I’m pretty sure it has to more than 7 (8 or 9)
A chemical reaction is a spontaneous reaction is determined by the Gibb's energy and enthalpy of the reaction whether it is exothermic or endothermic. The factors that apply here are heat and entropy. Gibb's energy is related to entropy. Answers are D. and E
Ca(OH)2 + HCl → CaCl + H2O is not a correct acid- base neutralization reaction
<em><u>Explanation</u></em>
<em> Acid and base react to form salt and water.</em>
The reaction of Ca(OH)2 + HCl → CaCl2 +H2O is not correct because
- The formula of salt formed is incorrect. It is suppose to be CaCl2 since Ca has a charge of 2+ while cl- has a charge of -1. Therefore to form ionic bond 2 Cl ion are needed.
- The equation is not balanced. there is suppose to be 2 in front of HCl and in front of H2O
Therefore the correct acid -base neutralization reaction is as below
Ca(OH)2 + 2HCl→ CaCl2 + 2H2O
Answer:
The only thing that will not affect the potential is the adition of solid Sn.
Explanation:
The potencial of a cell is linked to the concentration of the substances involved in the reactions by the equation of Nernst. So a change of one of them would change the cell potential.
The Keq for this reaction is:
<em>Sn is not included because it's in solid state. </em>
As can be seen, changing the concentrations of H2 (increasing the pressure), H+ (lowering the pH) or Sn2+ will affect the potential.
The only thing that will not affect it is the adition of solid Sn.