Question

When 16.8 g of white solid X were heated, 4.4 g of acid gas A that turned lime water milky was
driven off together with 1.8 g of a gas B which condensed to a colourless liquid. The solid that
remained, Y, dissolved in water to give an alkaline solution, which with excess barium chloride
solution gave a white precipitate Z. The precipitate effervesced with acid giving off carbon dioxide
Identify A, B and Y and write down the equation for the thermal decomposition of X. ​

Answer 1

Sorry I didn't understand that question