The decomposition of magnesium carbonate is shown MgCO3(s) → MgO(s) + CO2(g) ΔHo = 101 kJ∙mol–1 and ΔSo = 175 J∙K–1∙mol–1 What condition will decrease the value of ΔG (become more negative)? I. Increase the temperature II. Increase the concentration of CO2(g)
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What is the pH of a 0.031 M solution of aqueous Sr(OH)2?
What is the pH of a 0.031 M solution of aqueous Sr(OH)2?
The figures represent the change in concentration of A over…
The figures represent the change in concentration of A over time for the reaction aA Products. Based on the half-life represented here, what is the order of the reaction?
What is the conjugate acid for the base in the reaction belo…
What is the conjugate acid for the base in the reaction below as written? H2PO4–(aq) + H2SO4(aq) H3PO4(aq) + HSO4–(aq)
AgBr has very low solubility in water. Silver ions form a co…
AgBr has very low solubility in water. Silver ions form a complex ion with thiosulfate. Ag+(aq) + 2S2O32–(aq) ⇌ [Ag(S2O3)2]3–(aq) If sodium thiosulfate is added to a saturated solution of AgBr in equilibrium with solid AgBr, how will the concentrations of free Ag+(aq) and Br–(aq) change?
Which particle, if lost from the nucleus, will not change th…
Which particle, if lost from the nucleus, will not change the element (no change to atomic number)?
Consider the reaction at 298 K. …
Consider the reaction at 298 K. Sn2+(aq) + 2Fe3+(aq) → Sn4+(aq) + 2Fe2+(aq) E° = 0.617 V What is the value of E when [Sn2+] and [Fe3+] are equal to 0.50 M and [Sn4+] and [Fe2+] are equal to 0.10 M?
Which salt produces a basic solution when dissolved in water…
Which salt produces a basic solution when dissolved in water?
How many electrons are transferred in the process below when…
How many electrons are transferred in the process below when balanced in basic solution? ClO4–(aq) + Fe(s) → ClO3–(aq) + Fe3+(aq) unbalanced
What is the standard electrode potential for a galvanic cell…
What is the standard electrode potential for a galvanic cell constructed in the appropriate way from these two half-cells? Standard Reduction Potentials Cr3+(aq) + 3e– → Cr(s) E°red = –0.74 V Co2+(aq) + 2e– → Co(s) E°red = –0.28 V