It is known that  (Pb2+/Pb) = -0.126 2V, Ka (HAc)=1.76×10-5, there is a primary battery: (-) Pb│Pb2+(1mol·L-1)‖H+(1mol·L-1)│H2(1 00kPa),Pt (+)
Question: (1) In the standard state, can the 2H+ + Pb = H2 + Pb2+ reaction occur? (2) If NaAc is added to the H+ solution and the concentration of HAc and Ac- are both 1mol·L-1 after equilibrium, The partial pressure of H2 is 100kPa, does the reaction direction change?

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

hcl + naoh → h2o + nacl

explanation:

hcl + naoh → h2o + nacl   is the reaction that is correctly balanced.

however, pcl3 + h2 → ph3 +3hcl, 2ca+ 3cl2 → cacl3, and c5h12 + 5o2 → 5co2 + 6h2o are not correctly balanced.