Jump to content

Nigthwishxd

Members

  • Joined

  • Last visited

View Profile Find content

Everything posted by Nigthwishxd

  1. Nigthwishxd

    pH calculation I struggle with

    Nigthwishxd replied to Nigthwishxd's topic in Inorganic Chemistry
    Hey, thanks for looking into this! n(NaOH)= 0,2g/39,99= 0,005 mol Ka =10^-4 End [H3O] =10^-3 Equillibrium after adding base, I have no idea how this should be formulated to solve [HA] in the beginning. OH- + HA --> A- + H2O 10^-4= (10^-3)x(X+0,005)/(X-0,005)
  2. Nigthwishxd

    pH calculation I struggle with

    Nigthwishxd posted a topic in Inorganic Chemistry
    Hi! I have tried to solve this for few days but can't get the right solution. It seems so simple! This makes me wonder if I still miss some basics >-< 0,2g of sodium hydroxide was added to 1,0l of an aqueous solution of the monovalent acid. An addition after, the pH of the solution was 3,00. How many moles of acide were dissolved in the water before addition of sodium hydroxide? The pKa of the acid is 4,00. The addition of sodium does not change colume of the solution (t= 25°C) The correct answer is: 0,066mol

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.