fe+ hcl=?. cu+h3po4=?, ba+hno3=?, k+h2so4=?

Question

fe+ hcl=?. cu+h3po4=?, ba+hno3=?, k+h2so4=?

Answer 1

1.fe + 2hcl = fe cl2+h2

2.cu +2h3po4= 2cu3(po4)2+3h2

3.ba+2hno3=ba(no3)2+h2

4.2k+h2so4=k2so4+h2