The fixture with the La Liga side will follow the ticketed Anfield game against Sevilla earlier the same day, though will not be open to supporters.
Kick-off against Las Palmas will be 5pm BST and the match will be shown live on LFCTV GO.
The clubs have met on just one occasion previously; Liverpool travelled to Estadio Insular to contest a testimonial in May 1968, with Chris Lawler scoring in a 1-1 draw.
The successive friendlies on August 11 will be the final warm-ups for Arne Slot’s squad before their Premier League campaign begins at Ipswich Town on August 17.
