How much cao will be produced by decomposition of 5gm caco3 ?

1.	How much cao will be produced by decomposition of 5gm caco3 ?
Answer» Answer: 2.8g (or 0.05 moles) EXPLANATION: $\\\tt CaCO_{3} \rightleftharpoons CaO + CO_{2}$ Molar MASS of $\\\tt CaCO_{3}$ = {40 +12 + 3(16)}g/mol = 100g/mol Molar mass of CaO = (40 + 16)g/mol = 56g/mol For 1 mole of $\\\tt CaCO_{3}$ 1 mole of CaO will be PRODUCED. Number of moles of $\\\tt CaCO_{3}$ in 5g = $\\\tt \dfrac{5}{100} mol = 0.05mol$ Therfore 0.05 mol of CaO will be produced whose mass will be $\\\tt 0.05 \times 56 g = 2.8g$

Answer»

Answer:

2.8g (or 0.05 moles)

$\\\tt CaCO_{3} \rightleftharpoons CaO + CO_{2}$