The pH of the solution : 12
<h3>Further explanation</h3>
Reaction
HCOOH + NaOH ⇒ HCOONa + H₂O
mol HCOOH =

mol NaOH =

Mol NaOH>mol HCOOH ⇒ at the end of the reaction there will be a strong base remains from mol NaOH, so that the pH is determined from [OH⁻]
ICE method :
HCOOH + NaOH ⇒ HCOONa + H₂O
4 5
4 4 4 4
0 1 1 1
Concentration of [OH⁻] from NaOH :

pOH=-log[OH⁻]
pOH=-log 10⁻²=2
pH+pOH=14
pH=14-2=12
Answer:
<h3>Na2O + H2O → 2NaOH</h3>
<h3>explanation:</h3>
Sodium oxide react with water to produce sodium hydroxide.
i tried my hardest and its not aExplanation:
Answer:
A. Hydrogen gas combining with oxygen gas to form water.
Explanation:
H2 is the symbol for Hydrogen in gaseous state and O2 is the symbol for Oxygen in gaseous state. H2O is the chemical formula of Water. It is clearly indicated in the equation that Hydrogen and Oxygen combining to form Water.
The arrow to the water indicate that the water is the product and it is NOT the decomposition reaction.
Answer: Look up a video, and they will tell/show you.