The concentration of propionate ions at equivalent point is 0. 084 M
calculation
write the equation for reaction
HC3H5O2 + KOH → H2O + KC3H5O2
find the moles of KOH used
moles= molarity × volume in liters
volume in liters = 37.48 ml/1000 =0.03718L
molarity = 0.141 M
moles is therefore = 0.141 M x0.03718 = 5.24238 x10^-3 moles
by use of mole ratio between KOH and K3C3H5O2 which is 1:1 the moles of K3C3H5O2 is also = 5.24238 x10^-3 moles
molarity is therefore = number of moles/volume in liters
volume in liters = 25/1000 +37.48/1000=0.06248 L
molarity of propionate ions is therefore = (5.24238 x10^-3) / 0.06248 = 0.084 M
Answer:
pH = 9.2
Explanation:
pH+pOH=14
But pOH= -log[OH]= -log[1.58×10^-5]= 4.8
We can now say
4.8+pH= 14
pH= 14-4.8= 9.2
D) It is transferred to the air via the process of radiation.
I think it’s B because I just know
Answer:
The catalyst speeds up the chemical reaction.
Explanation:
The process in which chemical reaction rate increases by addition of substance is termed as a catalyst. The chemical reaction happens faster when a catalyst is present because it gives an alternative reaction pathway with lower activation energy.
The catalyst usually forms a temporary intermediate that helps in regenerating the original catalyst in the cyclic process. Yeast when added in a mixture work as a catalyst and helps with chemical reaction.
