Chemistry Answers

Describe if the following reaction is spontaneous or non-spontaneous based on enthalpy, entropy and Gibbs energy:

H = 8457J/mol,

S = 546J/K*mol, and

G = 432J at room temperature

Describe if the following reaction is spontaneous or non-spontaneous based on enthalpy, entropy and Gibbs energy:

H = 345J/mol

S = -6345J/K*mol and

G = 2355J at room temperature

Solve the following thermochemical reactions:

2 HCl + Pb

PbCl₂ + H₂

H = -1861 J/mole

What is the enthalpy if there was 3.86g of PbCl₂?

Calculate the reaction entropy (S°rxn) for the following reaction: NaCl + AgNO₃ >

AgCl + NaNO₃

Calculate the reaction entropy (S°rxn) for the following reaction: Si + 2 Cl₂ > SiCI₄

there are some salt available in a chemistry lab some of them are insoluble or less soluble in water among those salt is PB hole toys what is the concentration of PV hole toys in gram per litre dissolve in water if the KSP for this compound is 4.1 into 10 to the power minus 15 show the step-by-step solution + process

Using the standard reduction potentials, calculate the standard emf for each of the following

reactions: a. 2Al 3+ + 3Cd ⟶ 2Al + 3Cd 2+

b. Cr + 2Cr 3+⟶3Cr 2+

c. H2 + I2⟶ 2H + + 2I

One international nautical mile is defined as exactly 6076.1155ft and a speed of 1 knot is defined as one international nautical mile per hour. What is the speed in meters per second of a boat traveling at a speed of 14 knots?

Decomposition of mercuric oxide HgO to mercury Hg and Oxygen O2 gas, requires 87.1 Kj of heat

Rock salt is a mixture of salt (sodium chloride) and sand. Describe how you would separate rock salt to obtain salt crystals and pure dry sand.