In photosynthesis, plants form glucose (C6H12O6) and oxygen from carbon dioxide and water. Write a balanced equation for photosynthesis and calculate ΔH °rxn, ΔS°rxn, and ΔG°rxn at 25 °C. Is photosynthesis spontaneous?

Calculate for the ΔS given the values of  ΔHo = +119.2 kJ,  ΔGo= +13.4 kJ at 298.5 K of temperature. CO(NH2)2(aq) + H2O(l) ----> CO2(g) + 2 NH3(g)

For a particular chemical reaction, ΔH = 4.3 kJ and ΔS = –19 J/K. Under what temperature condition is the reaction spontaneous?

For each reaction, calculate ΔHrxn°, ΔSrxn°, and ΔGrxn° at 25 °C and state whether or not the reaction is spontaneous. If the reacton is not spontaneous, would a change in temperature make it spontaneous? If so, should the temperature be raised or lowered from 25 °C? 2 CH4(g) → C2H6(g) + H2(g) 2 NH3(g) → N2H4(g) + H2(g)

For each of the following reactions, calculate ΔH∘rxn, ΔS∘rxn, and ΔG∘rxn at 25 ∘C. State whether or not the reaction is spontaneous. If the reaction is not spontaneous, would a change in temperature make it spontaneous? If so, should the temperature be raised or lowered from 25 ∘C?2CH4(g)→C2H6(g)+H2(g), Calculate ΔS∘rxn at 25 ∘C. 2NH3(g)→N2H4(g)+H2(g) Calculate ΔS∘rxn at 25 ∘C. N2(g)+O2(g)→2NO(g) Calculate ΔS∘rxn at 25 ∘C. 2KClO3(s)→2KCl(s)+3O2(g) Calculate ΔS∘rxn at 25 ∘C.

determine whether each reaction is spontaneous under standard conditions. If a reaction is not spontaneous, write the corresponding spontaneous reaction. K2O2 (s) → 2K (s) + O2(g) PbCO3 (s) → PbO (s) + CO2 (g) P4 (s) + 6H2(g) → 4PH3 (g) 2AgCl (s) + H2S (g) → Ag2S (s) + 2HCl (g)

Answer this question without using numbers from the book (or anywhere else!) ΔS for the following reaction is negative. True or false?   2 CO(g) + O2(g) → 2 CO2(g)

For a given reaction, ΔH∘∘= +35.5 kJ/mol and ΔS∘∘= +83.6 J/(K∙∙ mol). In what temperature range is the reaction spontaneous? Assume that ΔH∘∘ and ΔS∘∘ do not vary with temperature.

Calculate the entropy change (in J/K) that occurs when 22.8 g of ice melts at its normal melting point (0° C).  The enthalpy associated with melting ice is 6.02 kJ/mol.  3 sf.