Search found 7 matches

by Orcio_Dojek
Sat Jul 03, 2021 8:47 am
Forum: Chemistry forum
Topic: Enthalpy of reaction using one equation and its enthalpy
Replies: 4
Views: 4372

Re: Enthalpy of reaction using one equation and its enthalpy

How much heat is produced when 100 mL of 0.250 M HCl (density, 1.00 g/mL) and 200 mL of 0.150 M NaOH (density, 1.00 g/mL) are mixed? HCl(aq) + NaOH(aq) → NaCl(aq) + H₂O(l) ∆H°₂₅°c = −58 kJ If both solutions are at the same temperature and the heat capacity of the products is 4.19 J/g℃, how much wil...
by Orcio_Dojek
Thu Jul 01, 2021 9:47 am
Forum: Chemistry forum
Topic: Thermochemistry questions(1)
Replies: 5
Views: 3776

Re: Thermochemistry questions(1)

True, but calorimeter constant is unknown.
by Orcio_Dojek
Sat Jun 26, 2021 12:38 am
Forum: Chemistry forum
Topic: Unit Conversion mol/kg to mmol/g
Replies: 14
Views: 7899

Re: Unit Conversion mol/kg to mmol/g

@cheme209

3,7 mmol / l = 0,0037 mmol / g = 0,163 mg / g
by Orcio_Dojek
Fri Jun 25, 2021 2:30 pm
Forum: Chemistry forum
Topic: Unit Conversion mol/kg to mmol/g
Replies: 14
Views: 7899

Re: Unit Conversion mol/kg to mmol/g

3.7 mmol/L is very diluted solution, so gravity is not distinct from 1 g / ml.
by Orcio_Dojek
Thu Jun 24, 2021 6:52 am
Forum: Chemistry forum
Topic: Equations
Replies: 2
Views: 2098

Re: Equations

Condensation and hydrolysis applies to peptide, glycosydic and ester bonds (H2O is sideproduct).

About addition reaction, it is possible to some proteins:

Hgb + O2 ----> Hgb-O2

or

Hgb + CO ----> Hgb-CO

(Hgb - hemoglobine)
by Orcio_Dojek
Sun Jun 20, 2021 12:31 pm
Forum: Chemistry forum
Topic: O chemistry
Replies: 1
Views: 2394

Re: O chemistry

First arrow from oxygen atom to H atom, and simultaneously arrow from H-Cl bond to Cl atom.

Second arrow from CH2-OH+ bond to O atom.

Third arrow from Cl- to CH2+.
by Orcio_Dojek
Sun Jun 20, 2021 8:33 am
Forum: Chemistry forum
Topic: Organic chemistry question
Replies: 1
Views: 2450

Re: Organic chemistry question

This is SN1 type reaction. Br- leaves molecule, and H2O or CH3CH2OH attaches to carbocation.

Carbocation is planar so there is a mixture of two isomers for every product (H2O or CH3CH2OH addition).