19 An excess of calcium carbonate is added to dilute hydrochloric acid, X. The carbon dioxide gas given off is collected and its volume recorded at regular time intervals.
Line X on the graph shows the results obtained.
The experiment is repeated using dilute hydrochloric acid, Y.
Line Y on the graph shows the results obtained.

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

What happens when the temperature of a solution increases?

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign