TS EAMCET 18-July-2022 Shift 1 Solved Paper

50%w∕w solution of HCl solution means that 50g of HCl is present in 100g solution.
CaCO3+2‌HCl⟶CaCl2+H2CO3
1 mole of CaCO3 reacts with 2 moles of HCl
100g of CaCO3=1 mole of CaCO3
200g of CaCO3=2 moles of CaCO3
2 moles of CaCO3 will react with 4 moles of HCl
1 mole of HCl=36.5g of HCl
4 moles of HCl=4×36.5g of HCl=146g of HCl
50g of HCl is present in 100g solution.
146g of HCl will be present in 292g solution.