30, 2024 in Science

1 answer 38 views

Mating with no strong pair-bonds is called?

answered Dec 27, 2024 in Science

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